Binder.java Source code

Introduction

Here is the source code for Binder.java
Source

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionBindingEvent;
import javax.servlet.http.HttpSessionBindingListener;

public class Binder extends HttpServlet {
    public void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        resp.setContentType("text/html");
        PrintWriter out = resp.getWriter();
        HttpSession session = req.getSession(true);
        SessionObject o = new SessionObject(getServletContext());
        session.setAttribute("Binder.object", o);
        out.println("<html>");
        out.println("<head>");
        out.println("<title>Session Binder</title>");
        out.println("</head>");
        out.println("<body>");
        out.println("Object bound to session " + session.getId());

        out.println("</body>");
        out.println("</html>");
        out.flush();
    }
}

class SessionObject implements HttpSessionBindingListener {
    ServletContext context;

    public SessionObject(ServletContext context) {
        this.context = context;
    }

    public void valueBound(HttpSessionBindingEvent event) {
        context.log("" + (new java.util.Date()) + " Binding " + event.getName() + " to session "
                + event.getSession().getId());
    }

    public void valueUnbound(HttpSessionBindingEvent event) {
        context.log("" + (new java.util.Date()) + " Unbinding " + event.getName() + " from session "
                + event.getSession().getId());
    }

}