错误提示：
Exception in thread "main" org.hibernate.exception.SQLGrammarException: could not fetch initial value for increment generator
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:67)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
at org.hibernate.id.IncrementGenerator.getNext(IncrementGenerator.java:107)
at org.hibernate.id.IncrementGenerator.generate(IncrementGenerator.java:44)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:91)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:186)
at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:175)
at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:530)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:518)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:514)
at hibernatedao.Myuser2DAO.save(Myuser2DAO.java:28)
at HibernateDaoTest.main(HibernateDaoTest.java:24)
Caused by: com.microsoft.sqlserver.jdbc.SQLServerException: 对象名 user' 无效。
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerStatement.getNextResult(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerPreparedStatement.doExecutePreparedStatement(Unknown Source)
hbm.xml代码：
<hibernate-mapping>
<class name="hibernatedao.Myuser2" table="t_myuser2" schema="dbo" catalog="myssh">
<id name="id" type="java.lang.Integer">
<column name="id" />
<generator class="increment" />
</id>
<property name="username" type="java.lang.String">
<column name="username" length="50" not-null="true" />
</property>
<property name="password" type="java.lang.String">
<column name="password" length="50" not-null="true" />
</property>
</class>
</hibernate-mapping>
错误原因一：
要将 <generator class="increment"> </generator>中的"increment"换成"native".
将主键的生成交给数据库来维护。
原因二：对象名不能为“user"
原因三：在SQLServer企业管理器，选中表格，编辑
在底部有一个[标识]，选中是