第01步：编写bean类
package com.self.bean; import java.util.Date; public class User { private Date birthday = null; public Date getBirthday() { System.out.println("获得-User：" + birthday); return birthday; } public void setBirthday(Date birthday) { System.out.println("设置-User：" + birthday); this.birthday = birthday; } }
第02步：编写action类
package com.self.action; import javax.servlet.ServletContext; import javax.servlet.http.HttpServletRequest; import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionContext; import com.self.bean.User; public class ThreeScopes { private User lilan; public ThreeScopes() { } /**向3种范围加入值**/ public String showdata() { /**方式01**/ ActionContext ac= ActionContext.getContext(); ac.put("request", "请求范围01");//向request范围加入值 ac.getSession().put("session", "会话范围01");//向Session范围加入值 ac.getApplication().put("app", "应用范围01");//向应用范围加入值 /**方式02**/ ServletContext sc=ServletActionContext.getServletContext();//应用范围 HttpServletRequest request=ServletActionContext.getRequest();//会话范围 request.setAttribute("request2", "请求范围2"); request.getSession().setAttribute("session2", "会话范围2"); sc.setAttribute("app2", "应用范围2"); return "tsuccess"; } public User getLilan() { return lilan; } public void setLilan(User lilan) { this.lilan = lilan; } }
第03步：配置struts.xml
<?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.action.extension" value="do"/> <package name="transform" namespace="/" extends="struts-default"> <action name="list_*" class="com.self.action.ThreeScopes" method="{1}"> <result name="tsuccess"> /outdata.jsp </result> </action> </package> </struts>
第04步：编写访问action界面
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<body>
<form action="list_showdata.do">
<BR>
<input type="submit" value="访问action，显示结果">
</form>
</body>
</html>
第05步：编写数据显示界面
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <body> 访问不同范围属性值01：<BR> ${applicationScope.app }<BR> ${sessionScope.session }<BR> ${requestScope.request }<BR><BR><BR> 访问不同范围属性值02：<BR> ${applicationScope.app2 }<BR> ${sessionScope.session2 }<BR> ${requestScope.request2 }<BR> </body> </html>