ClientLoginModule - no CallbackHandler available ...

[wurstfach]

I tried to use the ClientLoginModule for my standalone applicaion but something goes wrong.

After I do a lc.login() the LoginModule throws an Exception because it can't find a CallbackHandler ( the CallbackHandler = null).

To say in Detail:

java.lang.System.setProperty("java.security.auth.login.config","etc/auth.conf");

// let the LoginContext instantiate a new Subject
LoginContext lc = null;
try
{
lc = new LoginContext("example1");
// authenticate the Subject
lc.login();
System.out.println("authentication successful");


I'm not quite sure from where I should get that CallbackHandler? Should I call the initialize(...) method?

I'm thankful for any advice.

[wurstfach]

I figured it out myself.

I used the wrong Constructor for the Login Context. The right Constructor was:

lc = new LoginContext("example1", new MyCallbackHandler());

Where MyCallbackHandler is a Class that implements the Interface "CallbackHandler". I took the code for "MyCallbackHandler" from the jaas example from java. That worked fine :-)