java.lang.AbstractMethodError deploying an application (Spring 4 MVC+Hibernate 4/5)

Question

I have an application (Spring 4 MVC+Hibernate 4+MySQL+Maven integration example using annotations) , integrating Spring with Hibernate using annotation based configuration b

Answer 1

An AbstractMethodError is a subclass of IncompatibleClassChangeError, whose javadoc reads:

Thrown when an incompatible class change has occurred to some class definition. The definition of some class, on which the currently executing method depends, has since changed.

That is, a class A depends on some other class B, that has been changed in an incompatible way since A was compiled, i.e. you have the wrong version of some dependency in your classpath.

You might wish to verify that are really using the version of hibernate spring asks for. I stress this because you claim to use Hibernate 4, but actually include Hibernate 5 dependencies in your pom.xml:

        <hibernate.version>5.0.4.Final</hibernate.version>

and

    <dependency>
       <groupId>org.hibernate</groupId>
       <artifactId>hibernate-entitymanager</artifactId>
       <version>5.0.4.Final</version>
       <scope>runtime</scope>
  </dependency>