Struts2的Action中如何操作作用域对象

得到作用域对象有三种方法，这里用代码来解释：

 1 package com.cy.action;
 2
 3 import javax.servlet.ServletContext;
 4 import javax.servlet.http.HttpServletRequest;
 5 import javax.servlet.http.HttpServletResponse;
 6
 7 import org.apache.struts2.interceptor.ServletRequestAware;
 8 import org.apache.struts2.interceptor.ServletResponseAware;
 9 import org.apache.struts2.util.ServletContextAware;
10
11 import com.opensymphony.xwork2.ActionSupport;
12
13 public class BaseAction extends ActionSupport implements ServletRequestAware,ServletResponseAware,ServletContextAware {
14
15     private static final long serialVersionUID = 1L;
16     private ServletContext servletContext;
17     private HttpServletRequest request;
18     private HttpServletResponse response;
19
20     @Override
21     public void setServletContext(ServletContext arg0) {
22         // TODO Auto-generated method stub
23         this.servletContext=arg0;
24
25     }
26
27     @Override
28     public void setServletResponse(HttpServletResponse arg0) {
29         // TODO Auto-generated method stub
30         this.response=arg0;
31
32     }
33
34     @Override
35     public void setServletRequest(HttpServletRequest arg0) {
36         // TODO Auto-generated method stub
37         this.request=arg0;
38     }
39
40     public HttpServletRequest getRequest() {
41         return request;
42     }
43
44     public void setRequest(HttpServletRequest request) {
45         this.request = request;
46     }
47
48     public HttpServletResponse getResponse() {
49         return response;
50     }
51
52     public void setResponse(HttpServletResponse response) {
53         this.response = response;
54     }
55
56     public ServletContext getServletContext() {
57         return servletContext;
58     }
59
60
61
62 }

 1 //--------------Struts2 操作作用域的3种方式-------------------
 2 //        //采用实现接口的方式，来获取作用域（最常用）
 3 //        getRequest().setAttribute(arg0, arg1)
 4 //        getRequest().getSession().setAttribute(arg0, arg1)
 5 //        getServletContext().setAttribute(arg0, arg1)
 6 //
 7
 8 //        //采用ActionContext对象来对作用域进行操作
 9 //        ActionContext ac = ActionContext.getContext();
10 //        ac.put(key, value);//直接对request进行操作。
11 //        ac.getSession().put(key, value)//向Session中设值
12 //        ac.getApplication().put(key, value)//向ServletContext中设值
13
14
15 //        //采用ServletActionContext对象来对作用域进行操作
16 //        HttpServletRequest request = ServletActionContext.getRequest();
17 //        HttpServletResponse response = ServletActionContext.getResponse();
18 //        ServletContext sevletContext = ServletActionContext.getServletContext();
19 //    

随着技术不断的更新，这里的仅供参考！（Struts在公司里已经不再是主流了！）