声明:文本内容转自互联网http://sech.iteye.com/blog/179332
严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener 
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: org/objectweb/asm/CodeVisitor 
Caused by: java.lang.NoClassDefFoundError: org/objectweb/asm/CodeVisitor 
at net.sf.cglib.core.KeyFactory$Generator.generateClass(KeyFactory.java:165) 
at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25) 
at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216) 
at net.sf.cglib.core.KeyFactory$Generator.create(KeyFactory.java:145) 
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:117) 
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:108) 
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:104) 
at net.sf.cglib.proxy.Enhancer.<clinit>(Enhancer.java:69) 
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.getProxyFactory(CGLIBLazyInitializer.java:117) 
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:805) 
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:745) 
at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:134) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1202) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1172) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:428) 
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:251) 
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:156) 
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:248) 
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:160) 
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:284) 
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:352) 
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:244) 
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:187) 
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:49) 
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3830) 
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4337) 
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) 
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719) 
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) 
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) 
at org.apache.catalina.core.StandardService.start(StandardService.java:516) 
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) 
at org.apache.catalina.startup.Catalina.start(Catalina.java:566) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
at java.lang.reflect.Method.invoke(Method.java:597) 
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) 
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) 
Caused by: java.lang.ClassNotFoundException: org.objectweb.asm.CodeVisitor 
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1358) 
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204) 
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319) 
... 50 more 
因hibernate 升级到3.1.3 以后,会使用升级的asm jar,而这个jar会去掉CodeVisitor 方法, 
解决方法: 
使用spring的cglib jar 不用hibernate的cglib 
我使用的是cglib-nodep-2.1_3.jar