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springboot全局異常處理詳解

更新時間：2017年05月08日 14:31:16 作者：趙計(jì)剛

本篇文章主要介紹了springboot全局異常處理詳解，小編覺得挺不錯的，現(xiàn)在分享給大家，也給大家做個參考。一起跟隨小編過來看看吧

一、單個controller范圍的異常處理

package com.xxx.secondboot.web;

import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import com.xxx.secondboot.exception.MyExceptionResponse;

import io.swagger.annotations.Api;

@Api("測試controllerAdvice和全局異常處理")
@RestController
@RequestMapping("/advice1")
public class AdviceController {

  @RequestMapping(value = "/test1", method = RequestMethod.GET)
  public String test1() {
    throw new RuntimeException("advice1 - exception1");
  }

  @RequestMapping(value = "/test2", method = RequestMethod.GET)
  public String test2() {
    throw new RuntimeException("advice1 - exception2");
  }

  @ExceptionHandler(RuntimeException.class)
  public MyExceptionResponse exceptionHandler() {
    MyExceptionResponse resp = new MyExceptionResponse();
    resp.setCode(300);
    resp.setMsg("exception-Handler");
    return resp;
  }

}

說明：

在controller中加入被@ExceptionHandler修飾的類即可（在該注解中指定該方法需要處理的那些異常類）
該異常處理方法只在當(dāng)前的controller中起作用

二、全部controller范圍內(nèi)起作用的異常處理（全局異常處理）

1、全局異常處理類

package com.xxx.secondboot.web;

import javax.servlet.http.HttpServletResponse;

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.RestController;

import com.xxx.secondboot.exception.MyExceptionResponse;
import com.xxx.secondboot.exception.MyRuntimeException;

//@ControllerAdvice(annotations=RestController.class)
//@ControllerAdvice(basePackages={"com.xxx","com.ooo"})
@ControllerAdvice
public class GlobalExceptionHandler {
  @ExceptionHandler(RuntimeException.class)
  //  @ExceptionHandler(value={RuntimeException.class,MyRuntimeException.class})
  //  @ExceptionHandler//處理所有異常
  @ResponseBody //在返回自定義相應(yīng)類的情況下必須有，這是@ControllerAdvice注解的規(guī)定
  public MyExceptionResponse exceptionHandler(RuntimeException e, HttpServletResponse response) {
    MyExceptionResponse resp = new MyExceptionResponse();
    resp.setCode(300);
    resp.setMsg("exception-Handler");
    //    response.setStatus(600);
    return resp;
  }
}

說明：

@ControllerAdvice是controller的一個輔助類，最常用的就是作為全局異常處理的切面類
@ControllerAdvice可以指定掃描范圍
@ControllerAdvice約定了幾種可行的返回值，如果是直接返回model類的話，需要使用@ResponseBody進(jìn)行json轉(zhuǎn)換
1. 返回String，表示跳到某個view
2. 返回modelAndView
3. 返回model + @ResponseBody

2、controller

package com.xxx.secondboot.web;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import io.swagger.annotations.Api;

@Api("測試controllerAdvice和全局異常處理")
@RestController
@RequestMapping("/advice1")
public class AdviceController {

  @RequestMapping(value = "/test1", method = RequestMethod.GET)
  public String test1() {
    throw new RuntimeException("advice1 - exception1");
  }

  @RequestMapping(value = "/test2", method = RequestMethod.GET)
  public String test2() {
    throw new RuntimeException("advice1 - exception2");
  }

  //  @ExceptionHandler(RuntimeException.class)
  //  public MyExceptionResponse exceptionHandler() {
  //    MyExceptionResponse resp = new MyExceptionResponse();
  //    resp.setCode(300);
  //    resp.setMsg("exception-Handler");
  //    return resp;
  //  }

}

注意：