1.爲當前Controller配置錯誤處理
在當前控制器中通過註解@ExceptionHandler配置，當該Controller出現異常時，跳轉到指定的頁面（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("記錄異常日誌..."+e);
return "my01err";
}
@RequestMapping("/test01.action")
public void test01(){
int i = 1/0;
}
}
my01err.jsp中的代碼
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>my01err.jsp</title>
</head>
<body>
服務器出錯了哦~~~親~~~~~~~
</body>
</html>
測試結果
2. 註解方式配置全局的錯誤處理
編寫類MyGlobalExcpetionHandler，在該類上標註@ControllerAdvice，處理方法上標註@ExceptionHandler
@ControllerAdvice
public class MyGlobalExcpetionHandler {
@ExceptionHandler
public String MyGExceptionHandler(Exception e){
System.out.println("全局異常日誌....."+e);
return "mygerr";
}
}
測試類
@Controller
@RequestMapping("/my02")
public class MyController02 {
@RequestMapping("/test01.action")
public void test01(){
String str = null;
str.toUpperCase();
}
}
測試結果
3. 配置文件方式配置全局錯誤處理
在springmvc.xml中配置
空指針的配置跳轉到nullerr.jsp io的跳轉到ioerr.jsp 也能配置所以異常統一跳轉到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">
<!--配置包掃描-->
<context:component-scan base-package="cn.tedu.web"/>
<!--配置註解方式mvc-->
<mvc:annotation-driven/>
<!--配置視圖解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
<!--全局錯誤處理-->
<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>
測試正常
