控制缓存时间

package cn.ITHong.Response;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;//控制缓存的时间public class ResponseDemo6 extends HttpServlet {public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {response.setDateHeader("expirse", System.currentTimeMillis()+60*60*1000);response.getWriter().write("hello");}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {}}