ibernate 的报异常 请教那位大侠帮我解决啊！我找了好久不找到那出错啊！

Question

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Environment - Hibernate 3.2.5
Environment - hibernate.properties not found
Environment - Bytecode provider name : cglib
Environment - using JDK 1.4 java.sql.Timestamp handling
Configuration - configuring from resource: /hibernate.cfg.xml
Configuration - Configuration resource: /hibernate.cfg.xml
Configuration - Reading mappings from resource : com/ghc/date/bean/Empt.hbm.xml
HbmBinder - Mapping class: com.ghc.date.bean.Empt -> EMPT
Configuration - Configured SessionFactory: null
%%%% Error Creating SessionFactory %%%%
org.hibernate.MappingException: Association references unmapped class: com.ghc.date.bean.Empdept
at org.hibernate.cfg.HbmBinder.bindCollectionSecondPass(HbmBinder.java:2380)
at org.hibernate.cfg.HbmBinder$CollectionSecondPass.secondPass(HbmBinder.java:2662)
at org.hibernate.cfg.CollectionSecondPass.doSecondPass(CollectionSecondPass.java:43)
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1130)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1286)
at com.ghc.SessionFactory.HibernateSessionFactory.<clinit>(HibernateSessionFactory.java:31)
at com.ghc.DaoImpl.EmptImpl.findall(EmptImpl.java:52)
at com.ghc.DaoImpl.EmptImpl.main(EmptImpl.java:104)
Configuration - configuring from resource: /hibernate.cfg.xml
Configuration - Configuration resource: /hibernate.cfg.xml
Configuration - Reading mappings from resource : com/ghc/date/bean/Empt.hbm.xml
Mappings - duplicate import: com.ghc.date.bean.Empt->com.ghc.date.bean.Empt
Mappings - duplicate import: com.ghc.date.bean.Empt->Empt
HbmBinder - Mapping class: com.ghc.date.bean.Empt -> EMPT
%%%% Error Creating SessionFactory %%%%
org.hibernate.InvalidMappingException: Could not parse mapping document from resource com/ghc/date/bean/Empt.hbm.xml
at org.hibernate.cfg.Configuration.addResource(Configuration.java:569)
at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1587)
at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1555)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1534)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1508)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1428)
at com.ghc.SessionFactory.HibernateSessionFactory.rebuildSessionFactory(HibernateSessionFactory.java:69)
at com.ghc.SessionFactory.HibernateSessionFactory.getSession(HibernateSessionFactory.java:53)
at com.ghc.DaoImpl.EmptImpl.findall(EmptImpl.java:52)
at com.ghc.DaoImpl.EmptImpl.main(EmptImpl.java:104)
Caused by: org.hibernate.DuplicateMappingException: Duplicate collection role mapping com.ghc.date.bean.Empt.empdepts
at org.hibernate.cfg.Mappings.addCollection(Mappings.java:124)
at org.hibernate.cfg.HbmBinder.createClassProperties(HbmBinder.java:2066)
at org.hibernate.cfg.HbmBinder.createClassProperties(HbmBinder.java:2041)
at org.hibernate.cfg.HbmBinder.bindRootPersistentClassCommonValues(HbmBinder.java:359)
at org.hibernate.cfg.HbmBinder.bindRootClass(HbmBinder.java:273)
at org.hibernate.cfg.HbmBinder.bindRoot(HbmBinder.java:144)
at org.hibernate.cfg.Configuration.add(Configuration.java:669)
at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:504)
at org.hibernate.cfg.Configuration.addResource(Configuration.java:566)
... 9 more
Exception in thread "main" java.lang.NullPointerException
at com.ghc.DaoImpl.EmptImpl.findall(EmptImpl.java:53)
at com.ghc.DaoImpl.EmptImpl.main(EmptImpl.java:104)

Answer 1

Mapping配制文件有问题。Mapping文件格式有错误，无法正常转换
org.hibernate.InvalidMappingException: Could not parse mapping document from resource com/ghc/date/bean/Empt.hbm.xml com.ghc.date.bean.Empdept类没有被Map
org.hibernate.MappingException: Association references unmapped class: com.ghc.date.bean.Empdept 主要问题是出在了com/ghc/date/bean/Empt.hbm.xml这个文件上。再细找找错误吧，你给出的错误信息只能了解到这些。

Answer 2

我晓得com/ghc/date/bean/Empt.hbm.xml这个上我找了半天 没找到错误啊!!

