I have a problem to deploy an application on weblogic server, after a discussion here on stackoverflow
i realized that the problem is that weblogic 12c is using a lib
I came across the same problem, what I did was, I replaced the com.google.common_1.0.0.0_0-6.jar file from weblogic-home/modules with the latest Guava that's currently guava-13.0.1.jar, but then i saw that weblogic is looking for a file with the name com.google.common.... so I just rename the Guava file to com.google.common_1.0.0.0_0-6.jar, and it worked for me.
Hope it will work for you as well!