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 ;
}
}
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