如何设置页面自动刷新第一篇??　servlet setHeader("refresh","2")

import java.io.IOException;
import java.util.Random;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @ClassName: ResponseDemo5
 * @Description: 设置页面自动刷新
 * @author amosli
 * @date 2013-10-16 下午11:57:08
  */
public class ResponseDemo5 extends HttpServlet {
    private static final long serialVersionUID = 1L;

    public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setHeader("refresh", "2");//２是２秒的意思
        String dataString = new Random().nextInt(10) + "";//输出０-９的随机数
        response.getOutputStream().write(dataString.getBytes());
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doGet(request, response);
    }

}