Hi,

I am running a hibernate application for inserting a record in MySql database using JDeveloper.

I am using the following piece of code:

Configuration cfg = new Configuration().addClass(Department.class);
sessionFactory = cfg.buildSessionFactory() ;
Session session = sessionFactory.openSession() ;
Department dept = new Department() ;
dept.setDepname("PPPPPP");
session.save(dept);

but on executing it i get the following error trace:


java.lang.NoClassDefFoundError: net/sf/cglib/proxy/CallbackFilter
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:488)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:106)
at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].naming.ContextClassLoader.defineClass(ContextClassLoader.java:1102)
at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].naming.ContextClassLoader.findClass(ContextClassLoader.java:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:294)
at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].naming.ContextClassLoader.loadClass(ContextClassLoader.java:135)
at java.lang.ClassLoader.loadClass(ClassLoader.java:250)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:310)
at org.hibernate.bytecode.cglib.ProxyFactoryFactoryImpl.<clinit>(ProxyFactoryFactoryImpl.java:82)
at org.hibernate.bytecode.cglib.BytecodeProviderImpl.getProxyFactoryFactory(BytecodeProviderImpl.java:33)
at org.hibernate.tuple.entity.PojoEntityTuplizer.buildProxyFactoryInternal(PojoEntityTuplizer.java:182)
at org.hibernate.tuple.entity.PojoEntityTuplizer.buildProxyFactory(PojoEntityTuplizer.java:160)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.<init>(AbstractEntityTuplizer.java:135)
at org.hibernate.tuple.entity.PojoEntityTuplizer.<init>(PojoEntityTuplizer.java:55)
at org.hibernate.tuple.entity.EntityEntityModeToTuplizerMapping.<init>(EntityEntityModeToTuplizerMapping.java:56)
at org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:295)
at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:434)
at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:109)
at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:55)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:226)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1294)
at test.EmployeeDAO.addEmployee(EmployeeDAO.java:230)
at test.EmployeeAddAction.execute(EmployeeAddAction.java:29)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:446)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:266)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1292)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:510)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:721)
at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:306)
at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:767)
at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].server.http.HttpRequestHandler.run(HttpRequestHandler.java:259)
at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].server.http.HttpRequestHandler.run(HttpRequestHandler.java:106)
at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:803)
at java.lang.Thread.run(Thread.java:479)


Pls. help me out.

You are missing cglib in your classpath. there is a lib directory in the hibernate distribution. In there is a readme.txt file which exactly explains which depencencies are use by hibernate at compile or run time.

cheers,
mike