Problem in using InitialContext to do a lookup of CMP EnitityBean.

Question

Hi,
I am running WLS 5.1 SP6 on Windows98. I am trying to lookup a CMP entiry bean from
Java 1.3 client. I can successfully create the InitialContext but having trouble in using it to do the lookup. I get the following error:
jndiContext is javax.naming.InitialContext@61f24(This is line is the result of println : see code)
javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)
at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)
at javax.naming.InitialContext.getURLOrDefaultInitCtx(Unknown Source)
at javax.naming.InitialContext.lookup(Unknown Source)
at com.titan.cabin.Client_1.main(Client_1.java:21)
My code of the Java 1.3 client is as follows:
package com.titan.cabin;
import com.titan.cabin.CabinHome;
import com.titan.cabin.Cabin;
import com.titan.cabin.CabinPK;
import javax.naming.InitialContext;
import javax.naming.Context;
import javax.naming.NamingException;
import java.rmi.RemoteException;
import java.util.Properties;
import java.util.Hashtable;
public class Client_1 {
public static void main(String [] args){
try {
InitialContext jndiContext = getWeblogicInitialContext();
System.out.println("jndiContext is " + jndiContext);
CabinHome home = (CabinHome)(jndiContext.lookup("CabinHome"));
Cabin cabin_1 = home.create(1);
System.out.println("created it!");
cabin_1.setName("Master Suite");
cabin_1.setDeckLevel(1);
cabin_1.setShip(1);
cabin_1.setBedCount(3);
CabinPK pk = new CabinPK();
pk.id = 1;
System.out.println("keyed it! ="+ pk);
Cabin cabin_2 = home.findByPrimaryKey(pk);
System.out.println("found by key! ="+ cabin_2);
System.out.println(cabin_2.getName());
System.out.println(cabin_2.getDeckLevel());
System.out.println(cabin_2.getShip());
System.out.println(cabin_2.getBedCount());
} catch (java.rmi.RemoteException re){re.printStackTrace();}
catch (javax.naming.NamingException ne){ne.printStackTrace();}
catch (javax.ejb.CreateException ce){ce.printStackTrace();}
catch (javax.ejb.FinderException fe){fe.printStackTrace();}
public static InitialContext getWeblogicInitialContext()
throws javax.naming.NamingException {
InitialContext ctx = null;
Hashtable ht = new Hashtable();
ht.put(Context.INITIAL_CONTEXT_FACTORY, weblogic.jndi.WLInitialContextFactory.class.getName());
ht.put(Context.PROVIDER_URL, "t3://localhost:7001");
ht.put(Context.SECURITY_PRINCIPAL, "system");
ht.put(Context.SECURITY_CREDENTIALS, new weblogic.common.T3User("system", "askpanch"));
try {
ctx = new InitialContext(ht);
// Use the context in your program
catch (NamingException e) {
System.out.println("InitialContext could not be created");
System.out.println("The explanation is " + e.getExplanation());
e.printStackTrace();
// a failure occurred
finally {
try {ctx.close();}
catch (Exception e) {
// a failure occurred
return ctx;
The message printed by System.out.println shows that InitialContext is created but exception is thrown when it is used by the lookup method.
My classpath is as follows:
CLASSPATH=C:\VisualCafeEE\Java\Lib\ERADPUBLIC.JAR;C:\VisualCafeEE\Java\Lib\servlet.jar;C:\VisualCafeEE\Java\Lib\server.jar;C:\VisualCafeEE\Bin\Components\templa
tes.jar;C:\VisualCafeEE\Java\Lib\javax_ejb.ZIP;C:\VisualCafeEE\Java\Lib\jndi.jar;C:\VisualCafeEE\Bin\Components\vcejbwl.jar;C:\VisualCafeEE\Bin\sb;C:\VisualCafe
EE\Bin\sb\classes\sb.jar;.;;C:\VisualCafeEE\Java\Lib;C:\VisualCafeEE\Java\Lib\SYMCLASS.ZIP;C:\VisualCafeEE\Java\Lib\CLASSES.ZIP;C:\VisualCafeEE\Java\Lib\COLLECT
IONS.ZIP;C:\VisualCafeEE\Java\Lib\ICEBROWSERBEAN.JAR;C:\VisualCafeEE\Java\Lib\SYMTOOLS.JAR;C:\VisualCafeEE\JFC\SWINGALL.JAR;C:\VisualCafeEE\Bin\Components\SFC.J
AR;C:\VisualCafeEE\Bin\Components\SYMBEANS.JAR;C:\VisualCafeEE\Java\Lib\DBAW.ZIP;C:\VisualCafeEE\Bin\Components\DBAW_AWT.JAR;C:\VisualCafeEE\Bin\Components\Data
bind.JAR;C:\VisualCafeEE\Java\Lib\ERADTOOLS.JAR;;C:\IBMVJava\eab\runtime30;C:\IBMVJava\eab\runtime20;;.;c:\Weblogic\classes;c:\weblogic\lib\weblogicaux.jar
Any help to solove this problem from anybody is greatly appreciated. I am including some other related articles in this newsgroup for your ready reference(see below).
