Question

mapping class org.hibernate.DuplicateMappingException: Duplicate class/entit

为什么我只写一个mapping的时候可以正常运行，但我多添加一个mapping就报错，org.hibernate.DuplicateMappingException: Duplicate class/entity mapping com.model.AddressBook

<mapping class="com.model.AddressBook" />
<mapping class="com.model.CustomsCode" />
<mapping class="com.model.CustomsUnit" />
<property name="hibernate.connection.url">jdbc:sqlserver://localhost:1433;databaseName=test</property>
<property name="hibernate.connection.username">sa</property>
<property name="hibernate.connection.password">sa</property>
<property name="hibernate.dialect">org.hibernate.dialect.SQLServerDialect</property>
<property name="javax.persistence.validation.mode">none</property>
<!-- sql -->
<property name="show_sql">true</property>
<property name="format_sql">true</property>
<!-- c3p0 -->

Answer 1

<mapping class="com.model.AddressBook" />这一句是不是已经有了?重复了?

追问

肯定没有

追答

你可以说下你这个文件是什么文件么? hibernate的那个配置?

能贴下你的java代码么?你是不是配置文件加载了两次?