hibernate映射

我用hibernate写了两个映射文件：
UserServices.hbm.xml文件在com.tianlw.oss.user.pojo包下
Pricing.hbm.xml文件在com.tianlw.oss.pricing.pojo包下以下是两个映射文件
<?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 package="com.tianlw.oss.user.pojo">
  <class name="UserServices" table="userservices">
     <id name="id" >
        <generator class="native"></generator>
     </id>
     <property name="loginname" not-null="true"></property>
     <property name="loginpassword" not-null="true" ></property>
     <property name="labip" not-null="true" ></property>    
     <property name="status" not-null="true"></property>
     <property name="enrolldate" type="date" not-null="true"></property>
 <property name="closedate" type="date"></property>
 <many-to-one name="user" class="Users" column="userid"></many-to-one>
     <one-to-one name="pricing" class="com.tianlw.oss.pricing.pojo.Pricing" cascade="all" />
  </class>
</hibernate-mapping><?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 package="com.tianlw.oss.pricing.pojo">
  <class name="Pricing" table="pricings">
     <id name="id" >
        <generator class="native"></generator>
     </id>
     <property name="name" not-null="true"  unique="true"></property>
     <property name="basefee" not-null="true" ></property>
     <property name="ratefee" not-null="true" ></property>
     <property name="description"  ></property>
     <many-to-one name="userService"  class="com.tianlw.oss.user.pojo.UserServices" column="priceid" unique="true" lazy="false"></many-to-one>
  </class>
</hibernate-mapping>我用junit测试报以下异常：
org.springframework.dao.InvalidDataAccessResourceUsageException: could not load an entity: [com.tianlw.oss.user.pojo.UserServices#1]; nested exception is org.hibernate.exception.SQLGrammarException: could not load an entity: [com.tianlw.oss.user.pojo.UserServices#1]
Caused by: org.hibernate.exception.SQLGrammarException: could not load an entity: [com.tianlw.oss.user.pojo.UserServices#1]
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:67)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
at org.hibernate.loader.Loader.loadEntity(Loader.java:1865)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:48)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:42)
at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:3038)
at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:395)
at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:375)
at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:139)
at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:195)
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:103)
at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:878)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:815)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:808)
at org.springframework.orm.hibernate3.HibernateTemplate$1.doInHibernate(HibernateTemplate.java:471)
at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:372)
at org.springframework.orm.hibernate3.HibernateTemplate.get(HibernateTemplate.java:465)
at org.springframework.orm.hibernate3.HibernateTemplate.get(HibernateTemplate.java:459)
at com.tianlw.oss.user.dao.BusinessDAOImpl.findById(BusinessDAOImpl.java:41)
at com.tianlw.oss.test.user.BusinessDAOTest.testFindById(BusinessDAOTest.java:41)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
Caused by: java.sql.SQLException: Unknown column 'pricing1_.priceid' in 'field list'
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2847)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1531)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1622)
at com.mysql.jdbc.Connection.execSQL(Connection.java:2376)
at com.mysql.jdbc.Connection.execSQL(Connection.java:2297)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1860)
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1705)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:93)
at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186)
at org.hibernate.loader.Loader.getResultSet(Loader.java:1778)
at org.hibernate.loader.Loader.doQuery(Loader.java:662)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
at org.hibernate.loader.Loader.loadEntity(Loader.java:1851)
... 33 more
请问，是什么原因，该如何改正？谢谢大家