Answer 3

<?xml version="1.0" encoding="utf-8"?>
<!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 Persistence Tools
-->
<hibernate-mapping>
    <class name="com.ghc.date.bean.Empt" table="EMPT" schema="EMPT">
        <id name="empid" type="java.lang.Long">
            <column name="EMPID" precision="5" scale="0" />
            <generator class="sequence">
            <param name="sequence">sq_empt</param>
            </generator>
        </id>
        <property name="empnum" type="java.lang.String">
            <column name="EMPNUM" length="10" />
        </property>
        <property name="empname" type="java.lang.String">
            <column name="EMPNAME" length="10" />
        </property>
        <property name="empjob" type="java.lang.String">
            <column name="EMPJOB" length="30" />
        </property>
        <property name="empdept" type="java.lang.String">
            <column name="EMPDEPT" length="30" />
        </property>
        <property name="empage" type="java.lang.Long">
            <column name="EMPAGE" precision="2" scale="0" />
        </property>
        <property name="empsex" type="java.lang.Long">
            <column name="EMPSEX" precision="2" scale="0" />
        </property>
        <property name="empsal" type="java.lang.Long">
            <column name="EMPSAL" precision="5" scale="0" />
        </property>
        <set name="empdepts" inverse="true">
            <key>
                <column name="EMPID" precision="5" scale="0" />
            </key>
            <one-to-many class="com.ghc.date.bean.Empdept" />
        </set>
    </class>
</hibernate-mapping>

Answer 4

这是
hibernate.cfg.xml配置文件!  望指教啊!!!
====================================================
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
          "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
          "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"><!-- Generated by MyEclipse Hibernate Tools.                   -->
<hibernate-configuration><session-factory>
<property name="myeclipse.connection.profile">myOracle</property>
<property name="connection.url">
jdbc:oracle:thin:@localhost:1521:ghc
</property>
<property name="connection.username">empt</property>
<property name="connection.password">empt</property>
<property name="connection.driver_class">
oracle.jdbc.driver.OracleDriver
</property>
<property name="dialect">
org.hibernate.dialect.Oracle9Dialect
</property>
<mapping resource="com/ghc/date/bean/Empt.hbm.xml" /></session-factory></hibernate-configuration>

Answer 5

Environment - hibernate.properties not found Configuration - Configured SessionFactory: null Exception in thread "main" java.lang.NullPointerException hibernate属性没找到，导致空指针异常，可能是sessionfactory没配置！

Answer 6

Empdept 这个的mapping呢？做了没，做了也贴出来

Answer 7

<?xml version="1.0" encoding="utf-8"?>
<!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 Persistence Tools
-->
<hibernate-mapping>
    <class name="com.ghc.date.bean.Depa" table="DEPA" schema="EMPT">
        <id name="deptid" type="java.lang.Long">
            <column name="DEPTID" precision="5" scale="0" />
            <generator class="sequence" />
        </id>
        <property name="deptnum" type="java.lang.String">
            <column name="DEPTNUM" length="10" />
        </property>
        <property name="deptname" type="java.lang.String">
            <column name="DEPTNAME" length="30" />
        </property>
        <property name="deptoffice" type="java.lang.String">
            <column name="DEPTOFFICE" length="30" />
        </property>
        <set name="empdepts" inverse="true">
            <key>
                <column name="DEPTID" precision="5" scale="0" />
            </key>
            <one-to-many class="com.ghc.date.bean.Empdept" />
        </set>
    </class>
</hibernate-mapping>

Answer 8

没这个Empdept 这个的mapping啊

Answer 9

<set name="empdepts" inverse="true">
            <key>
                <column name="DEPTID" precision="5" scale="0" />
            </key>
            <one-to-many class="com.ghc.date.bean.Empdept" />
        </set>
你这里用到了Empdept啊，没有他的mapping当然会错，你把它设置了再试试，或者如果你不用就把这部份去掉