Why Wildfly 8.1.0 final return java.lang.NoClassDefFoundError: when deploying ejb module with a remote application library but glassfish doesn’t?

Question

I tried to create a simple EJB remote client sample but I keep getting java.lang.NoClassDefFoundError: any time I tried to deploy the EJB.

The Remote Java Library File Structure is:

> TestRemoteInterface     
    --Source Package      
       -- bean
          --TestBeanRemote.java   
    -- Libraries      
       -- Java EE 6 API Library       
       --JDK 1.8

The EJB Module File Structure is:

> TestEJBModule   
    --Source Package      
       -- bean
          --TestBean.java     
    -- Libraries  
       -- TestRemoteInterface – dist/TestRemoteInterface    
       -- Java EE 6 API Library       
       -- JDK 1.8

TestBeanRemote.java

package bean;
import javax.ejb.Remote;

@Remote
public interface TestBeanRemote {

    String getName(String name);

}

TestBean .java

package bean;

import javax.ejb.Stateless;

@Stateless public class TestBean implements TestBeanRemote {
@Override
public String getName(String name) {
    return "Here is my " + name;
}    }

Question: When I try to deploy the TestEJBModule on get the follow log:

WARN [org.jboss.modules] (MSC service thread 1-6) Failed to define class bean.TestBean in Module "deployment.TestEJBModule.jar:main" from Service Module Loader: java.lang.LinkageError: Failed to link bean/TestBean (Module "deployment.TestEJBModule.jar:main" from Service Module Loader)

....

Caused by: java.lang.NoClassDefFoundError: bean/TestBeanRemote
    at java.lang.ClassLoader.defineClass1(Native Method) [rt.jar:1.8.0_05]

....

Caused by: java.lang.ClassNotFoundException: bean.TestBeanRemote from [Module "deployment.TestEJBModule.jar:main" from Service Module Loader] at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:213) [jboss-modules.jar:1.3.3.Final]

...

Caused by: java.lang.LinkageError: Failed to link bean/TestBean (Module "deployment.TestEJBModule.jar:main" from Service Module Loader) at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:487) [jboss-modules.jar:1.3.3.Final] .....

Caused by: java.lang.NoClassDefFoundError: bean/TestBeanRemote

.....

Caused by: java.lang.ClassNotFoundException: bean.TestBeanRemote from [Module "deployment.TestEJBModule.jar:main" from Service Module Loader] at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:213) [jboss-modules.jar:1.3.3.Final]

When I tried to deploy this same sample with Glassfish 4. It works fine.

NB: I am using netbeans 8.0.1

There appear to be a similar thread but it didn't help much. Thank you in advance.

Are you deploying TestRemoteInterface and TestEJBModule as two separated jars? If so, both jars are in separated classloaders and this is why you get NoClassDefFoundError. Have you considered to deploy an ear file containing both jars? — fonkap

Cocoa Butter Cocoa Butter · Accepted Answer · 2015-04-15T15:12:47

I solved this problem by deploying the TestRemoteInterface jar to the sever first. Then I added it to the project manifest.mf as a dependency.

example:

Dependencies: deployment.TestRemoteInterface.jar

Another option if you are using maven is the use maven dependencies manifest

<configuration>
   <archive>
      <manifestEntries>
         <Dependencies>TestRemoteInterface.jar</Dependencies>
      </manifestEntries>
   </archive>
</configuration>

Why Wildfly 8.1.0 final return java.lang.NoClassDefFoundError: when deploying ejb module with a remote application library but glassfish doesn’t?

1 Answers