请问Hibernate的mapping设置映射关系。是不是必须要设置主键属性呢？

wangjianEgg

例如数据库springuser里三个属性。id username password  
id 是主键。

<hibernate-mapping>
    <class name="com.gc.vo.User" table="springuser">
        <id name="id" type="string" unsaved-value="null">
            <column name="id" sql-type="char(32)"/>
            <generator class="uuid.hex"/>
        <property name="username" type="String" column="USERNAME" />
        <property name="password" type="String" column="PASSWORD" />
    </class>
</hibernate-mapping>


现在springuser表里只有username,password两个属性。

<hibernate-mapping>
    <class name="com.gc.vo.User" table="springuser">
        <property name="username" type="String" column="USERNAME" />
        <property name="password" type="String" column="PASSWORD" />
    </class>
</hibernate-mapping>

mapping这样为什么会报错....我表里没建立主键！怎么才能不报错误...

wangjianEgg

严重: Error parsing XML: XML InputStream(12)
The content of element type "class" must match "(meta*,subselect?,cache?,synchronize*,comment?,tuplizer*,(id|composite-id),discriminator?,natural-id?,(version|timestamp)?,(property|many-to-one|one-to-one|component|dynamic-component|properties|any|map|set|list|bag|idbag|array|primitive-array)*,((join*,subclass*)|joined-subclass*|union-subclass*),loader?,sql-insert?,sql-update?,sql-delete?,filter*,resultset*,(query|sql-query)*)".

org.hibernate.MappingException: Could not read mappings from resource: com/gc/vo/User.hbm.xml
        at org.hibernate.cfg.Configuration.addResource(Configuration.java:51
        at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1506)
        at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1474)
        at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1453)
        at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1427)
        at org.hibernate.cfg.Configuration.configure(Configuration.java:1347)
        at org.hibernate.cfg.Configuration.configure(Configuration.java:1333)
        at com.gc.vo.TestHibernate.main(TestHibernate.java:12)

这个错误是怎么回事？希望能帮我解释一下。

快乐的土豆

<hibernate-mapping>
    <class name="com.gc.vo.User" table="springuser">
        <id name="id" type="string" unsaved-value="null">
            <column name="id" sql-type="char(32)"/>
            <generator class="uuid.hex"/>
        <property name="username" type="String" column="USERNAME" />
        <property name="password" type="String" column="PASSWORD" />
    </class>
</hibernate-mapping>

=====>

<hibernate-mapping>
    <class name="com.gc.vo.User" table="springuser">
        <id name="id" type="string" unsaved-value="null">
            <column name="id" sql-type="char(32)"/>
            <generator class="uuid.hex"/>
     </id>  
        <property name="username" type="String" column="USERNAME" />
        <property name="password" type="String" column="PASSWORD" />
    </class>
</hibernate-mapping>

不应该报这么一个错误呀。

wangjianEgg

但是确实出现了....

我现在郁闷死了....

Hibernate配置真能玩死我....我都照着CU以前说过的配置方法配置的！

有些设置我改了改.....总是出错误啊！