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Spring Boot - How does auto-configuration work?

[Last Updated: Nov 9, 2026]

In this tutorial, we will look at the logic behind Spring Boot auto-configuration.

Previously, we saw the usage of @EnableAutoConfiguration and how the @SpringBootApplication annotation works as a shortcut for three annotations: @SpringBootConfiguration (a special kind of @Configuration), @EnableAutoConfiguration and @ComponentScan.


@EnableAutoConfiguration plays an important role in the auto-configuration logic. Let's look at its definition (shortened):

Definition of EnableAutoConfiguration

Version: 4.1.2
 package org.springframework.boot.autoconfigure;
 @Target(ElementType.TYPE)
 @Retention(RetentionPolicy.RUNTIME)
 @Documented
 @Inherited
 @AutoConfigurationPackage
 @Import(AutoConfigurationImportSelector.class)
 public @interface EnableAutoConfiguration {
     Class<?>[] exclude() default {}; 1
     String[] excludeName() default {}; 2
 }
1Exclude specific auto-configuration classes such that they will never be applied.
2Exclude specific auto-configuration class names such that they will never be applied. (Since 1.3.0)

Setting the property spring.boot.enableautoconfiguration=false turns auto-configuration off completely.

Version history: In Spring Boot 1.4 and older, this annotation imported a class named EnableAutoConfigurationImportSelector. It was replaced by AutoConfigurationImportSelector in Spring Boot 1.5 (the old class was deprecated) and removed in Spring Boot 2.0.


There are two meta-annotations that we need to understand: @AutoConfigurationPackage and @Import(AutoConfigurationImportSelector.class).


  • @AutoConfigurationPackage: records the package of your main class (the base package of your application) so Spring Boot can use it later
  • @Import(AutoConfigurationImportSelector.class): loads the list of auto-configuration classes from the .imports files and imports the ones whose conditions match, after your own configuration has been processed.

@AutoConfigurationPackage

Definition of AutoConfigurationPackage

Version: 4.1.2
 package org.springframework.boot.autoconfigure;
 @Target(ElementType.TYPE)
 @Retention(RetentionPolicy.RUNTIME)
 @Documented
 @Inherited
 @Import(AutoConfigurationPackages.Registrar.class)
 public @interface AutoConfigurationPackage {
     String[] basePackages() default {}; 1
     Class<?>[] basePackageClasses() default {}; 2
 }
1Base packages that should be registered with AutoConfigurationPackages. (Since 2.3.0)
2Type-safe alternative to #basePackages for specifying the packages to be registered with AutoConfigurationPackages. (Since 2.3.0)

This annotation uses another @Import, with the value AutoConfigurationPackages.Registrar.class.

AutoConfigurationPackages.Registrar implements ImportBeanDefinitionRegistrar.

By default, the "auto-configuration package" is the package of the class that has @EnableAutoConfiguration (or @SpringBootApplication). You can change it with the basePackages or basePackageClasses attributes (available since Spring Boot 2.3).

As covered in the Spring core tutorials, the @Import annotation can accept the following types of classes:


AutoConfigurationPackages.Registrar registers a bean that stores the list of base packages of our application. Spring Boot uses this list later. For example, the Spring Data auto-configuration classes in spring-boot-autoconfigure use it to find our entity and repository classes. We can read this list with the static method AutoConfigurationPackages.get(BeanFactory): 

package com.logicbig.example;

import org.springframework.boot.Banner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.AutoConfigurationPackages;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.context.ConfigurableApplicationContext;

import java.util.List;

@EnableAutoConfiguration
public class AutoConfigurationPackagesTest {

    public static void main (String[] args) {

        List<String> packages = AutoConfigurationPackages.get(
                new SpringApplicationBuilder(AutoConfigurationPackagesTest.class)
                        .bannerMode(Banner.Mode.OFF)
                        .logStartupInfo(false)
                        .run(args));
        System.out.println("packages: " + packages);
    }
}

Output

packages: [com.logicbig.example]

@Import(AutoConfigurationImportSelector.class)

This annotation starts the auto-configuration process.

AutoConfigurationImportSelector implements DeferredImportSelector. This means it runs after all of our own @Configuration classes have been processed. That is why our own beans can replace the auto-configured ones.


The selector reads the names of the auto-configuration classes from files named META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports. Any jar on the classpath can contain such a file. Each line of the file has one fully qualified class name. Spring Boot's own list is in the spring-boot-autoconfigure jar. Since Spring Boot 4, the new technology-specific modules (see below) also contain their own file.

After reading the names, the selector removes the excluded classes and drops the classes whose simple conditions (such as @ConditionalOnClass) are not met. The remaining classes are imported as normal configuration classes.

The spring-boot-autoconfigure jar comes with spring-boot-starter, so every Spring Boot application has it.

Version history:

  • Spring Boot 1.x to 2.6: the class names were listed in META-INF/spring.factories, under the key org.springframework.boot.autoconfigure.EnableAutoConfiguration. They were loaded with Spring's SpringFactoriesLoader.
  • Spring Boot 2.7: the new .imports file and the @AutoConfiguration annotation were added. The spring.factories way was deprecated but still worked.
  • Spring Boot 3.0 and later: auto-configuration classes listed in spring.factories are no longer used. Only the .imports file works. (spring.factories still exists for other Spring Boot features, just not for this one.)
  • Spring Boot 4.0: the big spring-boot-autoconfigure jar was split into smaller modules, one for each technology. Many auto-configuration classes moved to new packages (usually org.springframework.boot.<technology>.autoconfigure). If you exclude a class by name, check its current package in the Javadoc. Also, having a library on the classpath is sometimes not enough anymore. You may need the matching Spring Boot module or starter too. For a quick migration, Spring Boot offers "classic starters" (spring-boot-starter-classic), which bundle all the auto-configuration modules. See our modular auto-configuration tutorial for details.

Auto-Configuration Example: JmxAutoConfiguration

Let's look at one auto-configuration class.
Following is a snippet from JmxAutoConfiguration (current version): 

package org.springframework.boot.autoconfigure.jmx;

import ...;

@AutoConfiguration
@EnableConfigurationProperties(JmxProperties.class)
@ConditionalOnClass(MBeanExporter.class)
@ConditionalOnBooleanProperty("spring.jmx.enabled")
public final class JmxAutoConfiguration {
    .....
}

Let's see step by step how the above class is set up for auto-configuration.

What is @AutoConfiguration?

@AutoConfiguration marks a class as an auto-configuration class. It is a special @Configuration that also lets us set the order with before and after attributes. In older versions, auto-configuration classes used plain @Configuration.

Definition of AutoConfiguration

Version: 4.1.2
 package org.springframework.boot.autoconfigure;
 @Target(ElementType.TYPE)
 @Retention(RetentionPolicy.RUNTIME)
 @Documented
 @Configuration(proxyBeanMethods = false)
 @AutoConfigureBefore
 @AutoConfigureAfter
 public @interface AutoConfiguration {
     @AliasFor(annotation = Configuration.class)
     String value() default ""; 1
     @AliasFor(annotation = AutoConfigureBefore.class, attribute = "value")
     Class<?>[] before() default {}; 2
     @AliasFor(annotation = AutoConfigureBefore.class, attribute = "name")
     String[] beforeName() default {}; 3
     @AliasFor(annotation = AutoConfigureAfter.class, attribute = "value")
     Class<?>[] after() default {}; 4
     @AliasFor(annotation = AutoConfigureAfter.class, attribute = "name")
     String[] afterName() default {}; 5
 }
1Explicitly specify the name of the Spring bean definition associated with the @AutoConfiguration class.
2The auto-configuration classes that should have not yet been applied.
3The names of the auto-configuration classes that should have not yet been applied.
4The auto-configuration classes that should have already been applied.
5The names of the auto-configuration classes that should have already been applied.

