java.lang.NoClassDefFoundError.couldn't initialize class HibernateUtil

项目使用Struts1.2+Hibernate3.3来做的。之前部署使用完全没有问题。最近由于项目需要，又添加了几个数据表，同时添加了相应的entity和.hbm.xml文件，并且在hibernate.cfg.xml中添加了相应的记录。

结果，系统就bug掉了。。。。报错为： java.lang.NoClassDefFoundError.couldn't initialize class HibernateUtil
HibernateUtil是读取hibernate.cfg.xml文件的类。

但是如果在hibernate.cfg.xml中删掉新添加的数据表记录，系统正常工作；

在线等啊~~~~急！

附代码如下：
1. HibernateUtil.java; 2. hibernate.cfg.xml 3. jar包截图

1. HibernateUtil.java

Java code?package com.usensor.hibernate.util;     import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration;   public class HibernateUtil {     private static SessionFactory sessionFactory;     public HibernateUtil(){}         static{                 Configuration cfg = new Configuration();                 cfg.configure();//cfg.configure("Hibernate.cfg.xml"),用于读取配置文件                 sessionFactory = cfg.buildSessionFactory();           }         public static SessionFactory getSessionFactory() {             return sessionFactory;         }         public static Session getSession(){             return sessionFactory.openSession();         }         public static void closeSession(Session session){             if(session!=null){                 if(session.isOpen())                     session.close();             }                       }           } 

2. hibernate.cfg.xml

Plain Text code?<?xml version='1.0' encoding='UTF-8'?> <!DOCTYPE hibernate-configuration PUBLIC           "-//Hibernate/Hibernate Configuration DTD 3.0//EN"           "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">   <!-- Generated by MyEclipse Hibernate Tools.                   --> <hibernate-configuration>   <session-factory>     <property name="proxool.pool_alias">proxoolPool</property>     <property name="proxool.xml">WEB-INF/proxoolconf.xml</property>     <property name="hibernate.proxool.existing_pool">true</property>     <property name="connection.provider_class">         org.hibernate.connection.ProxoolConnectionProvider     </property>     <property name="connection.driver_class">         com.mysql.jdbc.Driver     </property>         <property name="connection.characterEncoding">UTF-8</property>     <property name="dialect">         org.hibernate.dialect.MySQLDialect     </property>     <property name="connection.url"></property>     <mapping resource="com/usensor/user/entity/UsrUser.hbm.xml" />     <mapping resource="com/usensor/user/entity/UsrAdmin.hbm.xml" />     <mapping resource="com/usensor/feed/entity/FeedInfo.hbm.xml" />     <mapping resource="com/usensor/feed/entity/FeedDatastream.hbm.xml" />     <mapping resource="com/usensor/feed/entity/FeedData.hbm.xml" />     <mapping resource="com/usensor/utils/entity/MngNotice.hbm.xml" />     <mapping resource="com/usensor/user/entity/UsrFavfeed.hbm.xml" />     <mapping resource="com/usensor/user/entity/UsrMsg.hbm.xml" />     <mapping resource="com/usensor/utils/entity/Searchkey.hbm.xml" />     <mapping resource="com/usensor/feed/entity/FeedTriggers.hbm.xml" />     <mapping resource="com/usensor/user/entity/UsrPubfeed.hbm.xml" />     <mapping resource="com/usensor/app/entity/MngApplication.hbm.xml" />     <mapping resource="com/usensor/feed/entity/MngRecfeed.hbm.xml" />     <mapping resource="com/usensor/utils/entity/ContactUs.hbm.xml" />     <mapping resource="com/usensor/feed/entity/DelDataBackup.hbm.xml" />     <mapping resource="com/groupus/entity/Group.hbm.xml" />     <mapping resource="com/groupus/entity/Message.hbm.xml" />     <mapping resource="com/groupus/entity/Member.hbm.xml" />     <mapping resource="com/usensor/classify/entity/AppSrt.hbm.xml" />     <mapping resource="com/usensor/classify/entity/UsrCls.hbm.xml" />         <!-- 以下五条是新添加的-->     <mapping resource="com/usensor/archi/entity/Area.hbm.xml" />     <mapping resource="com/usensor/archi/entity/Architecture.hbm.xml" />     <mapping resource="com/usensor/archi/entity/ArchiInfo.hbm.xml" />     <mapping resource="com/usensor/archi/entity/PicInfo.hbm.xml" />     <mapping resource="com/usensor/archi/entity/RouteInfo.hbm.xml" />   </session-factory>   </hibernate-configuration>
不应该啊，这些新的都是自动生成的吧

关了MyEclipse重新打开看看 java.lang.NoClassDefFoundError.couldn't initialize class HibernateUtil

看你写的也没错啊，是不是HibernateUtil的路径有问题呢？ 把tomact work和webapps包中的项目目录删除，重新启动tomact编译