src/de/fhwf/in/inf/fit/aufgabe2/Clock.java


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package de.fhwf.in.inf.fit.aufgabe2;

import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;

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 Clock
 */
@WebServlet("/Clock")
public class Clock extends HttpServlet
{
   private static final long serialVersionUID = 1L;

   /**
    * @see HttpServlet#HttpServlet()
    */
   public Clock()
   {
      super();
   }

   /**
    * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
    *      response)
    */
   protected void doGet(HttpServletRequest request,
         HttpServletResponse response) throws ServletException, IOException
   {
      // Lade jede Sekunde neu
      response.setIntHeader("Refresh", 1);

      response.setContentType("text/html");

      SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");

      PrintWriter pw = response.getWriter();

      pw.println("<!DOCTYPE html>");
      pw.println("<html>");
      pw.println("<head>");
      pw.println("<meta charset=\"${encoding}\">");
      pw.println("<title>Hello World</title>");
      pw.println("</head>");
      pw.println("<body>");
      pw.print("<h1 align=\"center\">");
      pw.print(sdf.format(new Date()));
      pw.println("</h1>");
   }

   /**
    * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
    *      response)
    */
   protected void doPost(HttpServletRequest request,
         HttpServletResponse response) throws ServletException, IOException
   {
      doGet(request, response);
   }

}