Web中request,session,application的获取（1）
jsp请求
<%@ 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> <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>取得Map类型request,session,application,真实类型 HttpServletRequest, HttpSession, ServletContext的引用:<ol><li>前三者：依赖于容器</li><li>前三者：IOC</li> (只用这种)<li>后三者：依赖于容器</li><li>后三者：IOC</li></ol><br /><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> </body></html>?
<?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.i18n.encoding" value="UTF-8"></constant><constant name="struts.ognl.allowStaticMethodAccess" value="true"></constant> <package name="login" extends="struts-default" namespace="/login"> <action name="login*" name="code">package com.lbx.action;import java.util.Map;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;@SuppressWarnings("serial")public class LoginAction1 extends ActionSupport{private Map request;private Map session;private Map application;public LoginAction1() {request = (Map)ActionContext.getContext().get("request");session = ActionContext.getContext().getSession();application = ActionContext.getContext().getApplication();}public String execute() {request.put("r1", "r1");session.put("s1", "s1");application.put("a1", "a1");return SUCCESS; }}? package com.lbx.action;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;@SuppressWarnings("serial")public class LoginAction2 extends ActionSupport implements RequestAware,SessionAware,ApplicationAware{private Map<String, Object> request;private Map<String, Object> session;private Map<String, Object> application;public String execute() {request.put("r1", "r1");session.put("s1", "s1");application.put("a1", "a1");return SUCCESS; }public void setRequest(Map<String, Object> request) {// TODO Auto-generated method stubthis.request = request;}public void setSession(Map<String, Object> session) {// TODO Auto-generated method stubthis.session = session;}public void setApplication(Map<String, Object> application) {// TODO Auto-generated method stubthis.application = application;}}?package com.lbx.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;@SuppressWarnings("serial")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; }}?package com.lbx.action;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 HttpServletRequest request;private HttpSession session;private ServletContext application;public void setServletRequest(HttpServletRequest request) {// TODO Auto-generated method stubthis.request = request;this.session = request.getSession();application = session.getServletContext();}public String execute() {request.setAttribute("r1", "r1");session.setAttribute("s1", "s1");application.setAttribute("a1", "a1");return SUCCESS; }}??