Struts2学习之路（五）—— 访问web元素

 1 package com.user.action;
 2 
 3 import java.util.Map;
 4 
 5 import com.opensymphony.xwork2.ActionContext;
 6 import com.opensymphony.xwork2.ActionSupport;
 7 
 8 public class LoginAction1 extends ActionSupport{
 9     private Map request;
10     private Map session;
11     private Map application;
12     
13     public LoginAction1() {
14         request = (Map<String, String>) ActionContext.getContext().get("request");
15         session = ActionContext.getContext().getSession();
16         application = ActionContext.getContext().getApplication();
17     }
18     
19     public String execute(){
20         request.put("r1","r1");
21         session.put("s1","s1");
22         application.put("a1","a1");
23         return SUCCESS;
24     }
25 }

 1 package com.user.action;
 2 
 3 import java.util.Map;
 4 
 5 import org.apache.struts2.interceptor.ApplicationAware;
 6 import org.apache.struts2.interceptor.RequestAware;
 7 import org.apache.struts2.interceptor.SessionAware;    
 8 
 9 import com.opensymphony.xwork2.ActionSupport;
10 
11 //IOC程序设计思想
12 
13 public class LoginAction2 extends ActionSupport implements RequestAware,SessionAware,ApplicationAware {
14     private Map<String,Object> request;
15     private Map<String,Object> session;
16     private Map<String,Object> application;
17     
18     public String execute(){
19         request.put("r1", "r1");
20         session.put("s1", "s1");
21         application.put("a1", "a1");
22         return SUCCESS;
23     }
24     
25     @Override
26     public void setRequest(Map<String, Object> request) {
27         this.request = request;
28     }
29     
30 
31     @Override
32     public void setSession(Map<String, Object> session) {
33         this.session = session;
34         
35     }
36 
37     @Override
38     public void setApplication(Map<String, Object> application) {
39         this.application = application;
40         
41     }
42 }

 1 package com.user.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 import com.opensymphony.xwork2.ActionSupport;
10 
11 public class LoginAction3 extends ActionSupport {
12     private HttpServletRequest request;
13     private HttpSession session;
14     private ServletContext application;
15     
16     public LoginAction3() {
17         request = ServletActionContext.getRequest();
18         session = request.getSession();
19         application = session.getServletContext();
20     }
21     public String execute(){
22         request.setAttribute("r1", "r1");
23         session.setAttribute("s1", "s1");
24         application.setAttribute("a1", "a1");
25         return SUCCESS;
26     }
27 }

 1 package com.user.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 
 9 import com.opensymphony.xwork2.ActionSupport;
10 
11 public class LoginAction4 extends ActionSupport implements ServletRequestAware {
12     private HttpServletRequest request;
13     private HttpSession session;
14     private ServletContext application;
15     
16     public String execute(){
17         request.setAttribute("r1", "r1");
18         session.setAttribute("s1", "s1");
19         application.setAttribute("a1", "a1");
20         return SUCCESS;
21     }
22     
23     public void setServletRequest(HttpServletRequest request){
24         this.request = request;
25         this.session = session;
26         this.application = application;
27     }
28 }