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proguardejb-3.0obfuscationwildfly-10

Proguard causes org.hibernate.AnnotationException

this is my first time using a obfuscator (ProGuard) for obfuscation of my code. I have two J2EE projects EJB and webProject. Currently I am obfuscating only my EJB.jar project and it is also hosting webservices but before i reach that part i am getting an error

I successfully generated the output jar using ProGuard GUI app, but when I deploy that jar on my server (wildfly) it gave me this exception:

org.hibernate.AnnotationException: No identifier specified for entity: com.metadatatool.b.a

This b.a is the obfuscated code original names were different.

This exception is basically being invoked on a entity i.e. a View and it has a @Id identifier it works normal if I don't obfuscate my code but when I do it gives me this error. I am using the -keep attributes feature of ProGuard but still i am getting this error

Solution

  • EJB uses reflection and requires that some classes keep their original names, methods and annotations when they go through obfuscation. To fix your problem, you need add a couple of rules such as:

    -keepattributes RuntimeVisibleAnnotations
-keep @javax.persistence.* class * {
    *;
}

    to make ProGuard not strip annotations and not touch classes annotated with @Id.