SSMSpringMVC25：SpringMVC异常顶级之自定义异常解析器

package cn.dawn.day17selfexceptionresolver.resolver;

import cn.dawn.day17selfexceptionresolver.userexception.UserageException;
import cn.dawn.day17selfexceptionresolver.userexception.UsernameException;
import org.springframework.web.servlet.HandlerExceptionResolver;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Created by Dawn on 2018/3/30.
 */
public class MyHandlerExceptionResolver implements HandlerExceptionResolver {
    public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) {
        ModelAndView modelAndView=new ModelAndView();
        /*返回的异常对象*/
        modelAndView.addObject("ex",ex);
        /*判断去那个页面*/
        if(ex instanceof UsernameException){
            modelAndView.setViewName("name");
        }
        if(ex instanceof UserageException){
            modelAndView.setViewName("age");
        }

        return modelAndView;
    }
}

"1.0" encoding="UTF-8"?>
"http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd
         http://www.springframework.org/schema/context
         http://www.springframework.org/schema/context/spring-context.xsd">

    
    base-package="cn.dawn.day17selfexceptionresolver">
    
    class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        "prefix" value="/day17/">
        "suffix" value=".jsp">
    

    
    

package cn.dawn.day17selfexceptionresolver.userexception;

/**
 * Created by Dawn on 2018/3/30.
 */
public class UserageException extends Exception {
    public UserageException() {
        super();
    }

    public UserageException(String message) {
        super(message);
    }
}

package cn.dawn.day17selfexceptionresolver.userexception;

/**
 * Created by Dawn on 2018/3/30.
 */
public class UsernameException extends Exception {
    public UsernameException() {
        super();
    }

    public UsernameException(String message) {
        super(message);
    }
}

package cn.dawn.day17selfexceptionresolver;

import cn.dawn.day17selfexceptionresolver.userexception.UserageException;
import cn.dawn.day17selfexceptionresolver.userexception.UsernameException;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

/**
 * Created by Dawn on 2018/3/28.
 */
@Controller
public class ZDYExceptionController {
    @RequestMapping("/zidingyiException")
    public String zidingyiException(String username,Integer userage) throws Exception {
        if(!username.equals("admin")){
            throw new UsernameException("登陆名不正确");
        }
        if(userage<18){
            throw new UserageException("未成年，走开");
        }
        return "success";
    }
}

<%@ page  pageEncoding="UTF-8" cOntentType="text/html;charset=UTF-8" language="java" isELIgnored="false"  %>


    


登录
"${pageContext.request.contextPath}/zidingyiException" method="post">

    用户名:"username">
    年龄:"userage">

    "submit" value="登录"/>

<%@ page language="java" pageEncoding="utf-8" isELIgnored="false" %>


<%--"image/1.jpg">--%>
Success!

<%@ page  pageEncoding="UTF-8" cOntentType="text/html;charset=UTF-8" language="java" isELIgnored="false"  %>


    


ERROR
${ex.message}

服务器被猴子砍了，攻城狮在抢修中，还杀了个程序猿祭天

<%@ page  pageEncoding="UTF-8" cOntentType="text/html;charset=UTF-8" language="java" isELIgnored="false"  %>


    


年龄错误ERROR
${ex.message}

服务器被猴子砍了，攻城狮在抢修中，还杀了个程序猿祭天

<%@ page  pageEncoding="UTF-8" cOntentType="text/html;charset=UTF-8" language="java" isELIgnored="false"  %>


    


名字错误ERROR
${ex.message}

服务器被猴子砍了，攻城狮在抢修中，还杀了个程序猿祭天