Weblogic .ear deployment java.lang.ClassNotFoundException

Question

When i deploy .ear file on weblogic 12c, it is giving following error.

java.lang.ClassNotFoundException: com.abc.util.CustomUtility
    at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:335)
    at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:302)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:180)


<Administration Console encountered the following error: weblogic.application.WrappedDeploymentException: com.abc.util.CustomUtility
    at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:335)
    at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:302)

As soon as I deploy .ear file, it is giving the above error. It's complaining about ClassNotFoundException which is a user-defined class in the project.

I see all .classes are part of .ear file. Still why this issue comes up ?

Please help me on this.

jorgeff · Accepted Answer · 2014-07-14 18:19:31Z

3

I've seen this problem when I have utility classes defined on several projects. The .class are in the .ear, but the app doesn't find it.

In my case the problem was solved adding the missing class project to the manifest file.

answered Jul 14, 2014 at 18:19

jorgeff

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2 Comments

user3791049 Over a year ago

Thanks for that info. I have added .class files to jar and kept in weblogic/userdomain/lib folder. The errors are gone. As my .ear has multiple .jar files inside, i put those .jars inside weblogic/userdomain/lib folder. Working fine. Is this a right way to do?

jorgeff Over a year ago

I'm not sure if thats the best way, but you can check here http://docs.oracle.com/cd/E21764_01/web.1111/e13706/classloading.htm

Lonzak · Accepted Answer · 2019-11-06 16:58:40Z

The accepted answer didn't solve our problem. We solved it by adding the packages (of the missing classes) to the prefer-application-packages section in the weblogic-application.xml

    <!-- to load classes of the packages from application context first and not from server context.  -->
    <prefer-application-packages>
        <package-name>antlr.*</package-name>
        <package-name>org.apache.*</package-name>
        <package-name>org.hibernate.*</package-name>
        <package-name>org.springframework.*</package-name>
        <package-name>org.aopalliance.*</package-name>
        <package-name>org.objectweb.*</package-name>
        <package-name>net.sf.cglib.*</package-name>
        ...
    </prefer-application-packages>
</weblogic-application>

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