No Dialect mapping for JDBC type:7错误
错误原因,hibernate找不到对应的类型映射,比如7,就是对应Types.REAL

首先:

public class MySQLDialect extends org.hibernate.dialect.MySQLDialect { public MySQLDialect(){super();registerHibernateType(Types.REAL,Hibernate.BIG_INTEGER.getName());registerHibernateType(Types.REAL, Hibernate.FLOAT.getName()); }}

<prop key="hibernate.dialect">    com.cn.common.MySQLDialect</prop>