使用refresh、expires、cache-control、pragma控制浏览器刷新及缓存

package cn.itcast.web.http;import java.io.IOException;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class Demo5 extends HttpServlet {public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {//服务器控制浏览器定时刷新后转到指定的页面response.setHeader("refresh","3;url=/day05/welcome.html");//服务器控制浏览器不缓存页面数据//response.setHeader("expires","-1");//response.setHeader("cache-control","no-cache");//response.setHeader("pragma","no-cache");}}