Ordering auto-configurations with before and after

@AutoConfiguration has two attributes, before and after. They set the order in which auto-configuration classes are processed. This order matters because conditions such as @ConditionalOnBean can only see the beans that are already registered. If your class is processed too early, the condition fails silently and its beans are skipped. JmxAutoConfiguration does not need these attributes, because it checks only a class and a property, not beans from other auto-configurations.

In the following example, we create a bean only if a DataSource bean exists:

@AutoConfiguration(after = DataSourceAutoConfiguration.class)
public class AuditAutoConfiguration {

    @Bean
    @ConditionalOnBean(DataSource.class)
    public AuditService auditService(DataSource dataSource) {
        return new AuditService(dataSource);
    }
}
  • With after = DataSourceAutoConfiguration.class: the data source is registered first, so the condition is true (at line 5) and auditService is created.
  • Without it: the order is not guaranteed. If our class is processed first, the condition at line 5 is false and auditService will not be registered as a bean.

Some more points:

  • Use afterName or beforeName with a class name string if the other class may not be on the classpath.
  • The ordering only applies between auto-configuration classes. Our own @Configuration classes are always processed first.
  • It controls when bean definitions are registered, not the order of bean creation. Use normal dependencies or @DependsOn for that.
  • Do not create a cycle. If class A is after class B, and class B is after class A, Spring Boot cannot decide the order, and the application fails to start.

Version history: Before Spring Boot 2.7, the same ordering was set with the separate annotations @AutoConfigureBefore and @AutoConfigureAfter. Since 2.7, @AutoConfiguration has before and after attributes built in.


What is @ConditionalOnClass?

Let's continue with the JmxAutoConfiguration example above. Now we will look at the purpose of @ConditionalOnClass.

Definition of ConditionalOnClass

Version: 4.1.2
 package org.springframework.boot.autoconfigure.condition;
 @Target({ ElementType.TYPE, ElementType.METHOD })
 @Retention(RetentionPolicy.RUNTIME)
 @Documented
 @Conditional(OnClassCondition.class)
 public @interface ConditionalOnClass {
     Class<?>[] value() default {}; 1
     String[] name() default {}; 2
 }
1The classes that must be present.
2The classes names that must be present.

@ConditionalOnClass is itself annotated with @Conditional(OnClassCondition.class). OnClassCondition is a package-private Spring Boot class that checks whether specific classes are present or absent. As we know, a configuration class or a @Bean method annotated with @Conditional is registered with the bean factory only if Condition#matches() returns true (check out our @Conditional tutorial).

OnClassCondition#matches() returns true if the specified class (MBeanExporter.class in the above example) is on the classpath. Spring checks this by trying to load the class by its name (like Class.forName()). If loading fails, Spring assumes that the class is not on the classpath.

Spring reads the annotation directly from the class file bytecode (using a library called ASM). There, MBeanExporter.class is stored only as a class name string. That is the reason a missing class in @ConditionalOnClass(MBeanExporter.class), does not cause a NoClassDefFoundError:


An auto-configuration class (such as JmxAutoConfiguration above) usually has many methods annotated with @Bean. Generally, these beans are created only if a specific class is on the classpath. So, for an auto-configuration to work, we must add the related starter dependency. Then the target class can be found on the classpath.


What is @ConditionalOnProperty?

Let's continue with the JmxAutoConfiguration example above. Now we will look at the purpose of @ConditionalOnProperty.

Definition of ConditionalOnProperty

Version: 4.1.2
 package org.springframework.boot.autoconfigure.condition;
 @Retention(RetentionPolicy.RUNTIME)
 @Target({ ElementType.TYPE, ElementType.METHOD })
 @Documented
 @Conditional(OnPropertyCondition.class)
 @Repeatable(ConditionalOnProperties.class)
 public @interface ConditionalOnProperty {
     String[] value() default {}; 1
     String prefix() default ""; 2
     String[] name() default {}; 3
     String havingValue() default ""; 4
     boolean matchIfMissing() default false; 5
 }
1Alias for #name().
2A prefix that should be applied to each property.
3The name of the properties to test.
4The string representation of the expected value for the properties.
5Specify if the condition should match if the property is not set.

The annotation @ConditionalOnProperty is another @Conditional variant. It is annotated with @Conditional(OnPropertyCondition.class).

OnPropertyCondition#matches() returns true if the application has set the target property to the expected value.

In our example, @ConditionalOnBooleanProperty("spring.jmx.enabled") is true only if the property spring.jmx.enabled is set to true. If the property is missing or set to false, the condition is false. We can set the property in any place that Spring Boot reads properties from, for example application.properties (spring.jmx.enabled=true), application.yml, a command-line argument (--spring.jmx.enabled=true), a system property (-Dspring.jmx.enabled=true) or an environment variable (SPRING_JMX_ENABLED=true).


Older versions of JmxAutoConfiguration used this condition like this: 

@ConditionalOnProperty(prefix = "spring.jmx", name = "enabled",
                         havingValue = "true", matchIfMissing = true)

Here is what each attribute means:

  • prefix and name together give the full property name: spring.jmx.enabled.
  • havingValue = "true" means the condition is true only if the property value is true.
  • matchIfMissing = true means the condition is also true if the property is not set at all. Without it, a missing property makes the condition false.

For a class like this to be included in the application configuration, both @ConditionalOnClass and @ConditionalOnProperty must be true.

Version history:

  • Up to Spring Boot 2.1, JMX support was on by default (matchIfMissing = true). Since Spring Boot 2.2, it is off by default. We must set spring.jmx.enabled=true to turn it on.
  • Since Spring Boot 3.5, there is a shorter annotation for true/false properties: @ConditionalOnBooleanProperty("spring.jmx.enabled"). By default, it is true only if the property is set to true. A missing property gives false.

Other conditional annotations

Other similar conditional annotations are in the package org.springframework.boot.autoconfigure.condition. All of them follow the ConditionalOnXyz naming style. Some commonly used ones are @ConditionalOnMissingClass, @ConditionalOnBean, @ConditionalOnMissingBean, @ConditionalOnWebApplication and @ConditionalOnResource.

@ConditionalOnMissingBean is very important. It lets an auto-configuration "back off". If we define our own bean of the same type, the auto-configured bean is not created. This works because auto-configuration classes are processed after our own configuration classes (remember DeferredImportSelector).

If you plan to create your own starter, you should explore this API in more detail. Other developers only need to know the high-level mechanism.


Using --debug

To see which auto-configurations are applied to our application, we start the application in debug mode. We can use the program argument --debug, the JVM option -Ddebug, or the property debug=true in application.properties. Spring Boot then prints the conditions evaluation report.

Debug mode does not set all loggers to DEBUG level. Only a selected set of core loggers (for example, Spring Boot's own and the embedded server's) are set to DEBUG.

