Instantiating LoginConfiguration0 for JAAS

Question

Hello
I'm trying to distribute an application that needs a logon to an ejb server via webstart. Here is
some sample code on how I am setting the system properties to use a file, auth.conf, to tell
JAAS about the client's login configuration
public UserLogon (String username, String password) throws LoginException
     Properties p = System.getProperties();
     ClassLoader cl = this.getClass().getClassLoader();
     p.setProperty ("java.security.auth.login.config",
                                cl.getResource ("images/auth.conf").toString() );
     System.out.println (p.getProperty ("java.security.auth.login.config"));
  .....This works perfectly well when running the client traditionally, but via Webstart it throws an exception saying that it cannot instantiate LoginConfiguration0. Anybody got a clue how I can get this to work?

Answer 1

You might move the the getResource() apart,
  String s = cl.getResource ("images/auth.conf");     
  p.setProperty("java.security.auth.login.config", s);to be sure that it is not a class loading problem, although in that case it could be tricky, because you seem to set the class loader right.
On the other hand the culprit might be your JDK, read the post by David Harvey, August 14th
http://forum.java.sun.com/thread.jsp?forum=38&thread=139649
for details.
Regards,
Marc