7a. Simple EJB application to demonstrate Servlet Hit count using Singleton Session Beans

newhtml.html

<html>
    <head>
        <meta http-equiv="Refresh" content="0; URL=ServletClient">
    </head>
    <body>
        </body>
</html>


CounterServletHitsBean.java

package servlet;
import javax.ejb.Singleton;


@Singleton
public class CountServletHitsBean {
    private int hitcount;

    public int incrementAndGetHitCount()
        {
            return hitcount++;
    }
   
}


SevletClient.java

package servlet;

import java.io.IOException;
import java.io.PrintWriter;
import javax.ejb.EJB;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet(name= "ServletClient", urlPatterns={"/ServletClient"})
public class ServletClient extends HttpServlet {
  @EJB CountServletHitsBean CounterBean;
   

    @Override
    protected void service(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        try (PrintWriter out = response.getWriter()) {
            /* TODO output your page here. You may use following sample code. */
            out.println("<!DOCTYPE html>");
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet ServletClient</title>");           
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Number of times this servlet is accessed:" + CounterBean.incrementAndGetHitCount()+"</h1>");
            out.println("</body>");
            out.println("</html>");
        }
    }

}

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