Invoking EJB deployed Weblogic from an application deployed in Websphere

[mr saurabh gupta]

Hi Guys ...

I'm facing a wierd issue ... pl. let me know if you have any suggestions/solutions etc.

I have an application that is deployed in websphere 7. This application is required to act as a client for an EJB deployed in Weblogic 10.

The code in the client application is as follows:

      Properties p = new Properties();
      p.put( Context.PROVIDER_URL, "t3://myserver:30362");
      p.put( Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory");
      p.put( Context.SECURITY_PRINCIPAL, "user");
      p.put( Context.SECURITY_CREDENTIALS, "123");
      System.out.println("Properties = " + p);
      InitialContext ic = new InitialContext( p);

Somehow it fails when creating the object of InitialContext.

The system.out.println results into

Properties = {java.naming.factory.initial=weblogic.jndi.WLInitialContextFactory, 
java.naming.provider.url=t3://myserver:30362, java.naming.security.principal=user, 
java.naming.security.credentials=123}

I get the following exception.

javax.naming.NoInitialContextException: Failed to create InitialContext using factory specified 
in hashtable{java.naming.factory.initial=weblogic.jndi.WLInitialContextFactory, 
java.naming.provider.url=t3://myserver:30362, java.naming.security.principal=user, 
java.naming.factory.url.pkgs=:com.ibm.ws.naming:com.ibm.ws.naming, 
java.naming.security.credentials=123} [Root exception is java.lang.NullPointerException]
        at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:243)
        at javax.naming.InitialContext.initializeDefaultInitCtx(InitialContext.java:327)
        at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:357)
        at javax.naming.InitialContext.internalInit(InitialContext.java:295)
        at javax.naming.InitialContext.<init>(InitialContext.java:212)
        ... 53 more
Caused by: java.lang.NullPointerException
        at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:235)
        ... 59 more

Another thing that i observed was that in the error message, there is one additional property that gets printed.
java.naming.factory.url.pkgs=:com.ibm.ws.naming:com.ibm.ws.naming

I did not add this property in the properties object. Where did it come from ??

I have verified the classpath, url, user, password etc multiple times ... they are all correct.

Pl. suggest what could be the cause of the exception.

Regards
Saurabh

[Vikram Saxena]

There could be following issues which you need to check :

1. Is your server running at the URL : t3://myserver:30362 ?
2. You need to provide weblogic.jndi.WLInitialContextFactory in the classpath, have you placed the appropriate Weblogic jars in the classpath ?

Another thing that i observed was that in the error message, there is one additional property that gets printed.
java.naming.factory.url.pkgs=:com.ibm.ws.naming:com.ibm.ws.naming

This is being picked from your jndi.properties. The Application Server loads all the properties from this file when not explicitly mentioned.

[mr saurabh gupta]

Hi Vikram,

The answer to both of your questions is "yes".

Thanks
Saurabh

[Vikram Saxena]

Then first give it a try with the correct java.naming.factory.url.pkgs for Weblogic. I think this would be the value:
java.naming.factory.url.pkgs=weblogic.jndi.factories:weblogic.corba.j2ee.naming.url

Do not update/change the jndi.properties, Add this property to the Properties object you are passing to the InitialContext.