spring.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- 如果配置了组件扫描器,并且有静态资源相关配置,需加这个并且,如果没有静态资源相关配置,可以不加 -->
<!-- 注解驱动 -->
<mvc:annotation-driven/>
<!-- 注册组件扫描器 -->
<context:component-scan base-package="com.monkey1024.*"/>
<!-- 注册自定义异常处理器 -->
<bean class="com.monkey1024.myexception.MyExceptionResolver"/>
<!-- 异常处理 -->
<bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
<property name="exceptionMappings">
<props>
<!-- 这里可以添加多个自定义异常 -->
<prop key="com.monkey1024.myexception.MyException">error/myerror</prop>
</props>
</property>
<!-- 默认的异常跳转页面 -->
<property name="defaultErrorView" value="error/error"/>
<!-- 异常信息 ,在jsp页面中的el表达式可以直接获取value中的值-->
<property name="exceptionAttribute" value="ex"/>
</bean>
<!-- 方式三:解决静态资源无法访问的问题,添加下面标签即可-->
<!--
mapping:表示对该资源的请求,注意后面是两个*
location:静态资源所在的目录
-->
<mvc:resources mapping="/images/**" location="/images/"/>
<mvc:resources mapping="/css/**" location="/css/"/>
<!-- 外部视图解析器 -->
<bean class="org.springframework.web.servlet.view.BeanNameViewResolver"/>
<!-- 定义外部资源view对象 -->
<bean id="monkey1024" class="org.springframework.web.servlet.view.RedirectView">
<property name="url" value="http://www.monkey1024.com/"/>
</bean>
<!-- 内部视图解释类 需要放在controller上面-->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
<!-- 注册controller,
<bean id="/hello.do" class="com.monkey1024.controller.HelloSpringMVC" />
使用注解之后,就不用这个了 -->
</beans>
MyException.java
package com.monkey1024.myexception;
/*
* 自定义异常
*/
public class MyException extends Exception {
public MyException(){
super();
}
public MyException(String message){
super(message);
}
}
MyExceptionResover.java
package com.monkey1024.myexception;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.HandlerExceptionResolver;
import org.springframework.web.servlet.ModelAndView;
import com.monkey1024.myexception.MyException;
public class MyExceptionResolver implements HandlerExceptionResolver{
/*
* 只要在程序中有异常抛出,
* 那么就会执行该方法
*/
public ModelAndView resolveException(HttpServletRequest request,HttpServletResponse reponse,Object handler,Exception ex){
ModelAndView mv = new ModelAndView();
mv.addObject("ex",ex);
//设置默认异常处理界面
mv.setViewName("error/error");
if(ex instanceof MyException){
//记录日志
//设置跳转页面
mv.setViewName("error/myerror");
}else if(ex instanceof NullPointerException){
//记录日志
//....
}
return mv;
}
}
ExceptionController.java
package com.monkey1024.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import com.monkey1024.myexception.MyException;
/*
* 异常处理controller
*/
@Controller
public class ExceptionController {
@RequestMapping("myException.do")
public ModelAndView myException(String name) throws Exception{
ModelAndView mv = new ModelAndView();
if("jack".equals(name)){
//记录日志,或者做其他处理
throw new MyException("我的自定义异常");
}
if(!"jack".equals(name)){
throw new Exception("异常");
}
return mv;
}
}
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>
<title>Insert title here</title>
</head>
<body>
默认异常跳转的页面<br>
${ex }
</body>
</html>
myerror.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>
<title>Insert title here</title>
</head>
<body>
自定义异常跳转的页面<br>
${ex }
</body>
</html>