继承于MySQLDialect ，引入 registerHibernateType(Types.LONGVARCHAR, Hibernate.TEXT.getName());

import java.sql.Types;

import org.hibernate.Hibernate;

import org.hibernate.dialect.MySQLDialect;

public class ThisMySQLDialect extends MySQLDialect {

      public ThisMySQLDialect (){

            super();

            registerHibernateType(Types.LONGVARCHAR, Hibernate.TEXT.getName());

          }

}

hibernate 配置修改

<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">

        <property name="dataSource" ref="dataSource"></property>         <property name="hibernateProperties">             <props>                 <prop key="connection.useUnicode">true</prop>                 <prop key="connection.characterEncoding">GBK</prop>                 <prop key="hibernate.dialect">com.yjf.dao. ThisMySQLDialect </prop><!-- org.hibernate.dialect.Oracle9Dialect -->                 <prop key="hibernate.show_sql">true</prop>                    <prop key="hibernate.format_sql">false</prop>             <!--    <prop key="hibernate.hbm2ddl.auto">update</prop>   -->                 <prop key="hibernate.jdbc.batch_size">0</prop>             </props>         </property>         <property name="mappingLocations">             <list>                 <value>classpath:com/yjf/model/hbm/*.hbm.xml</value>             </list>         </property>     </bean>