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：

 package com.cy.action;

 import javax.servlet.ServletContext;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.http.HttpServletResponse;

 import org.apache.struts2.interceptor.ServletRequestAware;

 import org.apache.struts2.interceptor.ServletResponseAware;

 import org.apache.struts2.util.ServletContextAware;

 import com.opensymphony.xwork2.ActionSupport;

 public class BaseAction extends ActionSupport implements ServletRequestAware,ServletResponseAware,ServletContextAware {

     private static final long serialVersionUID = 1L;

     private ServletContext servletContext;

     private HttpServletRequest request;

     private HttpServletResponse response;

     @Override

     public void setServletContext(ServletContext arg0) {

         // TODO Auto-generated method stub

         this.servletContext=arg0;

     }

     @Override

     public void setServletResponse(HttpServletResponse arg0) {

         // TODO Auto-generated method stub

         this.response=arg0;

     }

     @Override

     public void setServletRequest(HttpServletRequest arg0) {

         // TODO Auto-generated method stub

         this.request=arg0;

     }

     public HttpServletRequest getRequest() {

         return request;

     }

     public void setRequest(HttpServletRequest request) {

         this.request = request;

     }

     public HttpServletResponse getResponse() {

         return response;

     }

     public void setResponse(HttpServletResponse response) {

         this.response = response;

     }

     public ServletContext getServletContext() {

         return servletContext;

     }

 }

 //--------------Struts2 操作作用域的3种方式-------------------

 //        //采用实现接口的方式，来获取作用域（最常用）

 //        getRequest().setAttribute(arg0, arg1)

 //        getRequest().getSession().setAttribute(arg0, arg1)

 //        getServletContext().setAttribute(arg0, arg1)

 //

 //        //采用ActionContext对象来对作用域进行操作

 //        ActionContext ac = ActionContext.getContext();

 //        ac.put(key, value);//直接对request进行操作。

 //        ac.getSession().put(key, value)//向Session中设值

 //        ac.getApplication().put(key, value)//向ServletContext中设值

 //        //采用ServletActionContext对象来对作用域进行操作

 //        HttpServletRequest request = ServletActionContext.getRequest();

 //        HttpServletResponse response = ServletActionContext.getResponse();

 //        ServletContext sevletContext = ServletActionContext.getServletContext();

 //    

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！）