Let's see an example. We include the spring-boot-starter dependency in this example. JMX is off by default, so we also pass --spring.jmx.enabled=true. This lets us see JmxAutoConfiguration being applied. (We pass the arguments in code only for this demo.) 

package com.logicbig.example;

import org.springframework.boot.Banner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.context.ConfigurableApplicationContext;

@EnableAutoConfiguration
public class DebugModeExample {

    public static void main (String[] args) {
        new SpringApplicationBuilder(DebugModeExample.class)
                .bannerMode(Banner.Mode.OFF)
                .logStartupInfo(false)
                .run("--debug", "--spring.jmx.enabled=true");
    }
}

Output

2026-11-06 22:25:42.074 DEBUG 2540 --- [           main] .c.l.ClasspathLoggingApplicationListener : Application started with classpath: [file:/D:/LogicBig/example-projects/spring-boot/boot-customizing-autoconfig/target/classes/, file:/C:/Users/Joe/.m2/repository/org/springframework/boot/spring-boot-starter/2.0.0.RELEASE/spring-boot-starter-2.0.0.RELEASE.jar, file:/C:/Users/Joe/.m2/repository/org/springframework/boot/spring-boot/2.0.0.RELEASE/spring-boot-2.0.0.RELEASE.jar, file:/C:/Users/Joe/.m2/repository/org/springframework/spring-context/5.0.4.RELEASE/spring-context-5.0.4.RELEASE.jar, file:/C:/Users/Joe/.m2/repository/org/springframework/spring-aop/5.0.4.RELEASE/spring-aop-5.0.4.RELEASE.jar, file:/C:/Users/Joe/.m2/repository/org/springframework/spring-beans/5.0.4.RELEASE/spring-beans-5.0.4.RELEASE.jar, file:/C:/Users/Joe/.m2/repository/org/springframework/spring-expression/5.0.4.RELEASE/spring-expression-5.0.4.RELEASE.jar, file:/C:/Users/Joe/.m2/repository/org/springframework/boot/spring-boot-autoconfigure/2.0.0.RELEASE/spring-boot-autoconfigure-2.0.0.RELEASE.jar, file:/C:/Users/Joe/.m2/repository/org/springframework/boot/spring-boot-starter-logging/2.0.0.RELEASE/spring-boot-starter-logging-2.0.0.RELEASE.jar, file:/C:/Users/Joe/.m2/repository/ch/qos/logback/logback-classic/1.2.3/logback-classic-1.2.3.jar, file:/C:/Users/Joe/.m2/repository/ch/qos/logback/logback-core/1.2.3/logback-core-1.2.3.jar, file:/C:/Users/Joe/.m2/repository/org/slf4j/slf4j-api/1.7.25/slf4j-api-1.7.25.jar, file:/C:/Users/Joe/.m2/repository/org/apache/logging/log4j/log4j-to-slf4j/2.10.0/log4j-to-slf4j-2.10.0.jar, file:/C:/Users/Joe/.m2/repository/org/apache/logging/log4j/log4j-api/2.10.0/log4j-api-2.10.0.jar, file:/C:/Users/Joe/.m2/repository/org/slf4j/jul-to-slf4j/1.7.25/jul-to-slf4j-1.7.25.jar, file:/C:/Users/Joe/.m2/repository/javax/annotation/javax.annotation-api/1.3.2/javax.annotation-api-1.3.2.jar, file:/C:/Users/Joe/.m2/repository/org/springframework/spring-core/5.0.4.RELEASE/spring-core-5.0.4.RELEASE.jar, file:/C:/Users/Joe/.m2/repository/org/springframework/spring-jcl/5.0.4.RELEASE/spring-jcl-5.0.4.RELEASE.jar, file:/C:/Users/Joe/.m2/repository/org/yaml/snakeyaml/1.19/snakeyaml-1.19.jar]
2026-11-06 22:25:42.170 DEBUG 2540 --- [           main] o.s.boot.SpringApplication               : Loading source class com.logicbig.example.DebugModeExample
2026-11-06 22:25:43.298 DEBUG 2540 --- [           main] ConditionEvaluationReportLoggingListener : 


============================
CONDITIONS EVALUATION REPORT
============================


Positive matches:
-----------------

   GenericCacheConfiguration matched:
      - Cache org.springframework.boot.autoconfigure.cache.GenericCacheConfiguration automatic cache type (CacheCondition)

   JmxAutoConfiguration matched:
      - @ConditionalOnClass found required class 'org.springframework.jmx.export.MBeanExporter'; @ConditionalOnMissingClass did not find unwanted class (OnClassCondition)
      - @ConditionalOnProperty (spring.jmx.enabled=true) matched (OnPropertyCondition)

   JmxAutoConfiguration#mbeanExporter matched:
      - @ConditionalOnMissingBean (types: org.springframework.jmx.export.MBeanExporter; SearchStrategy: current) did not find any beans (OnBeanCondition)

   JmxAutoConfiguration#mbeanServer matched:
      - @ConditionalOnMissingBean (types: javax.management.MBeanServer; SearchStrategy: all) did not find any beans (OnBeanCondition)

   JmxAutoConfiguration#objectNamingStrategy matched:
      - @ConditionalOnMissingBean (types: org.springframework.jmx.export.naming.ObjectNamingStrategy; SearchStrategy: current) did not find any beans (OnBeanCondition)

   NoOpCacheConfiguration matched:
      - Cache org.springframework.boot.autoconfigure.cache.NoOpCacheConfiguration automatic cache type (CacheCondition)

   PropertyPlaceholderAutoConfiguration#propertySourcesPlaceholderConfigurer matched:
      - @ConditionalOnMissingBean (types: org.springframework.context.support.PropertySourcesPlaceholderConfigurer; SearchStrategy: current) did not find any beans (OnBeanCondition)

   RedisCacheConfiguration matched:
      - Cache org.springframework.boot.autoconfigure.cache.RedisCacheConfiguration automatic cache type (CacheCondition)

   SimpleCacheConfiguration matched:
      - Cache org.springframework.boot.autoconfigure.cache.SimpleCacheConfiguration automatic cache type (CacheCondition)


Negative matches:
-----------------

   ActiveMQAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'javax.jms.ConnectionFactory', 'org.apache.activemq.ActiveMQConnectionFactory' (OnClassCondition)

   AopAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.aspectj.lang.annotation.Aspect', 'org.aspectj.lang.reflect.Advice', 'org.aspectj.weaver.AnnotatedElement' (OnClassCondition)

   ArtemisAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'javax.jms.ConnectionFactory', 'org.apache.activemq.artemis.jms.client.ActiveMQConnectionFactory' (OnClassCondition)

   BatchAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.batch.core.launch.JobLauncher', 'org.springframework.jdbc.core.JdbcOperations' (OnClassCondition)

   CacheAutoConfiguration:
      Did not match:
         - @ConditionalOnBean (types: org.springframework.cache.interceptor.CacheAspectSupport; SearchStrategy: all) did not find any beans of type org.springframework.cache.interceptor.CacheAspectSupport (OnBeanCondition)
      Matched:
         - @ConditionalOnClass found required class 'org.springframework.cache.CacheManager'; @ConditionalOnMissingClass did not find unwanted class (OnClassCondition)

   CacheAutoConfiguration.CacheManagerJpaDependencyConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean' (OnClassCondition)
         - Ancestor org.springframework.boot.autoconfigure.cache.CacheAutoConfiguration did not match (ConditionEvaluationReport.AncestorsMatchedCondition)

   CaffeineCacheConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.github.benmanes.caffeine.cache.Caffeine', 'org.springframework.cache.caffeine.CaffeineCacheManager' (OnClassCondition)

   CassandraAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.datastax.driver.core.Cluster' (OnClassCondition)

   CassandraDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.datastax.driver.core.Cluster', 'org.springframework.data.cassandra.core.CassandraAdminOperations' (OnClassCondition)

   CassandraReactiveDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.datastax.driver.core.Cluster', 'org.springframework.data.cassandra.core.ReactiveCassandraTemplate', 'reactor.core.publisher.Flux' (OnClassCondition)

   CassandraReactiveRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.data.cassandra.ReactiveSession', 'org.springframework.data.cassandra.repository.ReactiveCassandraRepository' (OnClassCondition)

   CassandraRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.datastax.driver.core.Session', 'org.springframework.data.cassandra.repository.CassandraRepository' (OnClassCondition)

   CloudAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.cloud.config.java.CloudScanConfiguration' (OnClassCondition)

   CodecsAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.http.codec.CodecConfigurer' (OnClassCondition)

   CouchbaseAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.couchbase.client.java.CouchbaseBucket', 'com.couchbase.client.java.Cluster' (OnClassCondition)

   CouchbaseCacheConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.couchbase.client.java.Bucket', 'com.couchbase.client.spring.cache.CouchbaseCacheManager' (OnClassCondition)

   CouchbaseDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.couchbase.client.java.Bucket', 'org.springframework.data.couchbase.repository.CouchbaseRepository' (OnClassCondition)

   CouchbaseReactiveDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.couchbase.client.java.Bucket', 'org.springframework.data.couchbase.repository.ReactiveCouchbaseRepository', 'reactor.core.publisher.Flux' (OnClassCondition)

   CouchbaseReactiveRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.couchbase.client.java.Bucket', 'org.springframework.data.couchbase.repository.ReactiveCouchbaseRepository', 'reactor.core.publisher.Flux' (OnClassCondition)

   CouchbaseRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.couchbase.client.java.Bucket', 'org.springframework.data.couchbase.repository.CouchbaseRepository' (OnClassCondition)

   DataSourceAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType' (OnClassCondition)

   DataSourceTransactionManagerAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.jdbc.core.JdbcTemplate', 'org.springframework.transaction.PlatformTransactionManager' (OnClassCondition)

   DispatcherServletAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.web.servlet.DispatcherServlet' (OnClassCondition)

   EhCacheCacheConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'net.sf.ehcache.Cache', 'org.springframework.cache.ehcache.EhCacheCacheManager' (OnClassCondition)

   ElasticsearchAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.elasticsearch.client.Client', 'org.springframework.data.elasticsearch.client.TransportClientFactoryBean' (OnClassCondition)

   ElasticsearchDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.elasticsearch.client.Client', 'org.springframework.data.elasticsearch.core.ElasticsearchTemplate' (OnClassCondition)

   ElasticsearchRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.elasticsearch.client.Client', 'org.springframework.data.elasticsearch.repository.ElasticsearchRepository' (OnClassCondition)

   EmbeddedLdapAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.unboundid.ldap.listener.InMemoryDirectoryServer' (OnClassCondition)

   EmbeddedMongoAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.mongodb.MongoClient', 'de.flapdoodle.embed.mongo.MongodStarter' (OnClassCondition)

   EmbeddedWebServerFactoryCustomizerAutoConfiguration.JettyWebServerFactoryCustomizerConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.eclipse.jetty.server.Server', 'org.eclipse.jetty.util.Loader', 'org.eclipse.jetty.webapp.WebAppContext' (OnClassCondition)

   EmbeddedWebServerFactoryCustomizerAutoConfiguration.TomcatWebServerFactoryCustomizerConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.apache.catalina.startup.Tomcat', 'org.apache.coyote.UpgradeProtocol' (OnClassCondition)

   EmbeddedWebServerFactoryCustomizerAutoConfiguration.UndertowWebServerFactoryCustomizerConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'io.undertow.Undertow', 'org.xnio.SslClientAuthMode' (OnClassCondition)

   ErrorMvcAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'javax.servlet.Servlet', 'org.springframework.web.servlet.DispatcherServlet' (OnClassCondition)

   ErrorWebFluxAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.web.reactive.config.WebFluxConfigurer' (OnClassCondition)

   FlywayAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.flywaydb.core.Flyway' (OnClassCondition)

   FreeMarkerAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'freemarker.template.Configuration', 'org.springframework.ui.freemarker.FreeMarkerConfigurationFactory' (OnClassCondition)

   GroovyTemplateAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'groovy.text.markup.MarkupTemplateEngine' (OnClassCondition)

   GsonAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.google.gson.Gson' (OnClassCondition)

   H2ConsoleAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.h2.server.web.WebServlet' (OnClassCondition)

   HazelcastAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.hazelcast.core.HazelcastInstance' (OnClassCondition)

   HazelcastCacheConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.hazelcast.core.HazelcastInstance', 'com.hazelcast.spring.cache.HazelcastCacheManager' (OnClassCondition)

   HazelcastJpaDependencyAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.hazelcast.core.HazelcastInstance', 'org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean' (OnClassCondition)

   HibernateJpaAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean', 'javax.persistence.EntityManager' (OnClassCondition)

   HttpEncodingAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.web.filter.CharacterEncodingFilter' (OnClassCondition)

   HttpHandlerAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.web.reactive.DispatcherHandler', 'org.springframework.http.server.reactive.HttpHandler' (OnClassCondition)

   HttpMessageConvertersAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.http.converter.HttpMessageConverter' (OnClassCondition)

   HypermediaAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.hateoas.Resource', 'org.springframework.web.bind.annotation.RequestMapping', 'org.springframework.plugin.core.Plugin' (OnClassCondition)

   InfinispanCacheConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.infinispan.spring.provider.SpringEmbeddedCacheManager' (OnClassCondition)

   InfluxDbAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.influxdb.InfluxDB' (OnClassCondition)

   IntegrationAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.integration.config.EnableIntegration' (OnClassCondition)

   JCacheCacheConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'javax.cache.Caching', 'org.springframework.cache.jcache.JCacheCacheManager' (OnClassCondition)

   JacksonAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.fasterxml.jackson.databind.ObjectMapper' (OnClassCondition)

   JdbcTemplateAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.jdbc.core.JdbcTemplate' (OnClassCondition)

   JerseyAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.glassfish.jersey.server.spring.SpringComponentProvider', 'javax.servlet.ServletRegistration' (OnClassCondition)

   JestAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'io.searchbox.client.JestClient' (OnClassCondition)

   JmsAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'javax.jms.Message', 'org.springframework.jms.core.JmsTemplate' (OnClassCondition)

   JndiConnectionFactoryAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.jms.core.JmsTemplate' (OnClassCondition)

   JndiDataSourceAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType' (OnClassCondition)

   JooqAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.jooq.DSLContext' (OnClassCondition)

   JpaRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.jpa.repository.JpaRepository' (OnClassCondition)

   JsonbAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'javax.json.bind.Jsonb' (OnClassCondition)

   JtaAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'javax.transaction.Transaction' (OnClassCondition)

   KafkaAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.kafka.core.KafkaTemplate' (OnClassCondition)

   LdapAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.ldap.core.ContextSource' (OnClassCondition)

   LdapDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.ldap.repository.LdapRepository' (OnClassCondition)

   LdapRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.ldap.repository.LdapRepository' (OnClassCondition)

   LiquibaseAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'liquibase.integration.spring.SpringLiquibase', 'liquibase.change.DatabaseChange' (OnClassCondition)

   MailSenderAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'javax.mail.internet.MimeMessage' (OnClassCondition)

   MailSenderValidatorAutoConfiguration:
      Did not match:
         - @ConditionalOnProperty (spring.mail.test-connection) did not find property 'test-connection' (OnPropertyCondition)

   MessageSourceAutoConfiguration:
      Did not match:
         - ResourceBundle did not find bundle with basename messages (MessageSourceAutoConfiguration.ResourceBundleCondition)

   MongoAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.mongodb.MongoClient' (OnClassCondition)

   MongoDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.mongodb.MongoClient', 'org.springframework.data.mongodb.core.MongoTemplate' (OnClassCondition)

   MongoReactiveAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.mongodb.reactivestreams.client.MongoClient' (OnClassCondition)

   MongoReactiveDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.mongodb.reactivestreams.client.MongoClient', 'org.springframework.data.mongodb.core.ReactiveMongoTemplate' (OnClassCondition)

   MongoReactiveRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.mongodb.reactivestreams.client.MongoClient', 'org.springframework.data.mongodb.repository.ReactiveMongoRepository' (OnClassCondition)

   MongoRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.mongodb.MongoClient', 'org.springframework.data.mongodb.repository.MongoRepository' (OnClassCondition)

   MultipartAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'javax.servlet.Servlet', 'org.springframework.web.multipart.support.StandardServletMultipartResolver', 'javax.servlet.MultipartConfigElement' (OnClassCondition)

   MustacheAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.samskivert.mustache.Mustache' (OnClassCondition)

   Neo4jDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.neo4j.ogm.session.SessionFactory', 'org.springframework.data.neo4j.transaction.Neo4jTransactionManager', 'org.springframework.transaction.PlatformTransactionManager' (OnClassCondition)

   Neo4jRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.neo4j.ogm.session.Neo4jSession', 'org.springframework.data.neo4j.repository.Neo4jRepository' (OnClassCondition)

   OAuth2ClientAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.security.config.annotation.web.configuration.EnableWebSecurity', 'org.springframework.security.oauth2.client.registration.ClientRegistration' (OnClassCondition)

   PersistenceExceptionTranslationAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor' (OnClassCondition)

   ProjectInfoAutoConfiguration#buildProperties:
      Did not match:
         - @ConditionalOnResource did not find resource '${spring.info.build.location:classpath:META-INF/build-info.properties}' (OnResourceCondition)

   ProjectInfoAutoConfiguration#gitProperties:
      Did not match:
         - GitResource did not find git info at classpath:git.properties (ProjectInfoAutoConfiguration.GitResourceAvailableCondition)

   QuartzAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.quartz.Scheduler', 'org.springframework.scheduling.quartz.SchedulerFactoryBean', 'org.springframework.transaction.PlatformTransactionManager' (OnClassCondition)

   RabbitAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.amqp.rabbit.core.RabbitTemplate', 'com.rabbitmq.client.Channel' (OnClassCondition)

   ReactiveUserDetailsServiceAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.security.authentication.ReactiveAuthenticationManager' (OnClassCondition)

   ReactiveWebServerFactoryAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.http.ReactiveHttpInputMessage' (OnClassCondition)

   ReactorCoreAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'reactor.core.publisher.Mono', 'reactor.core.publisher.Flux' (OnClassCondition)

   RedisAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.redis.core.RedisOperations' (OnClassCondition)

   RedisReactiveAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.data.redis.connection.ReactiveRedisConnectionFactory', 'org.springframework.data.redis.core.ReactiveRedisTemplate', 'reactor.core.publisher.Flux' (OnClassCondition)

   RedisRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.redis.repository.configuration.EnableRedisRepositories' (OnClassCondition)

   RepositoryRestMvcAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.rest.webmvc.config.RepositoryRestMvcConfiguration' (OnClassCondition)

   RestTemplateAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.web.client.RestTemplate' (OnClassCondition)

   SecurityAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.security.authentication.DefaultAuthenticationEventPublisher' (OnClassCondition)

   SecurityFilterAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.security.web.context.AbstractSecurityWebApplicationInitializer', 'org.springframework.security.config.http.SessionCreationPolicy' (OnClassCondition)

   SendGridAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.sendgrid.SendGrid' (OnClassCondition)

   ServletWebServerFactoryAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'javax.servlet.ServletRequest' (OnClassCondition)

   SessionAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.session.Session' (OnClassCondition)

   SolrAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.apache.solr.client.solrj.impl.HttpSolrClient', 'org.apache.solr.client.solrj.impl.CloudSolrClient' (OnClassCondition)

   SolrRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.apache.solr.client.solrj.SolrClient', 'org.springframework.data.solr.repository.SolrRepository' (OnClassCondition)

   SpringApplicationAdminJmxAutoConfiguration:
      Did not match:
         - @ConditionalOnProperty (spring.application.admin.enabled=true) did not find property 'enabled' (OnPropertyCondition)

   SpringDataWebAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.data.web.PageableHandlerMethodArgumentResolver', 'org.springframework.web.servlet.config.annotation.WebMvcConfigurer' (OnClassCondition)

   ThymeleafAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.thymeleaf.templatemode.TemplateMode' (OnClassCondition)

   TransactionAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.transaction.PlatformTransactionManager' (OnClassCondition)

   UserDetailsServiceAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.security.authentication.AuthenticationManager' (OnClassCondition)

   ValidationAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'javax.validation.executable.ExecutableValidator' (OnClassCondition)

   WebClientAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.web.reactive.function.client.WebClient' (OnClassCondition)

   WebFluxAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.web.reactive.config.WebFluxConfigurer' (OnClassCondition)

   WebFluxSecurityConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.security.config.annotation.web.reactive.EnableWebFluxSecurity', 'org.springframework.security.web.server.WebFilterChainProxy' (OnClassCondition)

   WebMvcAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'javax.servlet.Servlet', 'org.springframework.web.servlet.DispatcherServlet', 'org.springframework.web.servlet.config.annotation.WebMvcConfigurer' (OnClassCondition)

   WebServicesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.ws.transport.http.MessageDispatcherServlet' (OnClassCondition)

   WebSocketMessagingAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.web.socket.config.annotation.WebSocketMessageBrokerConfigurer' (OnClassCondition)

   WebSocketReactiveAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'javax.servlet.Servlet', 'javax.websocket.server.ServerContainer' (OnClassCondition)

   WebSocketServletAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'javax.servlet.Servlet', 'javax.websocket.server.ServerContainer' (OnClassCondition)

   XADataSourceAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'javax.transaction.TransactionManager', 'org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType' (OnClassCondition)


Exclusions:
-----------

    None


Unconditional classes:
----------------------

    org.springframework.boot.autoconfigure.security.reactive.ReactiveSecurityAutoConfiguration

    org.springframework.boot.autoconfigure.context.ConfigurationPropertiesAutoConfiguration

    org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration

    org.springframework.boot.autoconfigure.web.embedded.EmbeddedWebServerFactoryCustomizerAutoConfiguration

    org.springframework.boot.autoconfigure.info.ProjectInfoAutoConfiguration

In the above conditions evaluation report:

  • Positive matches: the @Conditional checks were true, so these configuration classes (or @Bean methods) are included.
  • Negative matches: the @Conditional checks were false, so these configuration classes are not included. The report also shows the reason.
  • Exclusions: the auto-configuration classes that we excluded on purpose. We will see how in the next section.
  • Unconditional classes: auto-configuration classes that have no class-level conditions. They are always part of the application's configuration.

To run an application with the debug argument from the build tool:

  • Maven: mvn spring-boot:run -Dspring-boot.run.arguments=--debug
  • Gradle: ./gradlew bootRun --args='--debug'

Another way to see the same report is the Actuator conditions endpoint (/actuator/conditions). It needs the spring-boot-starter-actuator dependency. Web access to the endpoint must also be enabled with management.endpoints.web.exposure.include=conditions.

Version history: In Spring Boot 1.x, the report title was AUTO-CONFIGURATION REPORT. Since Spring Boot 2.0, it is CONDITIONS EVALUATION REPORT. Also, in Spring Boot 1.x the class PropertyPlaceholderAutoConfiguration was in the package org.springframework.boot.autoconfigure. Today it is in org.springframework.boot.autoconfigure.context. The JMS classes also moved from javax.jms to jakarta.jms in Spring Boot 3.0.




Disabling specific auto-configuration

If we don't want some of the auto-configurations in our application, we can use the exclude attribute of @EnableAutoConfiguration to disable them.

