hibernate中的异常问题

Question

 IllegalArgumentException in class: com.pro.entity.DeviceInformation, getter method of property: id
org.hibernate.PropertyAccessException: 
         IllegalArgumentException occurred calling getter of com.pro.entity.DeviceInformation.id
at org.hibernate.property.BasicPropertyAccessor$BasicGetter.get(BasicPropertyAccessor.java:195)
at org.hibernate.engine.UnsavedValueFactory.getUnsavedIdentifierValue(UnsavedValueFactory.java:67)
at org.hibernate.tuple.PropertyFactory.buildIdentifierProperty(PropertyFactory.java:67)
at org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:147)
at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:457)
at org.hibernate.persister.entity.JoinedSubclassEntityPersister.<init>(JoinedSubclassEntityPersister.java:113)
at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:87)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:261)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1327)
at com.pro.utils.HibernateSessionFactory.openSession(HibernateSessionFactory.java:24)
at com.pro.utils.Test.main(Test.java:11)在数据库中DeviceInformation设置的主键ID为varchar型。有另外一个类其采用复合主键的方式，与DeviceInformation存在 多对一的关系
<composite-id name="id" class="PortConfigurationPK">
         <key-many-to-one
name="device"
class="com.pro.entity.DeviceInformation"
column="Device_Id"
/>
<key-property
name="portNumber"
column="Port_Number"
type="string"
/>
</composite-id>
请高手解决一下，要怎么处理这个异常

Answer 1

有没有人能回答呀？我都弄了一天了，怎么也找不出来数据库字段与Java字段对应有问题。但是如果采用插件生成的又没有问题，奇怪得很

Answer 2

还有多对一的符合主键？那还叫主键么？开玩笑吧！！
        <composite-id name="id" class="com.po.TAclId">
            <key-property name="priType" type="java.lang.Integer">
                <column name="PRI_TYPE" />
            </key-property>
            <key-property name="accId" type="java.lang.Integer">
                <column name="ACC_ID" />
            </key-property>
            <key-property name="roleId" type="java.lang.Integer">
                <column name="ROLE_ID" />
            </key-property>
            <key-property name="modId" type="java.lang.Integer">
                <column name="MOD_ID" />
            </key-property>
        </composite-id>