JAX-RS - UriInfo Examples

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.UriInfo;
import java.net.URI;

@Path("/")
public class MyResource {
    @Context
    UriInfo uriInfo;
    @PathParam("num")
    int pathNum;
    @QueryParam("q")
    String qValue;

    @GET
    @Path("/test{num:[1-9]{0,1}}")
    public String handleRequest() {
        URI uri = uriInfo.getRequestUri();
        return String.format(" response from: %s%n PathNum: %s%n query paramMyResource: %s%n",
                uri, pathNum, qValue);
    }
}

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.UriInfo;
import java.net.URI;

@Path("/property/")
public class MyResource1 {
    UriInfo uriInfo;
    int pathNum;
    String myParam;

    @GET
    @Path("/test{num:[1-9]{0,1}}")
    public String handleRequest() {
        URI uri = uriInfo.getRequestUri();
        return String.format("response from: %s%nPathNum: %s%nmyParam: %s%n",
                uri, pathNum, myParam);
    }

    @Context
    public void setUriInfo(UriInfo uriInfo) {
        this.uriInfo = uriInfo;
    }

    @PathParam("num")
    public void setPathNum(int pathNum) {
        this.pathNum = pathNum;
    }

    @QueryParam("q")
    public void setMyParam(String myParam) {
        this.myParam = myParam;
    }
}

@Provider
@Logged
public class LogFilter implements ContainerRequestFilter, ContainerResponseFilter {

    @Override
    public void filter(ContainerRequestContext reqContext) throws IOException {
        System.out.println("-- req info --");
        UriInfo uriInfo = reqContext.getUriInfo();
        log(uriInfo, reqContext.getHeaders());
    }

    @Override
    public void filter(ContainerRequestContext reqContext,
                       ContainerResponseContext resContext) throws IOException {
        System.out.println("-- res info --");
        UriInfo uriInfo = reqContext.getUriInfo();
        log(uriInfo, resContext.getHeaders());
    }

    private void log(UriInfo uriInfo, MultivaluedMap<String, ?> headers) {
        System.out.println("Path: " + uriInfo.getPath());
        headers.entrySet().forEach(h -> System.out.println(h.getKey() + ": " + h.getValue()));
    }
}

import javax.ws.rs.NameBinding;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@NameBinding
@Target({ElementType.TYPE, ElementType.METHOD})
@Retention(value = RetentionPolicy.RUNTIME)
public @interface Logged {
}

@Priority(1)
@Provider
public class InvalidRequestFilter implements ContainerRequestFilter {

    @Override
    public void filter(ContainerRequestContext reqContext) throws IOException {
        Response responseForInvalidRequest = validateRequest(reqContext);
        if (responseForInvalidRequest != null) {
            reqContext.abortWith(responseForInvalidRequest);
        }
    }

    private Response validateRequest(ContainerRequestContext reqContext) {
        UriInfo uriInfo = reqContext.getUriInfo();
        String path = uriInfo.getPath();
        if (path.equals("orders/history")) {
            String msg = String.format("The feature is not yet supported: %s%n", path);
            CacheControl cc = new CacheControl();
            cc.setNoStore(true);
            Response response = Response.status(Response.Status.NOT_IMPLEMENTED)
                                        .cacheControl(cc)
                                        .entity(msg)
                                        .build();
            return response;
        }
        return null;
    }
}

@Priority(2)
@Provider
public class LogFilter implements ContainerRequestFilter, ContainerResponseFilter {

    @Override
    public void filter(ContainerRequestContext reqContext) throws IOException {
        System.out.println("-- request info --");
        UriInfo uriInfo = reqContext.getUriInfo();
        log(uriInfo, reqContext.getHeaders());
    }

    @Override
    public void filter(ContainerRequestContext reqContext,
                       ContainerResponseContext resContext) throws IOException {
        System.out.println("-- response info --");
        UriInfo uriInfo = reqContext.getUriInfo();
        log(uriInfo, resContext.getHeaders());
    }

    private void log(UriInfo uriInfo, MultivaluedMap<String, ?> headers) {
        System.out.println("Path: " + uriInfo.getPath());
        System.out.println("HEADERS:");
        headers.entrySet().forEach(h -> System.out.println(h.getKey() + ": " + h.getValue()));
    }
}

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.UriInfo;
import java.net.URI;

@Path("/users")
public class UserResource {
    @Context
    UriInfo uriInfo;

    public UserResource() {
        printUriInfo("In constructor");
    }

    @GET
    public String getUsers() {
        printUriInfo("In getUsers() method");
        return "returning dummy user list";
    }

    @GET
    @Path("{id}")
    public String getUserById(@PathParam("id") String id) {
        printUriInfo("In getUserById() method");
        return "returning dummy user by id " + id;
    }

    private void printUriInfo(String msg) {
        System.out.println("---------------");
        System.out.println(msg);
        System.out.println("-- UriInfo --");
        if (uriInfo == null) {
            System.out.println("UriInfo: " + uriInfo);
            return;
        }
        System.out.println("absolutePath: " + uriInfo.getAbsolutePath());
        System.out.println("baseUri: " + uriInfo.getBaseUri());
        System.out.println("matchedResource: " + uriInfo.getMatchedResources());
        System.out.println("matchedUri: " + uriInfo.getMatchedURIs());
        System.out.println("path: " + uriInfo.getPath());
        System.out.println("pathParameters: " + uriInfo.getPathParameters());
        System.out.println("pathSegments: " + uriInfo.getPathSegments());
        System.out.println("queryParameters: " + uriInfo.getQueryParameters());
        System.out.println("requestUri: " + uriInfo.getRequestUri());
        System.out.println("relativize test: " + uriInfo.relativize(URI.create("test")));
        System.out.println("resolve test: " + uriInfo.resolve(URI.create("test")));
    }
}