访问web元素(3)—取得真实类型—依赖容器

package com.zchen.struts2.user.action;import javax.servlet.ServletContext;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpSession;import org.apache.struts2.ServletActionContext;import com.opensymphony.xwork2.ActionSupport;public class LoginAction3 extends ActionSupport {private HttpServletRequest request;private HttpSession session;private ServletContext application;public LoginAction3() {request = ServletActionContext.getRequest();session = request.getSession();application = session.getServletContext();}public String execute() {request.setAttribute("r1", "r1");session.setAttribute("s1", "s1");application.setAttribute("a1", "a1");return SUCCESS; }}

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<form name="f" action="" method="post">用户名：<input type="text" name="name"/>密码：<input type="text" name="password"/><br /><input type="button" value="submit1" onclick="javascript:document.f.action='login/login1';document.f.submit();" /><input type="button" value="submit2" onclick="javascript:document.f.action='login/login2';document.f.submit();" /><input type="button" value="submit3" onclick="javascript:document.f.action='login/login3';document.f.submit();" /><input type="button" value="submit4" onclick="javascript:document.f.action='login/login4';document.f.submit();" /></form>

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"    "http://struts.apache.org/dtds/struts-2.0.dtd"><struts>    <constant name="struts.devMode" value="true" />    <package name="login" extends="struts-default" namespace="/login">        <action name="login*" class="com.zchent.struts2.user.action.LoginAction{1}">            <result>/user_login_success.jsp</result>        </action>    </package></struts>

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