《Springboot极简教程》系统异常全局统一处理：@ControllerAdvice plus @ExceptionHandler统一异常处理代码实例运行

一个会写诗的程序员

发布于 2018-08-20 10:24:46

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发布于 2018-08-20 10:24:46

文章被收录于专栏：一个会写诗的程序员的博客一个会写诗的程序员的博客

统一异常处理

系统有一个统一异常处理的功能，可减少重复代码，又便于维护。

用@ControllerAdvice和@ExceptionHandler两个注解来做异常的统一处理。

@ControllerAdvice：作用于所有@Controller标注的Controller类 @ExceptionHandler：作用于所有@RequestMapping标注的方法抛出的指定类型的异常。

代码实例

ExceptionHandlerAdvice.java

package com.restfeel.advice

import org.springframework.web.bind.annotation.ControllerAdvice
import org.springframework.web.bind.annotation.ExceptionHandler
import org.springframework.web.context.request.WebRequest
import org.springframework.web.servlet.ModelAndView


/**
 * Created by jack on 2017/3/30.
 *
 * 系统全局统一异常处理
 */
@ControllerAdvice
class ExceptionHandlerAdvice {
    @ExceptionHandler(value = Exception::class) //表示捕捉到所有的异常，你也可以捕捉一个你自定义的异常
    fun exception(exception: Exception, request: WebRequest): ModelAndView {
        val modelAndView = ModelAndView("jsp/error")//error页面
        modelAndView.addObject("errorMessage", exception.message)
        modelAndView.addObject("stackTrace", exception.stackTrace)
        return modelAndView

    }
}

error.jsp

<%--
  Created by IntelliJ IDEA.
  User: jack
  Date: 2017/3/30
  Time: 02:08
  To change this template use File | Settings | File Templates.
--%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@taglib uri="http://java.sun.com/jsp/jstl/functions"
          prefix="fn" %>
<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <jsp:include page="header.jsp"></jsp:include>
</head>
<body>
<jsp:include page="top-nav.jsp"></jsp:include>
<div class="col-sm-12">
    <h1>系统异常统一处理</h1>
    <h3>${errorMessage}></h3>
    <h2>Debug</h2>
    <a href="https://www.google.com/webhp?hl=zh-CN#safe=strict&hl=zh-CN&q=${errorMessage}"
       class="btn btn-primary btn-lg" target="_blank" id="Google">Google</a>
    <a href="https://www.baidu.com/s?wd=${errorMessage}" class="btn btn-info btn-lg"  target="_blank" id="Baidu">Baidu</a>
    <a href="http://stackoverflow.com/search?q=${fn:substring(errorMessage,0,100)}"
       class="btn btn-default btn-lg"  target="_blank" id="StackOverFlow">StackOverFlow</a>

    <h2>异常堆栈跟踪日志StackTrace</h2>
    <code>
        <c:forEach items="${stackTrace}" var="line">
            ${line}
        </c:forEach>
    </code>
</div>


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