<hibernate-mapping> <class name="com.pojo.Sortp" table="sortp" catalog="shjdc"> <id name="id" type="java.lang.Integer"> <column name="Id" /> <generator class="assigned" /> </id> <property name="name" type="java.lang.String"> <column name="Name" length="40" not-null="true" /> </property> <set name="productses" inverse="true" cascade="all" lazy="true"> <key> <column name="Sortid" not-null="true" /> </key> <one-to-many class="com.pojo.Products" /> </set> </class> </hibernate-mapping>