Weblogic 12c : Prefer-web-inf-classes and prefer-application-packages for Jersey

java guice weblogic12c jersey-1.0 guice-servlet
Azimuts picture Azimuts · Mar 29, 2016 · Viewed 11.2k times · Source

I have to use both (oddly enough ..) prefer-web-inf-classes and prefer-application-packages properties of weblogic.xml on a Weblogic 12c Server (12.2.1)

It is REST application based on Jersey 1.9. ( Jersey 1.x JAX-RS RI) and Guice.

1. Why use :prefer-web-inf-classes

If you have more than one WAR you have to place at the level of war/lib the libraries for guice-jersey / guice , other way you get an Multibindings Error.

It must be indicated also the prefer-web-inf-classes to true.

This way it works properly!

I have tried to work in the same way using prefer-application-packages with packages (com.sun.jersey.guice.spi.container.servlet, com.google.inject.servlet, etc...) but no way.

Note: It is not possible to exclude this libraries at EAR level.

2. Why use :prefer-application-packages

To use Jersey 1.x JAX-RS RI on Weblogic 12c (12.2.1) so I have to indicate the following packages (other way Weblogic uses Jersey 2, and different version of Jackson libraries, etc. )

It works perfectly on Jersey 1.X if it is indicated this way. . I have probed two war separately, and works fine... but, remember my friend I have two war..so....

Summary

I can not use both properties (deploying error for using both properties on the weblogic.xml..), but it's needed :

  1. For the problem with Guice Filter, need to put prefer-web-inf-classes to trueto use guice-servlet.jar / jersey-guice.jar at war-lib level.
  2. To work with Jersey 1.x, need to use ..... prefer-application-package

Question: How to combine both to use one of them??

Answer

Azimuts picture Azimuts · Jul 26, 2016

After all

  1. Use just prefer-web-inf-classes to true.

  2. If you use this, you don't need to use prefer-application-packages ....BUT ENSURE that you have the correct libraries at war /ear level.

    The problem was:

The Project had a dependency with Jersey 2 (based on Swagger for Jersey 2.X ...) So via Swagger dependencies (swagger-jersey2-jaxrs), Jersey 2 libraries was packaged on ear/war... and so prefer-web-inf-classes HAS NO EFFECT!

After removing the dependency all was resolved!

At same the level (classpath or ear lib, or war lib) should not exist different versions of the same library.

Related questions

Overriding Binding in Guice

I've just started playing with Guice, and a use-case I can think of is that in a test I just want to override a single binding. I think I'd like to use the rest of the production level bindings to …

Read More
How to instantiate spring managed beans at runtime?

I stuck with a simple refactoring from plain java to spring. Application has a "Container" object which instantiates its parts at runtime. Let me explain with the code: public class Container { private List<RuntimeBean> runtimeBeans = new ArrayList<…

Read More
Why java classes do not inherit annotations from implemented interfaces?

I've been using Guice's AOP to intercept some method calls. My class implements an interface and I would like to annotate the interface methods so Guice could select the right methods. Even if the annotation type is annotated with Inherited …

Read More