SpringBoot统一异常处理详解

<&＃63;xml version="1.0" encoding="UTF-8"&＃63;>

 4.0.0

 bsea
 SpringBootException
 1.0-SNAPSHOT
 jar
 
  org.springframework.boot
  spring-boot-starter-parent
  1.5.14.RELEASE
   
 

 
  UTF-8
  UTF-8
  1.8
 

 
  
   org.springframework.boot
   spring-boot-starter-web
  

  
   org.springframework.boot
   spring-boot-starter-test
   test
  
 

 
  
   
    org.springframework.boot
    spring-boot-maven-plugin
   
  
 

package com.zz;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class App {
 public static void main(String[] args) {
  SpringApplication.run(App.class,args);
 }
}

package com.zz.exception;

public class UserNotExistException extends RuntimeException{
 private static final long serialVersiOnUID= -1574716826948451793L;

 private String id;

 public UserNotExistException(String id){
  super("user not exist");
  this.id = id;
 }

 public String getId() {
  return id;
 }

 public void setId(String id) {
  this.id = id;
 }
}

package com.zz.handler;

import com.zz.exception.UserNotExistException;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.ResponseStatus;

import java.util.HashMap;
import java.util.Map;

@ControllerAdvice
public class ControllerExceptionHandler {
 //返回json的错误信息
 @ExceptionHandler(UserNotExistException.class)
 @ResponseBody
 @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
 public Map handleUserNotExistsException(UserNotExistException e) {
  Map map = new HashMap<>();
  map.put("id", e.getId());
  map.put("message", e.getMessage());
  return map;
 }
 //错误以后，跳转到自己定义的错误页面
 @ExceptionHandler(ArithmeticException.class)
 public String handle1(ArithmeticException e) {
  System.out.println("handle1 500*到了**************");
  return "/500.html";
 }
}

package com.zz.controller;

import com.zz.exception.UserNotExistException;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("user")
public class UserController {

 @GetMapping("/{id:\\d+}")
 public void get(@PathVariable String id) {

  throw new UserNotExistException(id);
 }
 @GetMapping("error2")
 public void get2() {
  int a=1/0;
 }
}