Spring MVC  import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import java.util.logging.Logger;
@Controller
@RequestMapping("trades")
public class TradeController {
private static final Logger LOGGER = Logger.getLogger(TradeController.class.getName());
@RequestMapping
public String handleTradeRequest (Trade trade, Model model) {
String msg = String.format("trade request. buySell: %s, buyCurrency: %s, sellCurrency: %s",
trade.getBuySell(), trade.getBuyCurrency(),
trade.getSellCurrency());
LOGGER.info(msg);
model.addAttribute("msg", msg);
return "my-page";
}
@RequestMapping("{buySell}/{buyCurrency}/{sellCurrency}")
public String handleTradeRequest2 (Trade trade, Model model) {
String msg = String.format("trade request. buySell: %s, buyCurrency: %s, sellCurrency: %s",
trade.getBuySell(), trade.getBuyCurrency(),
trade.getSellCurrency());
LOGGER.info(msg);
model.addAttribute("msg", msg);
return "my-page";
}
@RequestMapping("paramTest")
public String handleTradeRequest (@RequestParam("buySell") String buySell,
@RequestParam("buyCurrency") String buyCurrency,
@RequestParam("sellCurrency") String sellCurrency,
Model map) {
String msg = String.format("trade request. buySell: %s, buyCurrency: %s, sellCurrency: %s",
buySell, buyCurrency, sellCurrency);
LOGGER.info(msg);
map.addAttribute("msg", msg);
return "my-page";
}
@RequestMapping("pathTest/{buySell}/{buyCurrency}/{sellCurrency}")
public String handleTradeRequest3 (@PathVariable("buySell") String buySell,
@PathVariable("buyCurrency") String buyCurrency,
@PathVariable("sellCurrency") String sellCurrency,
Model map) {
String msg = String.format("trade request. buySell: %s, buyCurrency: %s, sellCurrency: %s",
buySell, buyCurrency, sellCurrency);
LOGGER.info(msg);
map.addAttribute("msg", msg);
return "my-page";
}
}
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
/**
* Using mutually exclusive regex, which can be used
* to avoid ambiguous mapping exception
*/
@Controller
@RequestMapping("/dept")
public class DeptController {
@RequestMapping("{id:[0-9]+}")
public String handleRequest(@PathVariable("id") String userId,
Model model) {
model.addAttribute("msg", "profile id: " + userId);
return "my-page";
}
@RequestMapping("{name:[a-zA-Z]+}")
public String handleRequest2(@PathVariable("name") String deptName,
Model model) {
model.addAttribute("msg", "dept name : " + deptName);
return "my-page";
}
}
/**
* This will cause exception :
* java.lang.IllegalStateException: Ambiguous handler methods ..
*/
@Controller
@RequestMapping("/employees")
public class EmployeeController {
@RequestMapping("{id}")
public String handleRequest(@PathVariable("id") String userId,
Model model) {
model.addAttribute("msg", "employee id: " + userId);
return "my-page";
}
@RequestMapping("{employeeName}")
public String handleRequest2(@PathVariable("employeeName") String userName,
Model model) {
model.addAttribute("msg", "employee name : " + userName);
return "my-page";
}
}
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import java.util.Map;
@Controller
@RequestMapping("users")
public class UserController {
@RequestMapping("{id}")
public String handleRequest(@PathVariable("id") String userId,
Model map) {
map.addAttribute("msg", "User id " + userId);
return "my-page";
}
//this will fail if code is not compiled with debugging information
@RequestMapping("profiles/{userName}")
public String handleRequest2(@PathVariable String userName,
Model model) {
model.addAttribute("msg", "user profile name : " + userName);
return "my-page";
}
@RequestMapping("{id}/posts/{postId}")
public String handleRequest3(@PathVariable("id") String userId,
@PathVariable("postId") String postId,
Model model) {
model.addAttribute("msg",
"user id : " + userId + ", post id: " + postId);
return "my-page";
}
@RequestMapping("{id}/messages/{msgId}")
public String handleRequest4(@PathVariable Map<String, String> varsMap,
Model model) {
model.addAttribute("msg", varsMap.toString());
return "my-page";
}
@RequestMapping({"/profile", "/profile/{id}"})
public String getUserProfile(
@PathVariable(value = "id", required = false) Long userId,
Model model) {
if (userId == null) {
model.addAttribute("msg", "No user id provided");
} else {
// ID provided → return that specific user's profile
model.addAttribute("msg",
"user id: " + userId);
}
return "my-page";
}
}
package com.logicbig.example;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import jakarta.servlet.http.HttpServletRequest;
@Controller
@ResponseBody
public class MyController {
@RequestMapping("/car?/s?o?/info")//score 0
public String test1(HttpServletRequest request) {
return "from test1(), request uri: " + request.getRequestURI();
}
@RequestMapping("/c*/s*d/info")//score 2, length = 12
public String test2(HttpServletRequest request) {
return "from test2(), request uri: " + request.getRequestURI();
}
@RequestMapping("/card/**")
//score 2 but will be used after others because of prefix pattern
public String test3(HttpServletRequest request) {
return "from test3(), request uri: " + request.getRequestURI();
}
//2 template variables = score 2
@RequestMapping("/card/{type}/{id:i.\\d+.*}")
public String test4(@PathVariable String type,
@PathVariable String id,
HttpServletRequest request) {
return "from test4(), request uri: " + request.getRequestURI() + "\n" +
"type: " + type + ", id: " + id;
}
}
package com.logicbig.example;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import jakarta.servlet.http.HttpServletRequest;
@Controller
@RequestMapping("/other/")
@ResponseBody
public class MyController2 {
@RequestMapping("/c*/s*d/info")//score 2, length = 12, wildcards=2
public String otherTest1(HttpServletRequest request) {
return "from otherTest1(), request uri: " + request.getRequestURI();
}
@RequestMapping("/card/{type}/info")//score 1, length 12 (/card/#/info), wildcards=0
public String otherTest2(@PathVariable String type, HttpServletRequest request) {
return "from otherTest2(), request uri: " + request.getRequestURI() + "\n" +
"type: " + type;
}
}
package com.logicbig.example;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import jakarta.servlet.http.HttpServletRequest;
@Controller
@RequestMapping("/another/")
@ResponseBody
public class MyController3 {
@RequestMapping("/c*/s*d/info")//score 2, length = 12, wildcards=2
public String anotherTest1(HttpServletRequest request) {
return "from anotherTest1(), request uri: " + request.getRequestURI();
}
@RequestMapping("/card/{type}/inf{id:.+}")//score 2, length 12 (/card/#/info), wildcard = 0
public String anotherTest2(@PathVariable String type, @PathVariable String id,
HttpServletRequest request) {
return "from anotherTest2(), request uri: " + request.getRequestURI()+"\n"+
"type: "+type+", id: "+id;
}
}
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