org.hibernate.MappingException: No Dialect mapping for JDBC type: -1(一)

Hibernate 报错:
[java]
org.springframework.beans.factory.BeanCreationException: Error creating bean with name '/category' defined in file [D:\MyEclipse\tomcat\Tomcat6.0\webapps\music\WEB-INF\classes\applicationContext-actions.xml]: Cannot resolve reference to bean 'categoryManager' while setting bean property 'categoryManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'categoryManager' defined in file [D:\MyEclipse\tomcat\Tomcat6.0\webapps\music\WEB-INF\classes\applicationContext-beans.xml]: Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in file [D:\MyEclipse\tomcat\Tomcat6.0\webapps\music\WEB-INF\classes\applicationContext-common.xml]: Invocation of init method failed; nested exception is org.hibernate.MappingException: No Dialect mapping for JDBC type: -1
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:275)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveva lueIfNecessary(BeanDefinitionValueResolver.java:104)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1245)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1010)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:472)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
at java.security.AccessController.doPrivileged(Native Method)