SpringMVC学习笔记五:HandlerExceptionResolver异常处理

继承HandlerExceptionResolver自定义异常处理器
控制器ExceptionController.java

package com.orange.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import com.orange.exception.NameException;
import com.orange.exception.PasswordException;

@Controller
@RequestMapping("/exception")
public class ExceptionController {

    @RequestMapping("handlerException")
    public ModelAndView doException2(String name, String password, ModelAndView mav) throws Exception{
        if(! "admin".equals(name)){
            throw new NameException("用户名错误");
        }
        if(! "admin".equals(password)){
            throw new PasswordException("密码错误");
        }
        mav.addObject("name", name);
        mav.addObject("password", password);
        mav.setViewName("/showException.jsp");
        return mav;
    }
}

定义两个异常类型,NameException.Java和PasswordException.java

package com.orange.exception;

public class NameException extends Exception {

    public NameException() {
        super();
    }

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

    
}

package com.orange.exception;

public class PasswordException extends Exception {

    public PasswordException() {
        super();
    }

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

    
}

自定义异常处理器MyException,当发生异常时,指定跳转的视图jsp

package com.orange.exception;

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

import org.springframework.web.servlet.HandlerExceptionResolver;
import org.springframework.web.servlet.ModelAndView;

import com.fasterxml.jackson.core.sym.Name;

public class MyExceptionResolver implements HandlerExceptionResolver {

    @Override
    public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler,
            Exception ex) {
        ModelAndView mav = new ModelAndView();
        mav.addObject("ex", ex);
        mav.setViewName("/defaultException.jsp");
        
        if(ex instanceof NameException){
            mav.setViewName("/showException.jsp");
        }
        
        if(ex instanceof PasswordException){
            mav.setViewName("/showException.jsp");
        }
        
        return mav;
    }

}

注册异常处理器

当发生异常时,跳转的jsp页面
exception.jsp

<%@ page language="java" contentType="text/html; charset=GBK"
    pageEncoding="GBK"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>    
<%
    String path = request.getContextPath();
    String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>









    
SimpleMappingExceptionResolver

    测试



    
HandlerExceptionResolver

    

        name: 

        password: 

        
    

showException.jsp

<%@ page language="java" contentType="text/html; charset=GBK"
    pageEncoding="GBK"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>    
<%
    String path = request.getContextPath();
    String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>









    


    

    

注：此段代码源自于博客园的愤怒的绿萝用户，如有侵权请联系