Let's disable JmxAutoConfiguration (used in the last example). 

package com.logicbig.example;

import org.springframework.boot.Banner;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.jmx.JmxAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;

@EnableAutoConfiguration(exclude = JmxAutoConfiguration.class)
public class ExcludeConfigExample {

    public static void main(String[] args) {
        new SpringApplicationBuilder(ExcludeConfigExample.class)
                .bannerMode(Banner.Mode.OFF)
                .logStartupInfo(false)
                .run("--debug", "--spring.jmx.enabled=true");
    }
}

Output

2026-11-06 22:29:24.242 DEBUG 10700 --- [           main] .c.l.ClasspathLoggingApplicationListener : Application started with classpath: [file:/D:/LogicBig/example-projects/spring-boot/boot-customizing-autoconfig/target/classes/, file:/C:/Users/Joe/.m2/repository/org/springframework/boot/spring-boot-starter/2.0.0.RELEASE/spring-boot-starter-2.0.0.RELEASE.jar, file:/C:/Users/Joe/.m2/repository/org/springframework/boot/spring-boot/2.0.0.RELEASE/spring-boot-2.0.0.RELEASE.jar, file:/C:/Users/Joe/.m2/repository/org/springframework/spring-context/5.0.4.RELEASE/spring-context-5.0.4.RELEASE.jar, file:/C:/Users/Joe/.m2/repository/org/springframework/spring-aop/5.0.4.RELEASE/spring-aop-5.0.4.RELEASE.jar, file:/C:/Users/Joe/.m2/repository/org/springframework/spring-beans/5.0.4.RELEASE/spring-beans-5.0.4.RELEASE.jar, file:/C:/Users/Joe/.m2/repository/org/springframework/spring-expression/5.0.4.RELEASE/spring-expression-5.0.4.RELEASE.jar, file:/C:/Users/Joe/.m2/repository/org/springframework/boot/spring-boot-autoconfigure/2.0.0.RELEASE/spring-boot-autoconfigure-2.0.0.RELEASE.jar, file:/C:/Users/Joe/.m2/repository/org/springframework/boot/spring-boot-starter-logging/2.0.0.RELEASE/spring-boot-starter-logging-2.0.0.RELEASE.jar, file:/C:/Users/Joe/.m2/repository/ch/qos/logback/logback-classic/1.2.3/logback-classic-1.2.3.jar, file:/C:/Users/Joe/.m2/repository/ch/qos/logback/logback-core/1.2.3/logback-core-1.2.3.jar, file:/C:/Users/Joe/.m2/repository/org/slf4j/slf4j-api/1.7.25/slf4j-api-1.7.25.jar, file:/C:/Users/Joe/.m2/repository/org/apache/logging/log4j/log4j-to-slf4j/2.10.0/log4j-to-slf4j-2.10.0.jar, file:/C:/Users/Joe/.m2/repository/org/apache/logging/log4j/log4j-api/2.10.0/log4j-api-2.10.0.jar, file:/C:/Users/Joe/.m2/repository/org/slf4j/jul-to-slf4j/1.7.25/jul-to-slf4j-1.7.25.jar, file:/C:/Users/Joe/.m2/repository/javax/annotation/javax.annotation-api/1.3.2/javax.annotation-api-1.3.2.jar, file:/C:/Users/Joe/.m2/repository/org/springframework/spring-core/5.0.4.RELEASE/spring-core-5.0.4.RELEASE.jar, file:/C:/Users/Joe/.m2/repository/org/springframework/spring-jcl/5.0.4.RELEASE/spring-jcl-5.0.4.RELEASE.jar, file:/C:/Users/Joe/.m2/repository/org/yaml/snakeyaml/1.19/snakeyaml-1.19.jar]
2026-11-06 22:29:24.487 DEBUG 10700 --- [           main] o.s.boot.SpringApplication               : Loading source class com.logicbig.example.ExcludeConfigExample
2026-11-06 22:29:26.169 DEBUG 10700 --- [           main] ConditionEvaluationReportLoggingListener : 


============================
CONDITIONS EVALUATION REPORT
============================


Positive matches:
-----------------

   GenericCacheConfiguration matched:
      - Cache org.springframework.boot.autoconfigure.cache.GenericCacheConfiguration automatic cache type (CacheCondition)

   NoOpCacheConfiguration matched:
      - Cache org.springframework.boot.autoconfigure.cache.NoOpCacheConfiguration automatic cache type (CacheCondition)

   PropertyPlaceholderAutoConfiguration#propertySourcesPlaceholderConfigurer matched:
      - @ConditionalOnMissingBean (types: org.springframework.context.support.PropertySourcesPlaceholderConfigurer; SearchStrategy: current) did not find any beans (OnBeanCondition)

   RedisCacheConfiguration matched:
      - Cache org.springframework.boot.autoconfigure.cache.RedisCacheConfiguration automatic cache type (CacheCondition)

   SimpleCacheConfiguration matched:
      - Cache org.springframework.boot.autoconfigure.cache.SimpleCacheConfiguration automatic cache type (CacheCondition)


Negative matches:
-----------------

   ActiveMQAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'javax.jms.ConnectionFactory', 'org.apache.activemq.ActiveMQConnectionFactory' (OnClassCondition)

   AopAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.aspectj.lang.annotation.Aspect', 'org.aspectj.lang.reflect.Advice', 'org.aspectj.weaver.AnnotatedElement' (OnClassCondition)

   ArtemisAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'javax.jms.ConnectionFactory', 'org.apache.activemq.artemis.jms.client.ActiveMQConnectionFactory' (OnClassCondition)

   BatchAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.batch.core.launch.JobLauncher', 'org.springframework.jdbc.core.JdbcOperations' (OnClassCondition)

   CacheAutoConfiguration:
      Did not match:
         - @ConditionalOnBean (types: org.springframework.cache.interceptor.CacheAspectSupport; SearchStrategy: all) did not find any beans of type org.springframework.cache.interceptor.CacheAspectSupport (OnBeanCondition)
      Matched:
         - @ConditionalOnClass found required class 'org.springframework.cache.CacheManager'; @ConditionalOnMissingClass did not find unwanted class (OnClassCondition)

   CacheAutoConfiguration.CacheManagerJpaDependencyConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean' (OnClassCondition)
         - Ancestor org.springframework.boot.autoconfigure.cache.CacheAutoConfiguration did not match (ConditionEvaluationReport.AncestorsMatchedCondition)

   CaffeineCacheConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.github.benmanes.caffeine.cache.Caffeine', 'org.springframework.cache.caffeine.CaffeineCacheManager' (OnClassCondition)

   CassandraAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.datastax.driver.core.Cluster' (OnClassCondition)

   CassandraDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.datastax.driver.core.Cluster', 'org.springframework.data.cassandra.core.CassandraAdminOperations' (OnClassCondition)

   CassandraReactiveDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.datastax.driver.core.Cluster', 'org.springframework.data.cassandra.core.ReactiveCassandraTemplate', 'reactor.core.publisher.Flux' (OnClassCondition)

   CassandraReactiveRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.data.cassandra.ReactiveSession', 'org.springframework.data.cassandra.repository.ReactiveCassandraRepository' (OnClassCondition)

   CassandraRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.datastax.driver.core.Session', 'org.springframework.data.cassandra.repository.CassandraRepository' (OnClassCondition)

   CloudAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.cloud.config.java.CloudScanConfiguration' (OnClassCondition)

   CodecsAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.http.codec.CodecConfigurer' (OnClassCondition)

   CouchbaseAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.couchbase.client.java.CouchbaseBucket', 'com.couchbase.client.java.Cluster' (OnClassCondition)

   CouchbaseCacheConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.couchbase.client.java.Bucket', 'com.couchbase.client.spring.cache.CouchbaseCacheManager' (OnClassCondition)

   CouchbaseDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.couchbase.client.java.Bucket', 'org.springframework.data.couchbase.repository.CouchbaseRepository' (OnClassCondition)

   CouchbaseReactiveDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.couchbase.client.java.Bucket', 'org.springframework.data.couchbase.repository.ReactiveCouchbaseRepository', 'reactor.core.publisher.Flux' (OnClassCondition)

   CouchbaseReactiveRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.couchbase.client.java.Bucket', 'org.springframework.data.couchbase.repository.ReactiveCouchbaseRepository', 'reactor.core.publisher.Flux' (OnClassCondition)

   CouchbaseRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.couchbase.client.java.Bucket', 'org.springframework.data.couchbase.repository.CouchbaseRepository' (OnClassCondition)

   DataSourceAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType' (OnClassCondition)

   DataSourceTransactionManagerAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.jdbc.core.JdbcTemplate', 'org.springframework.transaction.PlatformTransactionManager' (OnClassCondition)

   DispatcherServletAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.web.servlet.DispatcherServlet' (OnClassCondition)

   EhCacheCacheConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'net.sf.ehcache.Cache', 'org.springframework.cache.ehcache.EhCacheCacheManager' (OnClassCondition)

   ElasticsearchAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.elasticsearch.client.Client', 'org.springframework.data.elasticsearch.client.TransportClientFactoryBean' (OnClassCondition)

   ElasticsearchDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.elasticsearch.client.Client', 'org.springframework.data.elasticsearch.core.ElasticsearchTemplate' (OnClassCondition)

   ElasticsearchRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.elasticsearch.client.Client', 'org.springframework.data.elasticsearch.repository.ElasticsearchRepository' (OnClassCondition)

   EmbeddedLdapAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.unboundid.ldap.listener.InMemoryDirectoryServer' (OnClassCondition)

   EmbeddedMongoAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.mongodb.MongoClient', 'de.flapdoodle.embed.mongo.MongodStarter' (OnClassCondition)

   EmbeddedWebServerFactoryCustomizerAutoConfiguration.JettyWebServerFactoryCustomizerConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.eclipse.jetty.server.Server', 'org.eclipse.jetty.util.Loader', 'org.eclipse.jetty.webapp.WebAppContext' (OnClassCondition)

   EmbeddedWebServerFactoryCustomizerAutoConfiguration.TomcatWebServerFactoryCustomizerConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.apache.catalina.startup.Tomcat', 'org.apache.coyote.UpgradeProtocol' (OnClassCondition)

   EmbeddedWebServerFactoryCustomizerAutoConfiguration.UndertowWebServerFactoryCustomizerConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'io.undertow.Undertow', 'org.xnio.SslClientAuthMode' (OnClassCondition)

   ErrorMvcAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'javax.servlet.Servlet', 'org.springframework.web.servlet.DispatcherServlet' (OnClassCondition)

   ErrorWebFluxAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.web.reactive.config.WebFluxConfigurer' (OnClassCondition)

   FlywayAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.flywaydb.core.Flyway' (OnClassCondition)

   FreeMarkerAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'freemarker.template.Configuration', 'org.springframework.ui.freemarker.FreeMarkerConfigurationFactory' (OnClassCondition)

   GroovyTemplateAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'groovy.text.markup.MarkupTemplateEngine' (OnClassCondition)

   GsonAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.google.gson.Gson' (OnClassCondition)

   H2ConsoleAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.h2.server.web.WebServlet' (OnClassCondition)

   HazelcastAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.hazelcast.core.HazelcastInstance' (OnClassCondition)

   HazelcastCacheConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.hazelcast.core.HazelcastInstance', 'com.hazelcast.spring.cache.HazelcastCacheManager' (OnClassCondition)

   HazelcastJpaDependencyAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.hazelcast.core.HazelcastInstance', 'org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean' (OnClassCondition)

   HibernateJpaAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean', 'javax.persistence.EntityManager' (OnClassCondition)

   HttpEncodingAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.web.filter.CharacterEncodingFilter' (OnClassCondition)

   HttpHandlerAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.web.reactive.DispatcherHandler', 'org.springframework.http.server.reactive.HttpHandler' (OnClassCondition)

   HttpMessageConvertersAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.http.converter.HttpMessageConverter' (OnClassCondition)

   HypermediaAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.hateoas.Resource', 'org.springframework.web.bind.annotation.RequestMapping', 'org.springframework.plugin.core.Plugin' (OnClassCondition)

   InfinispanCacheConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.infinispan.spring.provider.SpringEmbeddedCacheManager' (OnClassCondition)

   InfluxDbAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.influxdb.InfluxDB' (OnClassCondition)

   IntegrationAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.integration.config.EnableIntegration' (OnClassCondition)

   JCacheCacheConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'javax.cache.Caching', 'org.springframework.cache.jcache.JCacheCacheManager' (OnClassCondition)

   JacksonAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.fasterxml.jackson.databind.ObjectMapper' (OnClassCondition)

   JdbcTemplateAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.jdbc.core.JdbcTemplate' (OnClassCondition)

   JerseyAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.glassfish.jersey.server.spring.SpringComponentProvider', 'javax.servlet.ServletRegistration' (OnClassCondition)

   JestAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'io.searchbox.client.JestClient' (OnClassCondition)

   JmsAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'javax.jms.Message', 'org.springframework.jms.core.JmsTemplate' (OnClassCondition)

   JndiConnectionFactoryAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.jms.core.JmsTemplate' (OnClassCondition)

   JndiDataSourceAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType' (OnClassCondition)

   JooqAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.jooq.DSLContext' (OnClassCondition)

   JpaRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.jpa.repository.JpaRepository' (OnClassCondition)

   JsonbAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'javax.json.bind.Jsonb' (OnClassCondition)

   JtaAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'javax.transaction.Transaction' (OnClassCondition)

   KafkaAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.kafka.core.KafkaTemplate' (OnClassCondition)

   LdapAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.ldap.core.ContextSource' (OnClassCondition)

   LdapDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.ldap.repository.LdapRepository' (OnClassCondition)

   LdapRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.ldap.repository.LdapRepository' (OnClassCondition)

   LiquibaseAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'liquibase.integration.spring.SpringLiquibase', 'liquibase.change.DatabaseChange' (OnClassCondition)

   MailSenderAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'javax.mail.internet.MimeMessage' (OnClassCondition)

   MailSenderValidatorAutoConfiguration:
      Did not match:
         - @ConditionalOnProperty (spring.mail.test-connection) did not find property 'test-connection' (OnPropertyCondition)

   MessageSourceAutoConfiguration:
      Did not match:
         - ResourceBundle did not find bundle with basename messages (MessageSourceAutoConfiguration.ResourceBundleCondition)

   MongoAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.mongodb.MongoClient' (OnClassCondition)

   MongoDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.mongodb.MongoClient', 'org.springframework.data.mongodb.core.MongoTemplate' (OnClassCondition)

   MongoReactiveAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.mongodb.reactivestreams.client.MongoClient' (OnClassCondition)

   MongoReactiveDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.mongodb.reactivestreams.client.MongoClient', 'org.springframework.data.mongodb.core.ReactiveMongoTemplate' (OnClassCondition)

   MongoReactiveRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.mongodb.reactivestreams.client.MongoClient', 'org.springframework.data.mongodb.repository.ReactiveMongoRepository' (OnClassCondition)

   MongoRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'com.mongodb.MongoClient', 'org.springframework.data.mongodb.repository.MongoRepository' (OnClassCondition)

   MultipartAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'javax.servlet.Servlet', 'org.springframework.web.multipart.support.StandardServletMultipartResolver', 'javax.servlet.MultipartConfigElement' (OnClassCondition)

   MustacheAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.samskivert.mustache.Mustache' (OnClassCondition)

   Neo4jDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.neo4j.ogm.session.SessionFactory', 'org.springframework.data.neo4j.transaction.Neo4jTransactionManager', 'org.springframework.transaction.PlatformTransactionManager' (OnClassCondition)

