访问web元素(1)—取得Map类型—依赖容器

最新推荐文章于 2025-03-23 08:41:28 发布

原创最新推荐文章于 2025-03-23 08:41:28 发布 · 128 阅读

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#Web #Struts #JavaScript #F# #Apache #ViewUI

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本文介绍了一个使用Struts2框架实现的简单登录示例，包括了如何在Action中操作request、session及application三个作用域的数据，并展示了相应的配置文件及页面代码。

package com.zchen.struts2.user.action;

import java.util.Map;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;

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; 
	}
	
	
}

<body>
取得Map类型request,session,application<li>前三者：依赖于容器</li>
<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>

<?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.devMode" value="true" />
    <package name="login" extends="struts-default" namespace="/login">
        <action name="login*" class="com.zchen.struts2.user.action.LoginAction{1}">
            <result>/user_login_success.jsp</result>
        </action>
    </package>
</struts>

<body>
	User Login Success!
	<br />
	<s:property value="#request.r1"/> | <%=request.getAttribute("r1") %> <br />
	<s:property value="#session.s1"/> | <%=session.getAttribute("s1") %> <br />
	<s:property value="#application.a1"/> | <%=application.getAttribute("a1") %> <br />
	<s:debug></s:debug>
	<br />
</body>