How can I resolve java.lang.ClassNotFoundException: org.hibernate.util.DTDEntityResolver when using Spring 3.1 with Hibernate 4.0.1?

Per the Hibernate annotations 3.5 documentation:*

Hibernate 3.5 and onward contains Hibernate Annotations.

You should remove the dependency on hibernate-annotations, and remove the excludes from the hibernate-entitymanager dependency. Generally, you should not mix versions of dependent packages.

* and JB Nizet's comment.