Thanks a lot,
Ashok Pancharya
Email: [email protected]
Sounds like your WL config is a bit different, perhaps a classpath issue or
a missing .properties file or a different command line. For whatever
reason, the factory does not know what class is supposed to be used as the
initial context.
Peace.
Cameron Purdy
[email protected]
http://www.tangosol.com
WebLogic Consulting Available
"Chris Solar" <[email protected]> wrote in message
news:[email protected]...
Hi-
I'm running WLS 5.1 on NT 4.0 (SP6).
For some reason, I'm unable to use the default
constructor to get an initial context. That is,
if I try:
InitialContext ctx = new InitialContext();
I get a NoInitialContextException, as in:
"Need to specify class name in environment or system
property, or as an applet parameter, or in an application
resource file: java.naming.factory.initial"
This does not happen if I pass in a HashTable or Properties
object containing a value for the initial context factory
(even if it's just weblogic.jndi.WLInitialContextFactory).
Colleagues of mine seem to be able to use
the defaut constructor without any problems.
What am I missing?
-Chris.

Answer 1

Thanks Gene. Good solution. I could solve the problem which is explained in my another article posted just before a minute you posted this response.
Thanks again.
Ashok Pancharya
"Gene Chuang" <[email protected]> wrote:
According to your getWeblogicInitialContext(), you are putting ctxt.close() in a finally block,
which will always get executed, and then returning ctxt. Don't think you can do any lookups with a
closed Context.
Gene Chuang
Join Kiko.com!
"Ashok Pancharya" <[email protected]> wrote in message news:[email protected]...
Hi,
I am running WLS 5.1 SP6 on Windows98. I am trying to lookup a CMP entiry bean from
Java 1.3 client. I can successfully create the InitialContext but having trouble in using it todo the lookup. I get the following error:
jndiContext is javax.naming.InitialContext@61f24(This is line is the result of println : see code)
javax.naming.NoInitialContextException: Need to specify class name in environment or systemproperty, or as an applet parameter, or in an application resource file:
java.naming.factory.initial
at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)
at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)
at javax.naming.InitialContext.getURLOrDefaultInitCtx(Unknown Source)
at javax.naming.InitialContext.lookup(Unknown Source)
at com.titan.cabin.Client_1.main(Client_1.java:21)
My code of the Java 1.3 client is as follows:
package com.titan.cabin;
import com.titan.cabin.CabinHome;
import com.titan.cabin.Cabin;
import com.titan.cabin.CabinPK;
import javax.naming.InitialContext;
import javax.naming.Context;
import javax.naming.NamingException;
import java.rmi.RemoteException;
import java.util.Properties;
import java.util.Hashtable;
public class Client_1 {
public static void main(String [] args){
try {
InitialContext jndiContext = getWeblogicInitialContext();
System.out.println("jndiContext is " + jndiContext);
CabinHome home = (CabinHome)(jndiContext.lookup("CabinHome"));
Cabin cabin_1 = home.create(1);
System.out.println("created it!");
cabin_1.setName("Master Suite");
cabin_1.setDeckLevel(1);
cabin_1.setShip(1);
cabin_1.setBedCount(3);
CabinPK pk = new CabinPK();
pk.id = 1;
System.out.println("keyed it! ="+ pk);
Cabin cabin_2 = home.findByPrimaryKey(pk);
System.out.println("found by key! ="+ cabin_2);
System.out.println(cabin_2.getName());
System.out.println(cabin_2.getDeckLevel());
System.out.println(cabin_2.getShip());
System.out.println(cabin_2.getBedCount());
} catch (java.rmi.RemoteException re){re.printStackTrace();}
catch (javax.naming.NamingException ne){ne.printStackTrace();}
catch (javax.ejb.CreateException ce){ce.printStackTrace();}
catch (javax.ejb.FinderException fe){fe.printStackTrace();}
public static InitialContext getWeblogicInitialContext()
throws javax.naming.NamingException {
InitialContext ctx = null;
Hashtable ht = new Hashtable();
ht.put(Context.INITIAL_CONTEXT_FACTORY,weblogic.jndi.WLInitialContextFactory.class.getName());
ht.put(Context.PROVIDER_URL, "t3://localhost:7001");
ht.put(Context.SECURITY_PRINCIPAL, "system");
ht.put(Context.SECURITY_CREDENTIALS, new weblogic.common.T3User("system", "askpanch"));
try {
ctx = new InitialContext(ht);
// Use the context in your program
catch (NamingException e) {
System.out.println("InitialContext could not be created");
System.out.println("The explanation is " + e.getExplanation());
e.printStackTrace();
// a failure occurred
finally {
try {ctx.close();}
catch (Exception e) {
// a failure occurred
return ctx;
The message printed by System.out.println shows that InitialContext is created but exception isthrown when it is used by the lookup method.
