import java.io.*; import javax.servlet.*; import javax.servlet.http.*; /** * Hello World! servlet with visit counter */ public class HelloCounter extends HttpServlet { // Number of times the servlet has been executed since // the program (web server) started private int visits=0; /** * Respond to any HTTP GET request with an * HTML Hello World! page with visit counter. */ public void doGet (HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // Set the HTTP content type in response header response.setContentType("text/html; charset=\"UTF-8\""); // Obtain a PrintWriter object for creating the body // of the response PrintWriter servletOut = response.getWriter(); // Compute the number of visits to the URL for this servlet visits++; // Create the body of the response, including visit count servletOut.println( " \n" + " \n" + " \n" + " \n" + " HelloCounter.java \n" + " \n" + " \n" + " \n" + "

\n" + " Hello World! \n" + "

\n" + "

\n" + " This page has been viewed \n" + visits + " times since the most recent server restart. \n" + "

\n" + " \n" + " "); servletOut.close(); } }