No Dialect mapping for JDBC type 3错误

 自定义Hibernate Dialect解决createSQLQuery时的decimal,long类型问题

org.hibernate.MappingException: No Dialect mapping for JDBC type: 3

首先建一个类,继承org.hibernate.dialect.DB2Dialect,该类的内容如下:

import java.sql.Types;

import org.hibernate.Hibernate;
import org.hibernate.dialect.DB2Dialect;

public class PmDb2Dialect extends DB2Dialect
{
public PmDb2Dialect()
{
     super();
     registerHibernateType(Types.DECIMAL, Hibernate.BIG_DECIMAL.getName());
}
}

第二步,就是修改hibernate的配置文件hibernate.cfg.xml:

将:

     <property name="hibernate.dialect">
      org.hibernate.dialect.DB2Dialect
     </property>

改为:

     <property name="hibernate.dialect">
      com.yonder.pm.common.PmDb2Dialect
     </property>