hibernate 问题很急！！！！！！！！！！！

Question

把hbm和做更新的代码发上来看看啊

Answer 1

http://www.blogjava.net/hrcdg/articles/157724.html

Answer 2

User.hbm.xml<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">    
    
<hibernate-mapping>
    <class name="com.digitalcn.entity.UmsUser" table="UMS_USER" schema="HOSP_DBA">
        <id name="adminId" type="long">
            <column name="ADMIN_ID" precision="22" scale="0" />
            <generator class="native"> 
              <param name="sequence">ums_user_adminId</param> 
             </generator>         </id>
        <many-to-one name="eduObject" class="com.digitalcn.entity.EduObject" fetch="select">
            <column name="OBJECT_ID" precision="22" scale="0" />
        </many-to-one>
        <many-to-one name="umsGroup" class="com.digitalcn.entity.UmsGroup" fetch="select">
            <column name="ID" precision="22" scale="0" />
        </many-to-one>
        <property name="account" type="string">
            <column name="ACCOUNT" length="31" />
        </property>
        <property name="password" type="string">
            <column name="PASSWORD" length="63" />
        </property>
        <property name="status" type="long">
            <column name="STATUS" precision="22" scale="0" />
        </property>
        <property name="techType" type="long">
            <column name="TECH_TYPE" precision="22" scale="0" />
        </property>
        <property name="type" type="long">
            <column name="TYPE" precision="22" scale="0" />
        </property>
        <property name="lastLoginTime" type="timestamp">
            <column name="LAST_LOGIN_TIME" length="7" />
        </property>
        <property name="loginTimes" type="long">
            <column name="LOGIN_TIMES" precision="22" scale="0" />
        </property>
        <property name="idClass" type="long">
            <column name="ID_CLASS" precision="22" scale="0" />
        </property>
        <property name="identificationNo" type="string">
            <column name="IDENTIFICATION_NO" length="60" />
        </property>
        <property name="trueName" type="string">
            <column name="TRUE_NAME" length="60" />
        </property>
        <property name="gender" type="long">
            <column name="GENDER" precision="22" scale="0" />
        </property>
        <property name="telephone" type="string">
            <column name="TELEPHONE" length="20" />
        </property>
        <property name="phoneex" type="string">
            <column name="PHONEEX" length="10" />
        </property>
        <property name="fax" type="string">
            <column name="FAX" length="20" />
        </property>
        <property name="postcode" type="string">
            <column name="POSTCODE" length="10" />
        </property>
        <property name="email" type="string">
            <column name="EMAIL" />
        </property>
        <property name="address" type="string">
            <column name="ADDRESS" length="90" />
        </property>
        <property name="mobile" type="string">
            <column name="MOBILE" length="20" />
        </property>
        <property name="createTime" type="timestamp">
            <column name="CREATE_TIME" length="7" />
        </property>
        <property name="msnNum" type="string">
            <column name="MSN_NUM" />
        </property>
        <property name="qqNum" type="string">
            <column name="QQ_NUM" length="20" />
        </property>
        <property name="balance" type="long">
            <column name="BALANCE" precision="8" scale="0" />
        </property>
        <property name="principalship" type="string">
            <column name="PRINCIPALSHIP" length="30" />
        </property>
        <property name="creator" type="string">
            <column name="CREATOR" length="30" />
        </property>
        <property name="introduce" type="string">
            <column name="INTRODUCE" />
        </property>
        <property name="re" type="string">
            <column name="REMARK" />
        </property>
        <set name="umsUserRoles" 
             table="UMS_USER_ROLE" 
             >
            <key>
                <column name="ADMIN_ID"/>
            </key>
           <many-to-many 
            class="com.digitalcn.entity.UmsRole" >
             <column name="ID" not-null="true"/>
           </many-to-many>
            
            
            
        </set>
        
        <one-to-one name="umsUserinfo" class="com.digitalcn.entity.UmsUserinfo" cascade="all" outer-join="true"/>
        
