Hibernate配置过程可能发生的问题及解决方法

1.问题：Exception in thread "main" java.lang.NoClassDefFoundError: org/dom4j/DocumentException

at HibernateTest.main(HibernateTest.java:14)

方法：添加dom4j.jar(解析hibernate.cfg.xml文件)

2．问题：Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory

at org.hibernate.cfg.Configuration.<clinit>(Configuration.java:116)

at HibernateTest.main(HibernateTest.java:14)

方法：添加commons-logging.jar(记录解析过程)

3．问题：Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/collections/SequencedHashMap

方法：添加commons-collections.jar(在解析映射文件时，需要把所有持久化对象的定义放在一个HashMap中)

4．问题：Exception in thread "main" java.lang.NoClassDefFoundError: net/sf/ehcache/CacheException

方法：添加ehcache.jar(高速缓存，提高存取速度)

5．问题：2009-2-22 23:45:40 net.sf.ehcache.config.Configurator configure

警告: No configuration found. Configuring ehcache from ehcache-failsafe.xml found in the classpath: jar:file:/F:/MyJava/Hibernate/lib/ehcache-1.1.jar!/ehcache-failsafe.xml

Exception in thread "main" java.lang.NoClassDefFoundError

方法：把ehcache-1.1.jar解压，把其中的ehcache-failsafe.xml改成ehcache.xml。

6.问题：Caused by: java.lang.ClassNotFoundException: net.sf.cglib.transform.impl.InterceptFieldEnabled

方法：添加cglib-full-2.0.02.jar

7.问题：Caused by: java.lang.NoSuchMethodError: net.sf.cglib.proxy.Enhancer.setInterceptDuringConstruction(Z)V

方法：添加cglib-nodep-2.1_3.jar

8.问题:Exception in thread "main" java.lang.NoClassDefFoundError: javax/transaction/Synchronization

方法:添加jta.jar(事务处理)

9.问题:Exception in thread "main" java.lang.NoClassDefFoundError: antlr/ANTLRException

方法:添加antlr-2.7.5h3.jar

10问题:Caused by: java.sql.SQLException: The statement (1) has no open cursor.

at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2901)

at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:773)

方法: <!-- <property name="jdbc.fetch_size">50 </property>  -->
把上面这个属性按上面这样注释掉就可以了. (如果mysql-connector的版本早于3.2.1而且服务器的版本早于5.0.3,"setFetchSize()"是没有效果的.)