1.为当前Controller配置错误处理
在当前控制器中通过注解@ExceptionHandler配置，当该Controller出现异常时，跳转到指定的页面（my01err.jsp）
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
@RequestMapping("/my01")
public class MyController01 {
@ExceptionHandler
public String myExceptionHandler(Exception e){
System.out.println("记录异常日志..."+e);
return "my01err";
}
@RequestMapping("/test01.action")
public void test01(){
int i = 1/0;
}
}
my01err.jsp中的代码
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>my01err.jsp</title>
</head>
<body>
服务器出错了哦~~~亲~~~~~~~
</body>
</html>
测试结果
2. 注解方式配置全局的错误处理
编写类MyGlobalExcpetionHandler，在该类上标注@ControllerAdvice，处理方法上标注@ExceptionHandler
@ControllerAdvice
public class MyGlobalExcpetionHandler {
@ExceptionHandler
public String MyGExceptionHandler(Exception e){
System.out.println("全局异常日志....."+e);
return "mygerr";
}
}
测试类
@Controller
@RequestMapping("/my02")
public class MyController02 {
@RequestMapping("/test01.action")
public void test01(){
String str = null;
str.toUpperCase();
}
}
测试结果
3. 配置文件方式配置全局错误处理
在springmvc.xml中配置
空指针的配置跳转到nullerr.jsp io的跳转到ioerr.jsp 也能配置所以异常统一跳转到gerr
<?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: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 https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!--配置包扫描-->
<context:component-scan base-package="cn.tedu.web"/>
<!--配置注解方式mvc-->
<mvc:annotation-driven/>
<!--配置视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
<!--全局错误处理-->
<bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
<property name="exceptionMappings">
<props>
<prop key="java.lang.NullPointerException">nullerr</prop>
<prop key="java.io.IOException">ioerr</prop>
<prop key="java.lang.Throwable">gerr</prop>
</props>
</property>
</bean>
</beans>
测试正常
