[jboss-user] [JNDI and Naming] - Context Lookup error
Mohamed Mostafa
do-not-reply at jboss.com
Mon Apr 9 09:33:08 EDT 2012
Mohamed Mostafa [https://community.jboss.org/people/mohamedmostafa] created the discussion
"Context Lookup error"
To view the discussion, visit: https://community.jboss.org/message/728891#728891
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i will explain my project breifly
I need to create a webservice which calls an EJB that execute a query on a sybase database
this database is a datasource on glassfish server ( i am using Netbeans 7.1.1 )
i have created Stateless session EJB which i needs it to connect to the database using JNDI
here is a part of the class
@Stateless
public class NewSessionBean implements NewSessionBeanLocal {
@Resource(name = "ejb")
private DataSource ejb;
@Override
public String execute(String query) {
String dbName = "java:comp/env/jdbc/ejb";
try {
Context loContext = (Context) new InitialContext().lookup("java:comp/env");
ejb = (DataSource)loContext.lookup("jdbc/ejb");
Connection loConnection = ejb.getConnection();
and the glassfish.xml found in the configuration files of the EJB project is
<glassfish-ejb-jar>
<enterprise-beans>
<ejb>
<ejb-name>NewSessionBean</ejb-name>
<resource-ref>
<res-ref-name>ejb</res-ref-name>
<jndi-name>jdbc/ejb</jndi-name>
</resource-ref>
</ejb>
</enterprise-beans>
</glassfish-ejb-jar>
when i run the code it always gives an error at that line
Context loContext = (Context) new InitialContext().lookup("java:comp/env");
i have tried many lookups like
Context loContext = (Context) new InitialContext().lookup("java:comp/env/jdbc/ejb");
HINT: my JNDI name i want to use is: jdbc/ejb
always giving me that error
> run:
> Apr 9, 2012 3:26:35 PM bean.NewSessionBean execute
> SEVERE: null
> javax.naming.NamingException: Lookup failed for 'java:comp/env' in SerialContext[myEnv={java.naming.factory.initial=com.sun.enterprise.naming.impl.SerialInitContextFactory, java.naming.factory.url.pkgs=com.sun.enterprise.naming, java.naming.factory.state=com.sun.corba.ee.impl.presentation.rmi.JNDIStateFactoryImpl} [Root exception is javax.naming.NamingException: Invocation exception: Got null ComponentInvocation ]
> at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:518)
> at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:455)
> at javax.naming.InitialContext.lookup(InitialContext.java:392)
> at bean.NewSessionBean.execute(NewSessionBean.java:35)
> at bean.Main.main(Main.java:14
> )
> Caused by: javax.naming.NamingException: Invocation exception: Got null ComponentInvocation
> at com.sun.enterprise.naming.impl.GlassfishNamingManagerImpl.getComponentId(GlassfishNamingManagerImpl.java:873)
> at com.sun.enterprise.naming.impl.GlassfishNamingManagerImpl.lookup(GlassfishNamingManagerImpl.java:742)
> at com.sun.enterprise.naming.impl.JavaURLContext.lookup(JavaURLContext.java:177)
> at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:498)
Please anyone help me if anything still unclear i will provide you with all you need i need this solution urgently.
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