My classpath is as follows:
CLASSPATH=C:\VisualCafeEE\Java\Lib\ERADPUBLIC.JAR;C:\VisualCafeEE\Java\Lib\servlet.jar;C:\VisualCafe
EE\Java\Lib\server.jar;C:\VisualCafeEE\Bin\Components\templa
>
tes.jar;C:\VisualCafeEE\Java\Lib\javax_ejb.ZIP;C:\VisualCafeEE\Java\Lib\jndi.jar;C:\VisualCafeEE\Bin
\Components\vcejbwl.jar;C:\VisualCafeEE\Bin\sb;C:\VisualCafe
>
EE\Bin\sb\classes\sb.jar;.;;C:\VisualCafeEE\Java\Lib;C:\VisualCafeEE\Java\Lib\SYMCLASS.ZIP;C:\Visual
CafeEE\Java\Lib\CLASSES.ZIP;C:\VisualCafeEE\Java\Lib\COLLECT
>
IONS.ZIP;C:\VisualCafeEE\Java\Lib\ICEBROWSERBEAN.JAR;C:\VisualCafeEE\Java\Lib\SYMTOOLS.JAR;C:\Visual
CafeEE\JFC\SWINGALL.JAR;C:\VisualCafeEE\Bin\Components\SFC.J
>
AR;C:\VisualCafeEE\Bin\Components\SYMBEANS.JAR;C:\VisualCafeEE\Java\Lib\DBAW.ZIP;C:\VisualCafeEE\Bin
\Components\DBAW_AWT.JAR;C:\VisualCafeEE\Bin\Components\Data
>
bind.JAR;C:\VisualCafeEE\Java\Lib\ERADTOOLS.JAR;;C:\IBMVJava\eab\runtime30;C:\IBMVJava\eab\runtime20
;;.;c:\Weblogic\classes;c:\weblogic\lib\weblogicaux.jar
Any help to solove this problem from anybody is greatly appreciated. I am including some otherrelated articles in this newsgroup for your ready reference(see below).
Thanks a lot,
Ashok Pancharya
Email: [email protected]
Sounds like your WL config is a bit different, perhaps a classpath issue or
a missing .properties file or a different command line. For whatever
reason, the factory does not know what class is supposed to be used as the
initial context.
Peace.
Cameron Purdy
[email protected]
http://www.tangosol.com
WebLogic Consulting Available
"Chris Solar" <[email protected]> wrote in message
news:[email protected]...
Hi-
I'm running WLS 5.1 on NT 4.0 (SP6).
For some reason, I'm unable to use the default
constructor to get an initial context. That is,
if I try:
InitialContext ctx = new InitialContext();
I get a NoInitialContextException, as in:
"Need to specify class name in environment or system
property, or as an applet parameter, or in an application
resource file: java.naming.factory.initial"
This does not happen if I pass in a HashTable or Properties
object containing a value for the initial context factory
(even if it's just weblogic.jndi.WLInitialContextFactory).
Colleagues of mine seem to be able to use
the defaut constructor without any problems.
What am I missing?
-Chris.