NoClassDefFoundError: javassist/util/proxy/MethodFilter

Exception in thread "main" java.lang.NoClassDefFoundError: javassist/util/proxy/MethodFilter
 at org.hibernate.bytecode.javassist.BytecodeProviderImpl.getProxyFactoryFactory(BytecodeProviderImpl.java:49)
 at org.hibernate.tuple.entity.PojoEntityTuplizer.buildProxyFactoryInternal(PojoEntityTuplizer.java:203)
 at org.hibernate.tuple.entity.PojoEntityTuplizer.buildProxyFactory(PojoEntityTuplizer.java:181)
 at org.hibernate.tuple.entity.AbstractEntityTuplizer.<init>(AbstractEntityTuplizer.java:158)
 at org.hibernate.tuple.entity.PojoEntityTuplizer.<init>(PojoEntityTuplizer.java:76)
 at org.hibernate.tuple.entity.EntityEntityModeToTuplizerMapping.<init>(EntityEntityModeToTuplizerMapping.java:80)
 at org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:325)
 at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:457)
 at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:131)
 at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:84)
 at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:261)
 at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1327)
 at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:867)
 at com.yin.hibernate.model.GuestBookTest.main(GuestBookTest.java:10)
 

解决方法：
引入：javassist-3.4.GA.jar