首先是STRUTS.XML的配置。重点在于配置文件：


<!-- struts2捕获action类异常 -->

        <global-results>

<result name="error">/error.jsp</result>

</global-results>

<global-exception-mappings>

<exception-mapping result="error" exception="java.lang.Exception"></exception-mapping>

</global-exception-mappings>


这样一块。



<?xml version="1.0" encoding="UTF-8" ?

><!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"> <struts> <!-- 採用注解的方式 --> <constant name="struts.enable.DynamicMethodInvocation" value="true" /> <constant name="struts.devMode" value="true" /> <package name="default" namespace="" extends="struts-default"> <!-- struts2捕获action类异常 --> <global-results> <result name="error">/error.jsp</result> </global-results> <global-exception-mappings> <exception-mapping result="error" exception="java.lang.Exception"></exception-mapping> </global-exception-mappings> <action name="link" class="com.test.action.LoginAction"> <result>/result.jsp</result> </action> <action name="linkIOC" class="com.test.action.LoginActionIOC"> <result>/result.jsp</result> </action> </package> <!-- Add packages here --> </struts>

測试类

package com.test.action;

import java.util.Map;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;

public class LoginAction extends ActionSupport{

  /**
   * 
   */
  private static final long serialVersionUID = 1L;
  
  private Map request;
  private Map session;
  private Map application;
  
  public LoginAction()
  {
    System.out.println("loginaction构造函数！");
    request=(Map) ActionContext.getContext().get("request");
    session=ActionContext.getContext().getSession();
    application=ActionContext.getContext().getApplication();
  }
  
  public String execute()
  {
    //System.out.println(request);
    //System.out.println(session);
    //System.out.println(application);
    
    int i=100/0;/*这个地方会抛出异常，默认情况下struts2是不会捕获异常，直接抛出*/
    
    request.put("msg", "欢迎你！");
    return SUCCESS;
  }

}


输出结果

struts2捕获action类异常_apache