1 //    @RequestMapping(value="/user/{id:\\d+}",method=RequestMethod.GET)
 2     @JsonView(User.UserDetailView.class)
 3     @GetMapping(value="/{id:\\d+}")
 4     public User getInfo(@PathVariable(value="id") String idid){
 5 //        System.out.println("idtt="+idid);
 6 //        User user=new User();
 7 //        user.setUsername("tom");
 8 //        return user;
 9         throw new UserNotExistException(idid);
10
11     }

 1 package com.cao.exception;
 2
 3 public class UserNotExistException extends RuntimeException {
 4     private String id;
 5
 6     public UserNotExistException(String id) {
 7         super("UserNotExistException come");
 8         this.id=id;
 9     }
10
11     public String getId() {
12         return id;
13     }
14
15     public void setId(String id) {
16         this.id = id;
17     }
18
19 }

 1 package com.cao.web.controller;
 2
 3 import java.util.HashMap;
 4 import java.util.Map;
 5
 6 import org.springframework.http.HttpStatus;
 7 import org.springframework.web.bind.annotation.ControllerAdvice;
 8 import org.springframework.web.bind.annotation.ExceptionHandler;
 9 import org.springframework.web.bind.annotation.ResponseBody;
10 import org.springframework.web.bind.annotation.ResponseStatus;
11
12 import com.cao.exception.UserNotExistException;
13
14 //只处理其他控制器丢出来的异常，不处理http请求
15 @ControllerAdvice
16 public class ControllerExceptionHandler {
17     //要处理的异常类
18     @ExceptionHandler(UserNotExistException.class)
19     //map转成json
20     @ResponseBody
21     //返回的状态码
22     @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
23     public Map<String,Object> handleUserNotExistException(UserNotExistException ex){
24         Map<String,Object> result=new HashMap<>();
25         result.put("id", ex.getId());
26         result.put("message", ex.getMessage());
27         return result;
28     }
29 }