Action的搭建及application、request、Session的运用多种方法

 <%@ page language="java" contentType="text/html; charset=UTF-8"

     pageEncoding="UTF-8"%>

 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

 <html>

 <head>

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

 <title>Insert title here</title>

 </head>

 <body>

 添加测试的web资源

 <%

 application.setAttribute("app1", "测试的application")  ;

 application.setAttribute("app12", "测试的application2")  ;

 session.setAttribute("ses1", "测试的Session") ;

 request.setAttribute("req1", "测试的request") ;

 %>

 <br>

 <a href="testAction.action?user=tom" >测试Action类访问web资源</a>

 <br><br><br>

 <a href="testActionAware.action?user=tom&user=rose" >以Aware方式测试Action类访问web资源</a>

 <br><br><br>

 <a href="testServletAction.action?user=tom" >访问原生web资源</a>

 <br><br><br>

 <a href="testServletAware.action?user=tom" >以接口方式访问原生web资源</a>

 </body>

 </html>

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

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

<title>Insert title here</title>

</head>

<body>

显示application的属性

<br>

app1=${app1 }

<br>

app12=${app12 }

<br>

appx=${applicationScope.appx }

<br><br>

显示Session的属性

<br><br>

ses1=${ses1 }

<br><br>

ses2=${ses2 }

<br><br>

req1=${req1 }

<br><br>

req2=${req2 }

<br><br>

<%

String user = request.getParameter("user") ;

Object haha = session.getAttribute("ses1") ;

out.print("user = "+user) ;

out.print("<br><br> ") ;

out.print("haha = "+haha.toString()) ;

String ww = request.getParameter("ww") ;

%>

<br>

<%out.print("ww= "+ww) ; %>

</body>

</html>

Struts

<?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>

   <!-- 设置过滤的扩展名 -->

   <constant name="struts.action.extension" value="do,action,,"></constant>

    <!-- 定义包 -->

    <package name="index" extends="struts-default" namespace="">

            <action name="testAction" class="com.hanqi.action.TestAction" method="testWeb">

                    <result type="redirect">test1.jsp</result>

            </action>

            <!-- 解耦的接口方式 -->

            <action name="testActionAware" class="com.hanqi.TestActionAware" method="testAware">

                    <result >test1.jsp</result>

            </action>

            <!-- 以ServletActionContext方式 -->

            <action name="testServletAction" class="com.hanqi.action.TestServletAction"

                            method="testServletAction">

                    <result >test1.jsp</result>

            </action>

            <action name="testServletAware" class="com.hanqi.action.TestServletActionAware"

                        method="testServletAware">

                        <result >test1.jsp</result>

                        </action>

    </package>

</struts>

 package com.hanqi.action;

 import javax.servlet.ServletContext;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.http.HttpSession;

 import org.apache.struts2.interceptor.ServletRequestAware;

 import org.apache.struts2.util.ServletContextAware;

 public class TestServletActionAware

         implements ServletRequestAware, ServletContextAware {

     private ServletContext sc ;

     private HttpServletRequest hsr ;

     private HttpSession hs ;

     @Override

     public void setServletContext(ServletContext arg0) {

         // TODO 自动生成的方法存根

         sc = arg0 ;

     }

     @Override

     public void setServletRequest(HttpServletRequest arg0) {

         // TODO 自动生成的方法存根

         hsr = arg0 ;

         hs = arg0.getSession() ;

     }

     public String testServletAware()

     {

         System.out.println("app1 = " + sc.getAttribute("app1"));

         sc.setAttribute("appx", "新的app");

         System.out.println("ses1 = " + hs.getAttribute("ses1"));

         hs.setAttribute("ses2", "新的ses2");

         hsr.setAttribute("req2", "新的req2");

         System.out.println("user = " +hsr.getParameter("user"));

         return "success" ;

     }

 }

 package com.hanqi.action;

 import javax.servlet.ServletContext;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.http.HttpSession;

 import org.apache.struts2.ServletActionContext;

 public class TestServletAction

 {

     public String testServletAction()

     {

         //访问原生的web资源

         //1得到ServletContext，相当于application

         ServletContext sc = ServletActionContext.getServletContext();

