struts2访问web元素

struts.xml

<span style="font-size:18px;"><?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>     <constant name="struts.devMode" value="true" />     <constant name="struts.enable.DynamicMethodInvocation" value="true" />     <!--通过使用struts.i18n.encoding=UTF-8来解决中文乱码问题  -->     <constant name="struts.i18n.encoding=UTF-8" value="true"/><package name="login" namespace="/login" extends="struts-default">        <action name="login*" class="com.dqpi.eonline.LoginAction{1}">            <result>            /User_login_success.jsp            </result>        </action>    </package></struts></span>

LoginAction1.java

<span style="font-size:18px;">package com.dqpi.eonline;import java.util.Map;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;public class LoginAction1 extends ActionSupport {private static final long serialVersionUID = 1L;<span style="color:#ff0000;">private Map request;private Map session;private Map application;</span>/** * 为request,session,application赋值 */public LoginAction1() {<span style="color:#ff0000;">request = (Map) ActionContext.getContext().get("request");session = ActionContext.getContext().getSession();application = ActionContext.getContext().getApplication();</span>}@Overridepublic String execute() throws Exception {<span style="color:#ff0000;">request.put("r1", "r1");session.put("a1", "a1");application.put("s1", "s1");</span>return SUCCESS;}}</span>

LoginAction2.java

<span style="font-size:18px;">package com.dqpi.eonline;import java.util.Map;import org.apache.struts2.interceptor.ApplicationAware;import org.apache.struts2.interceptor.RequestAware;import org.apache.struts2.interceptor.SessionAware;import com.opensymphony.xwork2.ActionSupport;public class LoginAction2 extends ActionSupport implements RequestAware,SessionAware ,ApplicationAware{private static final long serialVersionUID = 1L;<span style="color:#ff0000;">private Map<String, Object> request;private Map<String, Object> session;private Map<String, Object> application;</span>public String execute() {<span style="color:#ff0000;">request.put("r1", "r1");session.put("a1", "a1");application.put("s1", "s1");return SUCCESS;</span>}@Override<span style="background-color: rgb(255, 255, 0);">public void setSession(Map<String, Object> session) {this.session = session;}@Overridepublic void setRequest(Map<String, Object> request) {this.request = request;}@Overridepublic void setApplication(Map<String, Object> application) {this.application = application;}</span>}</span>

LoginAction3.java

<span style="font-size:18px;">package com.dqpi.eonline;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 static final long serialVersionUID = 1L;<span style="color:#ff0000;">private HttpServletRequest request;private HttpSession session;private ServletContext application;</span>@Overridepublic String execute() throws Exception {<span style="color:#ff0000;">request.setAttribute("r1", "r1");session.setAttribute("a1", "a1");application.setAttribute("s1", "s1");</span>return SUCCESS;}public LoginAction3() {<span style="color:#ff0000;">request = ServletActionContext.getRequest();session = request.getSession();application = session.getServletContext();</span>}}</span>

LoginAction4.java

<span style="font-size:18px;">package com.dqpi.eonline;import javax.servlet.ServletContext;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpSession;import org.apache.struts2.interceptor.ServletRequestAware;import com.opensymphony.xwork2.ActionSupport;public class LoginAction4 extends ActionSupport implements ServletRequestAware {/** *  */private static final long serialVersionUID = 1L;<span style="color:#ff0000;">private HttpServletRequest request;private HttpSession session;private ServletContext application;</span>@Overridepublic String execute() throws Exception {<span style="color:#ff0000;">request.setAttribute("r1", "r1");session.setAttribute("a1", "a1");application.setAttribute("s1", "s1");</span>return SUCCESS;}@Overridepublic void setServletRequest(HttpServletRequest request) {<span style="color:#ff0000;">this.request = request;this.session = request.getSession();this.application = session.getServletContext();</span>}}</span>

index.jsp

<span style="font-size:18px;"><%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>  <!--此处使用了myeclipse中经常使用的basepath  -->    <base href="<%=basePath%>">        <title>My JSP 'index.jsp' starting page</title>    <meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0">    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page"><!--<link rel="stylesheet" type="text/css" href="styles.css">-->  </head>    <body><span style="color:#ff0000;"><form name="f" action="user/user!add" method="post">姓名:<input type="text" name="name"/>密码:<input type="password" name="password"/><br/><input type="button" value="submit1" onclick="javascript:document.f.action='login/login1';document.f.submit();"/><br/><input type="button" value="submit2" onclick="javascript:document.f.action='login/login2';document.f.submit();"/><br/><input type="button" value="submit3" onclick="javascript:document.f.action='login/login3';document.f.submit();"/><br/><input type="button" value="submit4" onclick="javascript:document.f.action='login/login4';document.f.submit();"/></form></span>  </body></html></span>

user_login_success.jsp

<span style="font-size:18px;"><%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><span style="color:#ff0000;"><%@taglib uri="/struts-tags" prefix="s" %></span><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>    <base href="<%=basePath%>">        <title>user_add_success.jsp</title>    <meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0">    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page"><!--<link rel="stylesheet" type="text/css" href="styles.css">-->  </head>    <body>    user login success <br>    <span style="color:#ff0000;"><s:property value="#request.r1"/>|<%=request.getAttribute("r1") %><br/>    <s:property value="#session.a1"/>|<%=session.getAttribute("a1") %><br/>    <s:property value="#application.s1"/>|<%=application.getAttribute("s1")%><br/>    <s:property value="#attr.r1"/><br/>    <s:property value="#attr.s1"/><br/>    <s:property value="#attr.a1"/><br/>    <s:debug></s:debug></span>  </body></html></span>