通过ActionContext获取Map类型的request、session和application

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index.jsp：

<%@ page language="java" import="java.util.*"contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><script language="JavaScript" src="JS/AjaxRequest.js"></script><script language="JavaScript"></script><title>起始页</title></head><body><a href="test_.html">Map类型的request、session、application</a></body></html>

success.jsp：

<%@ page language="java" autoFlush="true"contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><%@ taglib uri="/struts-tags" prefix="s"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>成功提示页面</title></head><body>request范围内的info值：<font color="red"><%=request.getAttribute("info")%></font><br> session范围内的info值：<font color="red"><%=session.getAttribute("info")%></font><br> application范围内的info值：<font color="red"><%=application.getAttribute("info")%></font></body></html>

TestAction：

package com.home.web.action;import java.util.Map;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;public class TestAction extends ActionSupport {    /** serialVersionUID. */    private static final long serialVersionUID = 1L;    private Map<String, Object> request;    private Map<String, Object> session;    private Map<String, Object> application;    @SuppressWarnings("unchecked")    public TestAction() {        ActionContext context = ActionContext.getContext();        request = (Map<String, Object>) context.get("request");        session = context.getSession();        application = context.getApplication();    }    @Override    public String execute() throws Exception {        String info = "明日科技";        request.put("info", info);        session.put("info", info);        application.put("info", info);        return SUCCESS;    }}

struts.xml配置：

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN"    "http://struts.apache.org/dtds/struts-2.1.dtd"><struts><constant name="struts.i18n.encoding" value="UTF-8" /><constant name="struts.devMode" value="false" /><constant name="struts.i18n.reload" value="true" /><constant name="struts.configuration.xml.reload" value="true" /><constant name="struts.ognl.allowStaticMethodAccess" value="true" /><constant name="struts.action.extension" value="html" /><!-- 声明包 --><package name="default" extends="struts-default" namespace="/"><action name="test_*" class="com.home.web.action.TestAction"method="{1}"><!-- 添加成功的映射页面 --><result name="success">/pages/success.jsp</result><!-- 修改成功的映射页面 --><result name="error">/pages/error.jsp</result></action></package></struts>

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