Solved

Accessing EJB Component from non j2ee application

Posted on 2004-09-29
6
339 Views
Last Modified: 2013-12-10
I am trying to access a stateless session bean on a remote Websphere server from a java application. This is not a servlet and does not run in a web container, it's a plain old java app. Here is the code that is giving me trouble:

Context initial = new InitialContext();            
Object o = initial.lookup("corbaname:iiop:wasdev3a:2810#ejb/com/xxxx/xxx/services/membersearch/ejb/MemberSearchServiceEjbBean");

I get this exception:

javax.naming.NameNotFoundException [Root exception is org.omg.CosNaming.NamingContextPackage.NotFound: IDL:omg.org/CosNaming/NamingContext/NotFound:1.0]
      at com.sun.jndi.cosnaming.ExceptionMapper.mapException(ExceptionMapper.java:44)
      at com.sun.jndi.cosnaming.CNCtx.callResolve(CNCtx.java:453)
      at com.sun.jndi.cosnaming.CNCtx.lookup(CNCtx.java:492)
      at com.sun.jndi.toolkit.url.GenericURLContext.lookup(GenericURLContext.java:185)
      at javax.naming.InitialContext.lookup(InitialContext.java:347)
      at com.ibx.ecomm.mistool.Main2.main(Main2.java:54)
Caused by: org.omg.CosNaming.NamingContextPackage.NotFound: IDL:omg.org/CosNaming/NamingContext/NotFound:1.0
      at org.omg.CosNaming.NamingContextPackage.NotFoundHelper.read(NotFoundHelper.java:72)
      at org.omg.CosNaming._NamingContextStub.resolve(_NamingContextStub.java:251)
      at com.sun.jndi.cosnaming.CNCtx.callResolve(CNCtx.java:440)
      ... 4 more
Exception in thread "main"

Can anyone give me any pointers on invoking an ejb from a plain old java app. First solution that actually works wins the points.
Thanks.
0
Comment
Question by:amd2002a
6 Comments
 
LVL 23

Accepted Solution

by:
rama_krishna580 earned 68 total points
ID: 12186288
0
 
LVL 7

Assisted Solution

by:damonf
damonf earned 66 total points
ID: 12190478
Do you have the EJB client jar from that session bean?  Got to have that in your java app first.

Next, you need code like this to do the JNDI lookup:

             parms.put(Context.INITIAL_CONTEXT_FACTORY,
                   "com.ibm.ejs.ns.jndi.CNInitialContextFactory");
             parms.put(Context.PROVIDER_URL, "iiop://hostserver:9999/"); //where 9999 is the iiop port
             Context ctx = new InitialContext(parms);
then do your lookup
0
 

Assisted Solution

by:aamir75
aamir75 earned 66 total points
ID: 12295214
For your scenario you first have to install Pluggable Application Client. After that you have to run setupclient.bat file from command line. It will prepare environemnt (it will initialize the necessary environment variables pointing to the necessary jar files and directories). After that you can run your application by executing following command line:

%JAVA_HOME%/bin/java -Xbootclasspath/p:%WAS_BOOTCLASSPATH%
-classpath <classpath JARs>
-Djava.ext.dirs=%WAS_EXT_DIRS% -Djava.naming.provider.url=iiop://localhost
-Djava.naming.factory.initial=com.ibm.websphere.naming.WsnInitialContextFactory
%SERVER_ROOT% %CLIENTSAS% <class containing main method>

you can see the variables like this %WAS_BOOTCLASSPATH%, these are the variables set by setupclient.bat.

You should get the initial context like this:

  Context ic = new InitialContext();
  String lookupString
            = "cell/nodes/localhost/servers/server1/ejb/dash/hr/services/EmployeeServiceHome";

For more info:

http://www-106.ibm.com/developerworks/websphere/library/techarticles/0409_bhogal/0409_bhogal.html

Good Luck!
Muhammad Aamir
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Configure Web Service (server application) I. Configure security for Web Services methods First, we need to protect Session bean which implements the service: 1. Open EJB deployment descriptor (ejb-jar.xml) in the EJB project that contains you…
Most of the developers using Tomcat find it easy to configure the datasource in Server.xml and use the JNDI name in the code to get the connection.  So the default connection pool using DBCP (or any other framework) is made available and the life go…
This demo shows you how to set up the containerized NetScaler CPX with NetScaler Management and Analytics System in a non-routable Mesos/Marathon environment for use with Micro-Services applications.
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

932 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now