import java.io.*;
import java.text.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import common.ServiceFinder;
import java.rmi.RMISecurityManager;
import net.jini.discovery.LookupDiscovery;
import net.jini.core.lookup.ServiceTemplate;
import net.jini.core.lookup.ServiceItem;
import net.jini.core.discovery.LookupLocator;
import net.jini.discovery.LookupDiscoveryManager;
import net.jini.lookup.ServiceDiscoveryManager;
import net.jini.lease.LeaseRenewalManager;
import net.jini.core.lookup.ServiceRegistrar;
/**
* @author Jan Newmarch
*/
public class JiniFinder extends HttpServlet {
protected ServiceFinder finder;
public void init() {
init(new PrintWriter(System.err));
}
public void init(PrintWriter out) {
LookupLocator lookup = null;
ServiceRegistrar registrar = null;
System.setSecurityManager(new RMISecurityManager());
try {
lookup = new LookupLocator("jini://localhost");
registrar = lookup.getRegistrar();
} catch(Exception e) {
out.println("First lookup failed: " + e.toString());
}
Class [] classes = new Class[] {ServiceFinder.class};
ServiceTemplate template = new ServiceTemplate(null, classes,
null);
Object service = null;
try {
service = registrar.lookup(template);
} catch(Exception e) {
out.println(e.toString());
}
if (service == null) {
// couldn't find a service in time
out.println("Jini service finder is not running");
// System.exit(1); - may kill tomcat!
}
// Get the service
finder = (ServiceFinder) service;
}
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException
{
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("");
out.println("");
out.println("" + "Jini Service Finder" + "");
out.println("");
out.println("");
out.println(" Jini Service Finder
");
if (finder == null) {
// out.println("
Service finder null");
init(out);
}
printServices(out);
HttpSession session = request.getSession();
session.setAttribute("ServiceFinder", finder);
out.println("");
out.println("");
}
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException
{
doGet(request, response);
}
void printServices(PrintWriter out) {
ServiceItem[] services = null;
try {
services = finder.getServices();
} catch(java.rmi.RemoteException e) {
out.println("" + e.toString() + "
");
out.println(" \n