springboot控制器通知处理异常

最新推荐文章于 2025-02-17 16:23:32 发布

原创最新推荐文章于 2025-02-17 16:23:32 发布 · 1.2k 阅读

0 ·

CC 4.0 BY-SA版权

spring boot 专栏收录该内容

20 篇文章

订阅专栏

本文介绍了在Spring Boot中通过控制器通知实现统一异常处理的方法，包括自定义异常、创建统一异常处理器和测试控制器。在浏览器输入特定地址测试，返回包含错误码和信息的结果，如404表示未找到资源。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

springboot中通过控制器通知统一的来实现异常处理

自定义异常

package com.example.springboot.exception;

public class NotFoundException extends RuntimeException{

    private static final long serialVersionUID = 1L;
    private Long code;
    private String customMsg;

    public NotFoundException(){

    }

    public NotFoundException(Long code,String customMsg){
        super();
        this.code = code;
        this.customMsg = customMsg;
    }

    public Long getCode() {
        return code;
    }

    public String getCustomMsg() {
        return customMsg;
    }

    public void setCode(Long code) {
        this.code = code;
    }

    public void setCustomMsg(String customMsg) {
        this.customMsg = customMsg;
    }
}

创建统一异常处理器

package com.example.springboot.handler;

import com.example.springboot.exception.NotFoundException;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.util.HashMap;
import java.util.Map;

@ControllerAdvice(
        //指定拦截包的控制器
        basePackages = {"com.example.springboot.controller.*"},
        //限定被标注为@Controller或者@RestController的类才被拦截
        annotations = {Controller.class, RestController.class}
)
public class ControllerExHandler {
    //异常处理，可以定义异常类型进行拦截处理
    @ExceptionHandler(value = NotFoundException.class)
    @ResponseBody
    //定义为服务器错误状态码
    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    public Map<String,Object> exception(HttpServletRequest request, NotFoundException ex){
        Map<String,Object> msgMap = new HashMap<>();
        msgMap.put("code",ex.getCode());
        msgMap.put("message",ex.getCustomMsg());
        return msgMap;
    }
}

创建测试控制器

package com.example.springboot.controller;


import com.example.springboot.exception.NotFoundException;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;

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

@org.springframework.web.bind.annotation.RestController
@RequestMapping("/rest")
public class RestController {

    @GetMapping("/ex")
    public Map rest(){
        Map map = new HashMap();
        map.put("success","ok");
        if(true)
        throw new NotFoundException(404L,"not found source");
        return map;
    }

}

浏览器输入 http://localhost:8082/rest/ex

返回 {"code":404,"message":"not found source"}