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Struts2中解耦的方式访问appliactionContext对象

2016-11-16 20:45 441 查看

1：jsp 超链接

<%@ page language="java" contentType="text/html;charset=UTF-8" 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 'userList.jsp' starting page</title>

<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<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">

</head>

<body>

<a href="<%=basePath%>/TestActionContext.action?name=解耦">Test ActionContext</a>

</body>

</html>

2：Action

package com.study;

import java.util.Map;

import com.opensymphony.xwork2.ActionContext;

/**

* 与Servlet API解耦合的测试类

* @author Administrator

*

*/

public class TestAction {

public String execute()

{
//获取application对应的Map,并向其中添加一个属性
//ActionContext是Action的上下文对象，可以从中获取到所有Action需要的对象
ActionContext actionContext=ActionContext.getContext();
Map<String,Object> applicationMap=actionContext.getApplication();
applicationMap.put("aplicationKey", "applicationValue");
//session
//request
//获取请求参数对应的Map,并获取指定的参数值
return "success";

}

}

3：jsp

<%@ page language="java" contentType="text/html;charset=UTF-8" 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 'userList.jsp' starting page</title>

<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<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">

</head>

<body>

application:${applicationScope.aplicationKey}

</body>

</html>

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