servlet+HTML实现动态时钟

  一、servlet：

package servlet;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class DateServlet
 */
@WebServlet("/DateServlet")
public class DateServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public DateServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		 response.setContentType("text/html;charset=utf-8");
	  	 response.setHeader("Refresh","1");
		 SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
		 String time1=sdf.format(new Date());
		 request.setAttribute("ss",time1);
		RequestDispatcher rd=request.getRequestDispatcher("clock.jsp");
	     rd.forward(request,response);
		 
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doGet(request, response);
	}

}

 二 、clock.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>







   
现在的时间是：<%=request.getAttribute("ss") %>

三、first.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>







  显示时间