   Neo4jRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.neo4j.ogm.session.Neo4jSession', 'org.springframework.data.neo4j.repository.Neo4jRepository' (OnClassCondition)

   OAuth2ClientAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.security.config.annotation.web.configuration.EnableWebSecurity', 'org.springframework.security.oauth2.client.registration.ClientRegistration' (OnClassCondition)

   PersistenceExceptionTranslationAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor' (OnClassCondition)

   ProjectInfoAutoConfiguration#buildProperties:
      Did not match:
         - @ConditionalOnResource did not find resource '${spring.info.build.location:classpath:META-INF/build-info.properties}' (OnResourceCondition)

   ProjectInfoAutoConfiguration#gitProperties:
      Did not match:
         - GitResource did not find git info at classpath:git.properties (ProjectInfoAutoConfiguration.GitResourceAvailableCondition)

   QuartzAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.quartz.Scheduler', 'org.springframework.scheduling.quartz.SchedulerFactoryBean', 'org.springframework.transaction.PlatformTransactionManager' (OnClassCondition)

   RabbitAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.amqp.rabbit.core.RabbitTemplate', 'com.rabbitmq.client.Channel' (OnClassCondition)

   ReactiveUserDetailsServiceAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.security.authentication.ReactiveAuthenticationManager' (OnClassCondition)

   ReactiveWebServerFactoryAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.http.ReactiveHttpInputMessage' (OnClassCondition)

   ReactorCoreAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'reactor.core.publisher.Mono', 'reactor.core.publisher.Flux' (OnClassCondition)

   RedisAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.redis.core.RedisOperations' (OnClassCondition)

   RedisReactiveAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.data.redis.connection.ReactiveRedisConnectionFactory', 'org.springframework.data.redis.core.ReactiveRedisTemplate', 'reactor.core.publisher.Flux' (OnClassCondition)

   RedisRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.redis.repository.configuration.EnableRedisRepositories' (OnClassCondition)

   RepositoryRestMvcAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.rest.webmvc.config.RepositoryRestMvcConfiguration' (OnClassCondition)

   RestTemplateAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.web.client.RestTemplate' (OnClassCondition)

   SecurityAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.security.authentication.DefaultAuthenticationEventPublisher' (OnClassCondition)

   SecurityFilterAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.security.web.context.AbstractSecurityWebApplicationInitializer', 'org.springframework.security.config.http.SessionCreationPolicy' (OnClassCondition)

   SendGridAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.sendgrid.SendGrid' (OnClassCondition)

   ServletWebServerFactoryAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'javax.servlet.ServletRequest' (OnClassCondition)

   SessionAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.session.Session' (OnClassCondition)

   SolrAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.apache.solr.client.solrj.impl.HttpSolrClient', 'org.apache.solr.client.solrj.impl.CloudSolrClient' (OnClassCondition)

   SolrRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.apache.solr.client.solrj.SolrClient', 'org.springframework.data.solr.repository.SolrRepository' (OnClassCondition)

   SpringApplicationAdminJmxAutoConfiguration:
      Did not match:
         - @ConditionalOnProperty (spring.application.admin.enabled=true) did not find property 'enabled' (OnPropertyCondition)

   SpringDataWebAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.data.web.PageableHandlerMethodArgumentResolver', 'org.springframework.web.servlet.config.annotation.WebMvcConfigurer' (OnClassCondition)

   ThymeleafAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.thymeleaf.templatemode.TemplateMode' (OnClassCondition)

   TransactionAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.transaction.PlatformTransactionManager' (OnClassCondition)

   UserDetailsServiceAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.security.authentication.AuthenticationManager' (OnClassCondition)

   ValidationAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'javax.validation.executable.ExecutableValidator' (OnClassCondition)

   WebClientAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.web.reactive.function.client.WebClient' (OnClassCondition)

   WebFluxAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.web.reactive.config.WebFluxConfigurer' (OnClassCondition)

   WebFluxSecurityConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.springframework.security.config.annotation.web.reactive.EnableWebFluxSecurity', 'org.springframework.security.web.server.WebFilterChainProxy' (OnClassCondition)

   WebMvcAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'javax.servlet.Servlet', 'org.springframework.web.servlet.DispatcherServlet', 'org.springframework.web.servlet.config.annotation.WebMvcConfigurer' (OnClassCondition)

   WebServicesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.ws.transport.http.MessageDispatcherServlet' (OnClassCondition)

   WebSocketMessagingAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.web.socket.config.annotation.WebSocketMessageBrokerConfigurer' (OnClassCondition)

   WebSocketReactiveAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'javax.servlet.Servlet', 'javax.websocket.server.ServerContainer' (OnClassCondition)

   WebSocketServletAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'javax.servlet.Servlet', 'javax.websocket.server.ServerContainer' (OnClassCondition)

   XADataSourceAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'javax.transaction.TransactionManager', 'org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType' (OnClassCondition)


Exclusions:
-----------

    org.springframework.boot.autoconfigure.jmx.JmxAutoConfiguration


Unconditional classes:
----------------------

    org.springframework.boot.autoconfigure.security.reactive.ReactiveSecurityAutoConfiguration

    org.springframework.boot.autoconfigure.context.ConfigurationPropertiesAutoConfiguration

    org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration

    org.springframework.boot.autoconfigure.web.embedded.EmbeddedWebServerFactoryCustomizerAutoConfiguration

    org.springframework.boot.autoconfigure.info.ProjectInfoAutoConfiguration

Even though we set spring.jmx.enabled=true, JmxAutoConfiguration is not applied. It now appears under Exclusions, and it is not listed under Positive matches.

There are other ways to exclude auto-configurations:

  • Use excludeName with the fully qualified class name, like @EnableAutoConfiguration(excludeName = "org.springframework.boot.autoconfigure.jmx.JmxAutoConfiguration"). This is useful when the class may not be on the classpath. @SpringBootApplication has the same exclude and excludeName attributes.
  • Use the property spring.autoconfigure.exclude, for example spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.jmx.JmxAutoConfiguration in application.properties.

The excluded class must be a real auto-configuration class. Otherwise, the application fails to start with an IllegalStateException.



Version history and deprecations (summary)

  • Spring Boot 1.5: AutoConfigurationImportSelector replaced EnableAutoConfigurationImportSelector (deprecated).
  • Spring Boot 2.0: EnableAutoConfigurationImportSelector was removed. The report was renamed to "CONDITIONS EVALUATION REPORT".
  • Spring Boot 2.2: JMX auto-configuration became off by default.
  • Spring Boot 2.7: @AutoConfiguration and the AutoConfiguration.imports file were introduced. Registering auto-configuration in spring.factories was deprecated.
  • Spring Boot 3.0: registering auto-configuration in spring.factories was removed. Java 17 became the minimum, and javax.* packages changed to jakarta.*.
  • Spring Boot 3.5: @ConditionalOnBooleanProperty was added. Open-source support for the whole 3.x line ended in mid-2026, so new projects should use 4.x.
  • Spring Boot 4.0: modular auto-configuration (smaller jars, new packages, some new or renamed starters). A spring-boot-autoconfigure-classic module helps with migration.

Example Project

Dependencies and Technologies Used:

  • Spring Boot 4.1.2
    Corresponding Spring Framework Version 7.0.10
     Version Compatibility: 2.0.0.RELEASE - 4.1.2Version List
    ×

    Version compatibilities of spring-boot-starter-parent with this example:

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  • spring-boot-starter (Core starter, including auto-configuration support, logging and YAML)
  • JDK 25

Build Tool:
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  • boot-customizing-autoconfig
    • src
      • main
        • java
          • com
            • logicbig
              • example
                • DebugModeExample.java
          • resources

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