在写**.hbm.xml文件时，IDEA 给我报错

<class name="Image" table="t_image" >
    <id name="imageId" column="imageId" type="java.lang.Long">
        <generator class="native"></generator>
    </id>
   
    <property name="imageName" column="imageName" type="java.lang.String" length="30"/>
    <property name="imageUploadDate" column="imageUploadDate" type="java.util.Date"/>
    <many-to-one name="user" column="userId" class="party.infoo.model.User"></many-to-one>

     <discriminator  column="imageType" type="java.lang.String"/>

<subclass name="party.infoo.model.WorkImage"  discriminator-value="http://www.mamicode.com/WorkImage"/>
    <subclass name="party.infoo.model.LifeImage" discriminator-value="http://www.mamicode.com/LifeImage"/>
</class>

查看了一下DTD源文件，发现

<discriminator  column="imageType" type="java.lang.String"/>   不是写在这里的     

顺序应该放在  应该在前面   

<!ELEMENT class (
   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)*
)>   

  必须按照 , 隔开的顺序来写呀      

DTD