zoukankan html css js c++ java

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

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5 <head>
 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10 添加测试的web资源
11 <%
12 application.setAttribute("app1", "测试的application")  ;
13 application.setAttribute("app12", "测试的application2")  ;
14 session.setAttribute("ses1", "测试的Session") ;
15 
16 request.setAttribute("req1", "测试的request") ;
17 
18 
19 %>
20 <br>
21 <a href="testAction.action?user=tom" >测试Action类访问web资源</a>
22 <br><br><br>
23 <a href="testActionAware.action?user=tom&user=rose" >以Aware方式测试Action类访问web资源</a>
24 <br><br><br>
25 <a href="testServletAction.action?user=tom" >访问原生web资源</a>
26 <br><br><br>
27 <a href="testServletAware.action?user=tom" >以接口方式访问原生web资源</a>
28 </body>
29 </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>

 1 package com.hanqi.action;
 2 
 3 import javax.servlet.ServletContext;
 4 import javax.servlet.http.HttpServletRequest;
 5 import javax.servlet.http.HttpSession;
 6 
 7 import org.apache.struts2.interceptor.ServletRequestAware;
 8 import org.apache.struts2.util.ServletContextAware;
 9 
10 public class TestServletActionAware
11         implements ServletRequestAware, ServletContextAware {
12 
13     private ServletContext sc ;
14     private HttpServletRequest hsr ;
15     private HttpSession hs ;
16     
17     @Override
18     public void setServletContext(ServletContext arg0) {
19         // TODO 自动生成的方法存根
20         sc = arg0 ;
21     }
22 
23     @Override
24     public void setServletRequest(HttpServletRequest arg0) {
25         // TODO 自动生成的方法存根
26         
27         hsr = arg0 ;
28         
29         hs = arg0.getSession() ;
30         
31     }
32 
33     public String testServletAware()
34     {
35         System.out.println("app1 = " + sc.getAttribute("app1"));
36         
37         sc.setAttribute("appx", "新的app");
38         
39         System.out.println("ses1 = " + hs.getAttribute("ses1"));
40         
41         hs.setAttribute("ses2", "新的ses2");
42         
43         hsr.setAttribute("req2", "新的req2");
44         
45         System.out.println("user = " +hsr.getParameter("user"));
46         
47     
48         
49         return "success" ;
50     }
51     
52     
53 }

 1 package com.hanqi.action;
 2 
 3 import javax.servlet.ServletContext;
 4 import javax.servlet.http.HttpServletRequest;
 5 import javax.servlet.http.HttpSession;
 6 
 7 import org.apache.struts2.ServletActionContext;
 8 
 9 public class TestServletAction
10 {
11             
12     public String testServletAction()
13     {
14         //访问原生的web资源
15         
16         //1得到ServletContext，相当于application 
17         ServletContext sc = ServletActionContext.getServletContext();
18         
19         System.out.println("app1 = " + sc.getAttribute("app1"));
20          
21         sc.setAttribute("appx", "原生方式放入的内容");
22             
23         //2访问Session
24         HttpServletRequest hsr = ServletActionContext.getRequest() ;
25         
26         HttpSession hs = hsr.getSession() ;
27         
28         System.out.println("ses1 = " + hs.getAttribute("ses1"));
29         
30         hs.setAttribute("ses2", "原生方式放入的Session");
31         
32         //3访问request
33         System.out.println("req1 = " + hsr.getAttribute("req1"));
34         
35         hsr.setAttribute("req2", "原生方式放入的request");
36         
37         //4访问parameter
38         System.out.println("user1 = " +hsr.getParameter("user") );
39         System.out.println("user2 = " +hsr.getParameter("user") );
40         
41         return "success" ;
42     }
43 }

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 ;
    }
    
}

查看全文

相关阅读:
Python常用函数
 MySQL常用操作
 Python与JAVA的异同
 token
用户cookie和会话session、sessionID的关系
 Jenkins应用
 Python3 logging模块
 python 多线程threading模块
 引用的声明周期结束时，并不会调用析构函数，只有本体的声明周期结束时，才会调用析构函数
 行为像指针的类的对象每次作为参数传入函数或者传出函数时都要小心

原文地址：https://www.cnblogs.com/20gg-com/p/6071086.html

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