SpringMvc 全局异常处理

MyExceptionHandler

package exception;

import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.servlet.ModelAndView;

@ControllerAdvice
public class MyExceptionHandler {//不是控制器，仅仅是 用于处理异常的类

    @ExceptionHandler(Exception.class)
    public ModelAndView handlerArithmeticException2(Exception e) {
        ModelAndView mv = new ModelAndView("error");
        System.out.println(e + "============" + "该@ControllerAdvice中的异常处理方法，可以处理任何类中的异常");
        mv.addObject("er", e);
        return mv;
    }
}

SecondSpringMVCHandler

package handler;

import exception.MyArrayIndexOutofBoundsException;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseStatus;

@Controller
@RequestMapping("second")
public class SecondSpringMVCHandler {

    @RequestMapping("testExceptionHandler")
    public String testExceptionHandler() {
        System.out.println(1 / 0);
        return "success";
    }

    @RequestMapping("testExceptionHandler2")
    public String testExceptionHandler2() {
        int[] nums = new int[2];
        System.out.println(nums[2]);//ArrayIndexOutOfBoundsException
        return "success";
    }
}

component-scan

<context:component-scan base-package="exception"></context:component-scan>

error.jsp

<%@ 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>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>Insert title here</title>
</head>
<body>
        ${requestScope.er }
</body>
</html>