java中使用request，application，session，cookie对象

导入包：

import javax.servlet.ServletContext;

import javax.servlet.http.Cookie; import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import javax.servlet.http.HttpSession;

import org.apache.struts2.ServletActionContext; import org.apache.struts2.interceptor.CookiesAware;

类中声明：

 private Map<String, String> cookie;
 public ServletContext application = ServletActionContext.getServletContext();
 public HttpServletRequest request = ServletActionContext.getRequest();
 public HttpServletResponse response = ServletActionContext.getResponse();
 public HttpSession session = request.getSession();