struts2访问web元素

struts.xml

<span style="font-size:18px;"><?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">

<struts>
<constant name="struts.devMode" value="true" />
<constant name="struts.enable.DynamicMethodInvocation" value="true" />
<!--通过使用struts.i18n.encoding=UTF-8来解决中文乱码问题  -->
<constant name="struts.i18n.encoding=UTF-8" value="true"/>
<package name="login" namespace="/login" extends="struts-default">
<action name="login*" class="com.dqpi.eonline.LoginAction{1}">
<result>
/User_login_success.jsp
</result>
</action>
</package>
</struts>
</span>

LoginAction1.java

<span style="font-size:18px;">package com.dqpi.eonline;

import java.util.Map;

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

public class LoginAction1 extends ActionSupport {

private static final long serialVersionUID = 1L;

<span style="color:#ff0000;">private Map request;
private Map session;
private Map application;</span>

/**
* 为request,session,application赋值
*/
public LoginAction1() {
<span style="color:#ff0000;">request = (Map) ActionContext.getContext().get("request");
session = ActionContext.getContext().getSession();
application = ActionContext.getContext().getApplication();</span>
}

@Override
public String execute() throws Exception {
<span style="color:#ff0000;">request.put("r1", "r1");
session.put("a1", "a1");
application.put("s1", "s1");</span>
return SUCCESS;
}
}
</span>

LoginAction2.java

<span style="font-size:18px;">package com.dqpi.eonline;

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;

public class LoginAction2 extends ActionSupport implements RequestAware,
SessionAware ,ApplicationAware{

private static final long serialVersionUID = 1L;

<span style="color:#ff0000;">private Map<String, Object> request;
private Map<String, Object> session;
private Map<String, Object> application;</span>

public String execute() {
<span style="color:#ff0000;">request.put("r1", "r1");
session.put("a1", "a1");
application.put("s1", "s1");
return SUCCESS;</span>
}

@Override
<span style="background-color: rgb(255, 255, 0);">public void setSession(Map<String, Object> session) {
this.session = session;
}

@Override
public void setRequest(Map<String, Object> request) {
this.request = request;
}

@Override
public void setApplication(Map<String, Object> application) {
this.application = application;
}</span>

}
</span>

LoginAction3.java

<span style="font-size:18px;">package com.dqpi.eonline;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

public class LoginAction3 extends ActionSupport {

private static final long serialVersionUID = 1L;

<span style="color:#ff0000;">private HttpServletRequest request;
private HttpSession session;
private ServletContext application;
</span>
@Override
public String execute() throws Exception {
<span style="color:#ff0000;">request.setAttribute("r1", "r1");
session.setAttribute("a1", "a1");
application.setAttribute("s1", "s1");</span>
return SUCCESS;
}

public LoginAction3() {
<span style="color:#ff0000;">request = ServletActionContext.getRequest();
session = request.getSession();
application = session.getServletContext();</span>
}

}
</span>

LoginAction4.java

<span style="font-size:18px;">package com.dqpi.eonline;

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 static final long serialVersionUID = 1L;
<span style="color:#ff0000;">private HttpServletRequest request;
private HttpSession session;
private ServletContext application;</span>

@Override
public String execute() throws Exception {
<span style="color:#ff0000;">request.setAttribute("r1", "r1");
session.setAttribute("a1", "a1");
application.setAttribute("s1", "s1");</span>
return SUCCESS;
}
@Override
public void setServletRequest(HttpServletRequest request) {
<span style="color:#ff0000;">this.request = request;
this.session = request.getSession();
this.application = session.getServletContext();</span>
}

}
</span>

index.jsp

<span style="font-size:18px;"><%@ 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>
<!--此处使用了myeclipse中经常使用的basepath  -->
<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>
<span style="color:#ff0000;"><form name="f" action="user/user!add" method="post">
姓名:<input type="text" name="name"/>
密码:<input type="password" name="password"/><br/>
<input type="button" value="submit1" onclick="javascript:document.f.action='login/login1';document.f.submit();"/><br/>
<input type="button" value="submit2" onclick="javascript:document.f.action='login/login2';document.f.submit();"/><br/>
<input type="button" value="submit3" onclick="javascript:document.f.action='login/login3';document.f.submit();"/><br/>
<input type="button" value="submit4" onclick="javascript:document.f.action='login/login4';document.f.submit();"/>
</form></span>
</body>
</html>
</span>

user_login_success.jsp

<span style="font-size:18px;"><%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<span style="color:#ff0000;"><%@taglib uri="/struts-tags" prefix="s" %></span>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">

<title>user_add_success.jsp</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>
user login success <br>
<span style="color:#ff0000;"><s:property value="#request.r1"/>|<%=request.getAttribute("r1") %><br/>
<s:property value="#session.a1"/>|<%=session.getAttribute("a1") %><br/>
<s:property value="#application.s1"/>|<%=application.getAttribute("s1")%><br/>
<s:property value="#attr.r1"/><br/>
<s:property value="#attr.s1"/><br/>
<s:property value="#attr.a1"/><br/>
<s:debug></s:debug></span>
</body>
</html>
</span>