Problem accessing a session bean running on a different port

[Ramya]

Hi,
I am using weblogic7.0 as the application server. I craeted two EJB's and
deployed them in two ports, port 7001 and 7378. I can access the beans when I
deploy them in the same port. But, I am having problem when EJB1 'server1' accesses
EJB2 'server2' deployed in port 7378. Below is the code I am using to lookup the
bean.

Properties prop = new Properties();
prop.put(Context.INITIAL_CONTEXT_FACTORY,
"weblogic.jndi.WLInitialContextFactory");
prop.put(Context.PROVIDER_URL, "t3://localhost:7378");
Context ctx = new InitialContext(prop);

Object objref = ctx.lookup("java:comp/env/server2");
System.out.println("Inside the Object method "+objref);
iHome = (server2.InsertHome) objref;
System.out.println("Inside the iHome method "+iHome);
mInsert=iHome.create();

I am getting the following exception when I run the client. Can any one plaes
help me with the problem I am facing.
Thanks,
Ramya.

java.rmi.RemoteException: EJB Exception: ; nested exception is:
java.lang.NullPointerException

Start server side stack trace:
java.rmi.RemoteException: EJB Exception: ; nested exception is:
java.lang.NullPointerException
java.lang.NullPointerException
at server1.ConnectBean.insertName(ConnectBean.java:133)
at server1.ConnectBean_wtb7ta_EOImpl.insertName(ConnectBean_wtb7ta_EOIm
pl.java:45)
at server1.ConnectBean_wtb7ta_EOImpl_WLSkel.invoke(Unknown Source)
at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:362)

at weblogic.rmi.cluster.ReplicaAwareServerRef.invoke(ReplicaAwareServer
Ref.java:114)
at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:313)
at weblogic.security.service.SecurityServiceManager.runAs(SecurityServi
ceManager.java:785)
at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.ja
va:308)
at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteReques
t.java:30)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:153)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:134)
End server side stack trace
; nested exception is:
java.lang.NullPointerException:
Start server side stack trace:
java.lang.NullPointerException
at server1.ConnectBean.insertName(ConnectBean.java:133)
at server1.ConnectBean_wtb7ta_EOImpl.insertName(ConnectBean_wtb7ta_EOIm
pl.java:45)
at server1.ConnectBean_wtb7ta_EOImpl_WLSkel.invoke(Unknown Source)
at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:362)

at weblogic.rmi.cluster.ReplicaAwareServerRef.invoke(ReplicaAwareServer
Ref.java:114)
at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:313)
at weblogic.security.service.SecurityServiceManager.runAs(SecurityServi
ceManager.java:785)
at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.ja
va:308)
at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteReques
t.java:30)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:153)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:134)
End server side stack trace

at weblogic.rmi.internal.BasicOutboundRequest.sendReceive(BasicOutbound
Request.java:109)
at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemote
Ref.java:262)
at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemote
Ref.java:229)
at server1.ConnectBean_wtb7ta_EOImpl_WLStub.insertName(Unknown Source)
at server1.Client.example(Client.java:156)
at server1.Client.main(Client.java:168)
Caused by: java.lang.NullPointerException:
Start server side stack trace:
java.lang.NullPointerException
at server1.ConnectBean.insertName(ConnectBean.java:133)
at server1.ConnectBean_wtb7ta_EOImpl.insertName(ConnectBean_wtb7ta_EOIm
pl.java:45)
at server1.ConnectBean_wtb7ta_EOImpl_WLSkel.invoke(Unknown Source)
at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:362)

at weblogic.rmi.cluster.ReplicaAwareServerRef.invoke(ReplicaAwareServer
Ref.java:114)
at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:313)
at weblogic.security.service.SecurityServiceManager.runAs(SecurityServi
ceManager.java:785)
at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.ja
va:308)
at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteReques
t.java:30)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:153)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:134)
End server side stack trace

[Rob Woollen]

That looks like a NullPointerException in your code. You'd have to show
us line 133 of ConnectBean if you need help debugging it.

-- Rob

[Ramya]

Hi Rob,
Thanks for your relpy. Below is the method which calls methods from the EJB2.

public void insertName(String name) throws Exception {
Connection con = null;
String name2="raj";
int num=30;

PreparedStatement ps = null;
CallableStatement cs=null;

String fName=null;
try {
System.out.println("In the insertName() before calling this.lookup()");
this.lookUp();
System.out.println("In the insertName() after calling this.lookup()");
con=mInsert.getConnection();
System.out.println("Inside the InsertName() in connectbean the value
of connect is"+con);
ps = con.prepareStatement("Insert into My_info values (?,?,?) ");
ps.setString(1, name);
ps.setString(2, "RamyaRAJ");
ps.setInt(3,30);

if (!(ps.executeUpdate() > 0)) {
String error = "insertName: MyInfoBean (" + fName + ") not updated";
throw new NoSuchEntityException (error);
}
else{
System.out.println("After calling execute upadte");
}
} catch(Exception e) {
System.out.println("There is an SQL insert exception in insertName()
method");
e.printStackTrace();
throw new EJBException (e);
} finally {
mInsert.cleanup(con, ps);//LINE NO 133
}
}

Line 133 (mInsert.cleanup(con, ps);) is the call to close up the SQL connection
that is from EJB2. mInsert is the member variable of the Remote class from EJB2.

Thanks,
Ramya.

[Rob Woollen]

So it looks like mInsert is null causing the NPE. I think you'll have
to debug this one.

-- Rob