         System.out.println("app1 = " + sc.getAttribute("app1"));

         sc.setAttribute("appx", "原生方式放入的内容");

         //2访问Session

         HttpServletRequest hsr = ServletActionContext.getRequest() ;

         HttpSession hs = hsr.getSession() ;

         System.out.println("ses1 = " + hs.getAttribute("ses1"));

         hs.setAttribute("ses2", "原生方式放入的Session");

         //3访问request

         System.out.println("req1 = " + hsr.getAttribute("req1"));

         hsr.setAttribute("req2", "原生方式放入的request");

         //4访问parameter

         System.out.println("user1 = " +hsr.getParameter("user") );

         System.out.println("user2 = " +hsr.getParameter("user") );

         return "success" ;

     }

 }

package com.hanqi.action;

import java.util.Map;

import com.opensymphony.xwork2.ActionContext;

//解耦方式

public class TestAction

{

    //

    public String testWeb()

    {

        System.out.println("hah");

        //单例

        //Action实例的上下文对象

        ActionContext ac = ActionContext.getContext() ;

        //1获取application资源

        Map<String, Object> mapApp = ac.getApplication() ;

        System.out.println("app1 = " + mapApp.get("app1"));

        System.out.println("app12 = " + mapApp.get("app12"));

        //放入新的键值对

        mapApp.put("appx", "新放入的application") ;

        //2.获取Session的资源

        Map<String, Object> mapses = ac.getSession() ;

        System.out.println("ses1=" + mapses.get("ses1"));

        //放入新的键值对

        mapses.put("ses2", "新放入的session") ;

        //移除

        mapses.remove("ses1") ;

        //3获取request资源

        Map<String, Object> mapreq = (Map<String, Object>) ac.get("request");

        System.out.println("req1 = " + mapreq.get("req1"));

        //放入新的键值对

        mapreq.put("req2", "新放入的request") ;

        //4直接获取传递的参数

        Map<String, Object> mappar = ac.getParameters() ;

        //参数值被封装成String数组

        String[ ] array = (String[ ])mappar.get("user") ;

        for(String s : array)

        {

            System.out.println("user = " + s);

        }

        //放入

        mappar.put("ww", new String[ ]{("qweqeq")}) ;

        return "success" ;

    }

}

package com.hanqi;

import java.util.Map;

import org.apache.struts2.interceptor.ApplicationAware;

import org.apache.struts2.interceptor.ParameterAware;

import org.apache.struts2.interceptor.RequestAware;

import org.apache.struts2.interceptor.SessionAware;

public class TestActionAware implements ApplicationAware , SessionAware, RequestAware, ParameterAware{

    private Map<String, Object> mapApp ;

    private Map<String, Object> mapses ;

    private Map<String, Object> mapreq ;

    private Map<String, String[ ]> mappar ;

    //实现ApplicationAware接口的方法

    //提供给Struts2进行调用 ， 放入Application的数据集合

    @Override

    public void setApplication(Map<String, Object> arg0) {

        // TODO 自动生成的方法存根

        //接收

        mapApp = arg0 ;

    }

    public String testAware()

    {

        //1访问application

        System.out.println("app1 = " + mapApp.get("app1"));

        mapApp.put("app12", "以Aware方式放入的application") ;

        //2访问Session

        //System.out.println("ses1 = " + mapses.get("ses1"));

        mapses.put("ses2", "以Aware方式放入的Session") ;

        //3访问request

        System.out.println("req1 = " + mapreq.get("req1"));

        mapreq.put("req2", "以Aware方式放入的request") ;

        //4 访问Parameter

        String[ ] str = mappar.get("user") ;

        for(String t : str)

        {

                System.out.println("user = " + t);

        }

        return "success" ;

    }

    @Override

    public void setSession(Map<String, Object> arg0) {

        // TODO 自动生成的方法存根

        mapses = arg0 ;

    }

    @Override

    public void setRequest(Map<String, Object> arg0) {

        // TODO 自动生成的方法存根

        mapreq = arg0 ;

    }

    @Override

    public void setParameters(Map<String, String[]> arg0) {

        // TODO 自动生成的方法存根

        mappar = arg0 ;

    }

}

ion的

Action的搭建及application、request、Session的运用 多种方法

Action的搭建及application、request、Session的运用多种方法