spring hibernate 一些儿常见错误
（一）org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'baseDao' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: net/sf/hibernate/Session java.lang.NoClassDefFoundError: net/sf/hibernate/Session
出现这个错误是粗心造成的，请把
import org.springframework.orm.hibernate.support.HibernateDaoSupport;
该为
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
（二）ERROR [com.yourcompany.model.dao.LoginDAO] - <save failed>
org.springframework.jdbc.BadSqlGrammarException: Hibernate operation: could not insert: [com.yourcompany.model.Login]; bad SQL grammar [insert into mysql__login (name, password) values (?, ?)]; nested exception is java.sql.SQLException: Table 'mysql.mysql__login' doesn't exist
java.sql.SQLException: Table 'mysql.mysql__login' doesn't exist
把hbm文件里面的catalog="'mysql database"去掉即可！
(三) org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in resource [/WEB-INF/dataAccessContext-hibernate.xml] of ServletContext: Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: javax/transaction/TransactionManager
java.lang.NoClassDefFoundError: javax/transaction/TransactionManager
原因：缺少jta.jar 或者是找不到hbm.xml文件导致sessionfactory出错,检查hbm文件路径是否正确,文件是否存在；
（四） Error configuring application listener of class org.springframework.web.context.ContextLoaderListener
试试自己去下一个spring的包，把包里的spring.jar加到项目里去。eclipse生成的时候可能会有些包没有放进去。
