用refresh控制浏览器定时刷新

package cn.itcast.response;

import java.io.IOException;

import java.io.PrintWriter;

import java.util.Random;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

//控制浏览器定时刷新

public class ResponseDemo5 extends HttpServlet {

public void doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

try {

test3(request, response);

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

//实用的自动跳转

public void test3(HttpServletRequest request,HttpServletResponse response) throws IOException, Exception {

String message = "<meta http-equiv='refresh' content='3;url=/day06/message.jsp'>恭喜你，登陆成功本浏览器将在3s后跳到首页，如果没有跳转，请点击<a href=''>超链接</a>";

this.getServletContext().setAttribute("message", message);

this.getServletContext().getRequestDispatcher("/message.jsp").forward(request, response);

}

public void test2(HttpServletResponse response) throws IOException {

//假设这是一个用于处理登陆的servlet

//假设运行到此用户登陆成功了

response.setHeader("refresh","3;url='/day06/index.jsp'");

response.setContentType("text/html;charset=UTF-8");

response.getWriter().write("恭喜你，登陆成功本浏览器将在3s后跳到首页，如果没有跳转，请点击<a href=''>超链接</a>");

}

public void test1(HttpServletResponse response) throws IOException {

response.setHeader("refresh", "3");

String data = new Random().nextInt(1000000)+"";

response.getWriter().write(data);

}

public void doPost(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

}

}