struts2前后台传值汇总-（1）ActionContext-map格式
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2022-05-18 12:14:15
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后台调用ActionContext中的getObject(),getSession(),getApplication() 获取request,session,application.
package struts.test.action;
import java.sql.SQLException;
import java.util.Map;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
/**
* 登录练习
* @author zk
*
*/
//public class LoginAction implements Action {
public class LoginAction extends ActionSupport {
//获取request对象
ActionContext context;
Map request1;
Map session1;
Map application1;
@Override
public String execute() throws Exception {
context = ActionContext.getContext();
request1 = (Map)context.get("request");
session1 = context.getSession();
application1 = context.getApplication();
request1.put("req", "request1属性");
session1.put("ses", "session1属性");
application1.put("app", "application1属性");
return SUCCESS;
}
}
前台2种方式获取（EL表达式和控制反转IOC）
<%@ page pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="s" %>
<%
String path = request.getContextPath();
%>
<html>
<head></head>
<body>
<h1>adminSuc</h1>
管理员页面
<br/><br/>
requset属性接受：<s:property value="#request.req"/> <br/>
session属性接受：<s:property value="#session.ses"/><br/>
application属性接受：<s:property value="#application.app"/><br/>
<br/>
=============================
<br/>
<br/><h1> 另外一种获取方法 ：</h1><br/>
requset属性接受：${requestScope.req}<br/>
session属性接受：${sessionScope.ses}<br/>
application属性接受：${applicationScope.app}<br/>
<br/>
<br/>
<a href="<%=path %>/login.jsp">返回</a>
</body>
</html>