        <set name="eduOrders" inverse="true">
            <key>
                <column name="ADMIN_ID" precision="22" scale="0" />
            </key>
            <one-to-many class="com.digitalcn.entity.EduOrder" />
        </set>
        <!--
          <set name="umsGroup" inverse="true">
            <key>
                <column name="ADMIN_ID" precision="22" scale="0" not-null="true" unique="true" />
            </key>
            <one-to-many class="com.digitalcn.entity.UmsGroup" />
        </set>
        -->
    </class>
</hibernate-mapping>

Answer 3

Userinfo.hbm.xml<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- 
    Mapping file autogenerated by MyEclipse - Hibernate Tools
-->
<hibernate-mapping>
    <class name="com.digitalcn.entity.UmsUserinfo" table="UMS_USERINFO" schema="HOSP_DBA">
        <id name="adminId" type="long">
            <column name="ADMIN_ID" precision="22" scale="0" />
             <generator class="foreign"> 
              <param name="property">umsUser</param> 
             </generator> 
        </id>
          <one-to-one name="umsUser" class="com.digitalcn.entity.UmsUser" cascade="all" constrained="true"/>
        
        
        
        <property name="type" type="long">
            <column name="TYPE" precision="22" scale="0" />
        </property>
        <property name="status2" type="long">
            <column name="STATUS2" precision="22" scale="0" />
        </property>
        <property name="createTime" type="timestamp">
            <column name="CREATE_TIME" length="7" />
        </property>
        <property name="adminDesc" type="string">
            <column name="ADMIN_DESC" />
        </property>
        <property name="re" type="string">
            <column name="REMARK" />
        </property>
    </class>
</hibernate-mapping>

Answer 4

更新的时候还是掉的SAVE（）
我也试了掉SAVEORUPDATE（）
还是报同样的错误！
更新的时候我把原来的查出来然后在从新复值
UserInfo表里的主建指定和不指定都包同样的错误！

Answer 5

你是不是new了一个新的PO类？然后把查出来的数据赋值进去，再saveOrUpdate()的？

Answer 6

你的<id>标签少了个属性
<id unsaved-value="0" />
然后用saveOrUpdate();试看看

Answer 7

更新相关的java代码贴出来看看

Answer 8

 public void saveUmsUserinfo(UmsUser user){
   UmsUser ums=(UmsUser)this.getHibernateTemplate().load(UmsUser.class,new Long(user.getAdminId()));
   if(ums.getType()==2)
   {
   Hibernate.initialize(ums.getUmsUserinfo());
   }
 
   this.getHibernateTemplate().saveOrUpdate(user);

Answer 9

Hibernate.initialize(ums.getUmsUserinfo()); 
这个方法看一下

Answer 10

这个是org.hibernate.hibernate包里自带的
用于延时加载的！

Answer 11

我觉得原因就是延时加载的缘故，之前load出来的是个代理，然后没有去加载，你更新进去的时候可能就认为是一样的两个类了
至少a different object with he same identifier value was already associated with the session 就是这个意思，你可以试一下不要去用延时加载看看

Answer 12

这个是从库里那出来的UserInfo里的信息

Answer 13

UmsUser   ums=(UmsUser)this.getHibernateTemplate().load(UmsUser.class,new   Long(user.getAdminId()));
      if(ums.getType()==2)
      {
      Hibernate.initialize(ums.getUmsUserinfo());
      } 
感觉原因是：第1行让ums和session关联了，那么它的 umsUserinfo 属性也已经和session关联了。
Hibernate.initialize(ums.getUmsUserinfo());这个也是让umsUserinfo 属性和session关联。
才会报这样的错误。

Answer 14

只写UmsUser       ums=(UmsUser)this.getHibernateTemplate().load(UmsUser.class,new       Long(user.getAdminId()));
也照样报上边的异常

Answer 15

这个问题经常出现在一对多映射和多对多映射中.解决方法有:把数据库中表之间的关联去掉,只需要进行session.clean()操作就可以解决了，有可能会报出"Found two representations of same collection"， 然后session.refresh(object)最好的解决的方案是使用Hibernate里面自带的merge()方法。