Exception in integration with Hibernate when using my own classloader

[redavens]

Hi, Folks,
The exception as below:

Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [com/abc/beansContext.xml]: Invocation of init method failed; nested exception is net.sf.cglib.core.CodeGenerationException: java.lang.reflect.InvocationTargetException-->null
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1337)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:473)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:423)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:729)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:381)
	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:93)
	at com.abc.SpringBeansLoader.<init>(SpringBeansLoader.java:33)
	at com.abc.SpringBeansLoader.getInitializer(SpringBeansLoader.java:48)
	at com.abc.ObjectService.getConfigMgr(ObjectService.java:9)
	at com.telenav.map.content.depend.classloader.TestLoader.main(TestLoader.java:30)
Caused by: net.sf.cglib.core.CodeGenerationException: java.lang.reflect.InvocationTargetException-->null
	at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:237)
	at net.sf.cglib.proxy.Enhancer.createHelper(Enhancer.java:377)
	at net.sf.cglib.proxy.Enhancer.createClass(Enhancer.java:317)
	at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.getProxyFactory(CGLIBLazyInitializer.java:127)
	at org.hibernate.proxy.pojo.cglib.CGLIBProxyFactory.postInstantiate(CGLIBProxyFactory.java:43)
	at org.hibernate.tuple.entity.PojoEntityTuplizer.buildProxyFactory(PojoEntityTuplizer.java:162)
	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 org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory(LocalSessionFactoryBean.java:814)
	at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:732)
	at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:211)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1368)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1334)
	... 18 more
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at net.sf.cglib.core.ReflectUtils.defineClass(ReflectUtils.java:384)
	at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:219)
	... 37 more
Caused by: java.lang.NoClassDefFoundError: org/hibernate/proxy/HibernateProxy
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(Unknown Source)
	... 43 more
Caused by: java.lang.ClassNotFoundException: org.hibernate.proxy.HibernateProxy
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClassInternal(Unknown Source)
	... 45 more

The main method:

    public static void main(String[] args) throws Exception {
        CPClassLoader ccl = new CPClassLoader(TestLoader.class.getClassLoader(), "project1");
        Thread.currentThread().setContextClassLoader(ccl);
        ccl.setDefintion("d:/work/project1/lib", "d:/work/project1/classes");
        Class clazz1 = ccl.loadClass ("com.abc.ObjectService");
        IService service = (IService)clazz1.newInstance();
        IConfigMgr mgr = service.getConfigMgr();
        mgr.setValue("AAAAA", "TestKey", "TestValue");
        System.out.println(mgr.getValue("AAAAA", "TestKey"));
        Collection<Config> configs = mgr.getConfigs("AAAAA");
    }

1) I have my own classloader named CPClassLoader which extends from URLClassLoader; and it's surely all of the necessary .jar files are put into the folder "d:/work/project1/lib".
2) The "ObjectService" class is put into the "D:/work/project1/classes" and it will initializes the ApplicationContext when "service.getConfigMgr()"; the exception occurs when the applicationcontext initializing.
3) It will success when I do not put any DB beans (hibernate etc) in the spring applicationcontext.xml;
4) Please pay attention to the last lines of the Exception, it seems the application requests the class "org.hibernate.proxy.HibernateProxy" not using my own classloader.
5) I debug the code and found the exception thrown in cglib, after it tried to load the class "Config" with the AppClassLoader (not my own, I think it is right) , which is also the pojo class mapping to DB, because the main method may need the "Config" pojo class, so I do not put that class under the folder "d:/work/project1/classes".
I think it's maybe the the fault of cglib; the POJO class "Config" should be put under the folder "d:/work/project1/classes"? How can I do when I want the POJO class both in the main method and DB access?

Thanks
RedAvens

[redavens]

I am not familiar with the CGLIB, is there anyone could help me?