springmvc中的异常处理方法

//1、自定义异常处理类 2、编写异常处理器 3、配置异常处理器

package com.hope.exception;

/**
 * 异常处理类
 * @author newcityman
 * @date 2019/11/28 - 23:10
 */
public class SysExecepiton extends Exception {
 private String message;

 @Override
 public String getMessage() {
 return message;
 }

 public void setMessage(String message) {
 this.message = message;
 }

 public SysExecepiton(String message) {
 this.message = message;
 }
}

package com.hope.exception;

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

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


/**
 * 异常处理器
 *
 * @author newcityman
 * @date 2019/11/28 - 23:21
 */
public class SysExceptionResolver implements HandlerExceptionResolver {
 @Override
 public ModelAndView resolveException(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception ex) {
 SysExecepiton e = null;
 if (ex instanceof SysExecepiton) {
 e = (SysExecepiton) ex;
 } else {
 e = new SysExecepiton("系统维护中.......");
 }
 ModelAndView mv = new ModelAndView();
 mv.addObject("errorMsg", e.getMessage());
 mv.setViewName("error");
 return mv;
 }
}

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

 <!--指定spring扫描的包-->
 <context:component-scan base-package="com.hope"></context:component-scan>
 <!--视图解析器-->
 <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
 <property name="prefix" value="/WEB-INF/pages/"/>
 <property name="suffix" value=".jsp"/>
 </bean>

 <!-- 配置文件解析器对象,处理文件上传-->
 <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
 <property name="maxUploadSize" value="10485760"></property>
 </bean>
 <!-- 指定前端控制器哪些资源不拦截-->
 <!--前端控制器，哪些静态资源不拦截-->
 <mvc:resources location="/css/" mapping="/css/**"/>
 <mvc:resources location="/images/" mapping="/images/**"/>
 <mvc:resources location="/js/" mapping="/js/**"/>

 <!--配置异常处理器-->
 <bean id="sysExceptionResolver" class="com.hope.exception.SysExceptionResolver"></bean>
 <!--开启springmvc框架注解的支持,包含开启处理器映射器和处理器适配器-->
 <mvc:annotation-driven />
</beans>

<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<html>
<head>
 <title>Title</title>
</head>
<body>
 ${errorMsg}
</body>
</html>

springmvc中的异常处理方法

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