Wildfly EJB Remote Client Exceptions.......

Below are exceptions and the solutions I applied while developing a remote client enterprise application.

To start with, enable debug for your application server to see the detail and good luck troubleshooting.

Exceptions :
Starting with  java.lang.ClassNotFoundException: org.hibernate.collection.internal.Persistent.........

Solution :
I fixed the exception be adding hibernate Entity Manager Dependencies.

Exception:
Error 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

Solution:
Add JBOSS-CLIENT Dependencies to your project


Exception:
IllegalStateException: EJBCLIENT000025: No EJB receiver available for handling

Solution:
Confirm that your EJB module have been deployed.


Exception:
org.jboss.naming.remote.client.initialcontextfactory wildfly
   
javax.naming.NamingException: WFLYNAM0027: Failed instantiate InitialContextFactory org.jboss.naming.remote.client.InitialContextFactory from classloader

javax.naming.namenotfoundexception while trying to lookup ejb
Caused by: org.jboss.modules.ModuleNotFoundException:  xxxxx:main

Solution:
Pay close attention to your JNDI context lookup URL.

Follow the link below, it might point you in the right direction

https://docs.jboss.org/author/display/WFLY8/JNDI+Reference?_sscc=t



Exception:
Caused by: java.lang.NoClassDefFoundError:

Solutions:
After adding manifest to the calling jar/war, goto the dependencies manifest and add the meta-inf for access to the meta-inf.

for example, your manifest file of TemplateClient.jar should look like

Manifest-Version: 1.0
Dependencies: lib/TemplateEJB-1.0-SNAPSHOT.jar export meta-inf

suppose TemplateEJB-xxx is being called from TemplateClient.jar

Read https://docs.jboss.org/author/display/WFLY10/Class+Loading+in+WildFly.



In conclusion, for remote client, on wildfly, your project pom should look like

      <dependency>
            <groupId>org.wildfly</groupId>
            <artifactId>wildfly-ejb-client-bom</artifactId>
            <version>10.0.0.Final</version>
            <type>pom</type>
        </dependency>

        <dependency>
            <groupId>org.jboss.remoting</groupId>
            <artifactId>jboss-remoting</artifactId>
            <version>4.0.21.Final</version>
            <scope>runtime</scope>
        </dependency>
       
        <dependency>
            <groupId>org.jboss</groupId>
            <artifactId>jboss-remote-naming</artifactId>
            <version>2.0.4.Final</version>
            <scope>runtime</scope>
        </dependency>