hibernate入门的例子,查询出错.

public   void   Query()  
  {  
          String   hql   ="from   examples.Cat   c   where   cat_id   like   '3%'";         //正常(cat_id是主键)  
        //String   hql   ="from   examples.Cat   c   where   name   like   '%name%'";   //使用这句则报下面的错.  
        Query   query   =   psession.createQuery(hql);  
        for   (Iterator   lst   =   query.iterate();   lst.hasNext();)  
        {  
              Cat   c1   =   (Cat)   lst.next();  
              System.out.println(c1.getName());  
        }  
  }  
   
   
  org.hibernate.JDBCException:   could   not   load   an   entity:   [examples.Cat#1]   [select   cat0_.CAT_ID   as   CAT_ID0_,   cat0_.NAME   as   NAME1_0_,   cat0_.sex   as   sex1_0_,   cat0_.weight   as   weight1_0_   from   CAT   cat0_   where   cat0_.CAT_ID=?]  
  at   org.hibernate.util.JDBCExceptionReporter.newJDBCException(JDBCExceptionReporter.java:57)  
  at   org.hibernate.loader.Loader.loadEntity(Loader.java:1105)  
  at   org.hibernate.loader.EntityLoader.load(EntityLoader.java:111)  
  at   org.hibernate.loader.EntityLoader.load(EntityLoader.java:97)  
  at   org.hibernate.persister.BasicEntityPersister.load(BasicEntityPersister.java:2262)  
  at   org.hibernate.event.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:353)  
  at   org.hibernate.event.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:334)  
  at   org.hibernate.event.DefaultLoadEventListener.load(DefaultLoadEventListener.java:159)  
  at   org.hibernate.event.DefaultLoadEventListener.load(DefaultLoadEventListener.java:132)  
  at   org.hibernate.event.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:111)  
  at   org.hibernate.impl.SessionImpl.immediateLoad(SessionImpl.java:1223)  
  at   org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:59)  
  at   org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:80)  
  at   org.hibernate.proxy.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:115)  
  at   examples.Cat$$EnhancerByCGLIB$$e511c641.getName(<generated>)  
  at   cauchy.TestRegion.Query(TestRegion.java:103)  
  at   cauchy.TestRegion.main(TestRegion.java:28)  
  Caused   by:   java.sql.SQLException:   [Microsoft][SQLServer   2000   Driver   for   JDBC]Can't   start   a   cloned   connection   while   in   manual   transaction   mode.  
  at   com.microsoft.jdbc.base.BaseExceptions.createException(Unknown   Source)  
  at   com.microsoft.jdbc.base.BaseExceptions.getException(Unknown   Source)  
  at   com.microsoft.jdbc.base.BaseConnection.getImplConnection(Unknown   Source)  
  at   com.microsoft.jdbc.base.BaseStatement.setupImplConnection(Unknown   Source)  
  at   com.microsoft.jdbc.base.BaseStatement.<init>(Unknown   Source)  
  at   com.microsoft.jdbc.base.BasePreparedStatement.<init>(Unknown   Source)  
  at   com.microsoft.jdbc.base.BaseConnection.prepareStatement(Unknown   Source)  
  at   com.microsoft.jdbc.base.BaseConnection.prepareStatement(Unknown   Source)  
  at   org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:340)  
  at   org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:291)  
  at   org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:80)  
  at   org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:967)  
  at   org.hibernate.loader.Loader.doQuery(Loader.java:338)  
  at   org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:190)  
  at   org.hibernate.loader.Loader.loadEntity(Loader.java:1096)  
  ...   15   more 问题点数：20、回复次数：3Top

1 楼AiQun（爱麇）回复于 2005-06-07 20:18:36 得分 0

同时有两个相同的标题的帖也能发？Top

2 楼xiangqianchong（向前冲）回复于 2005-06-07 22:19:25 得分 0

public   void   Query()  
  {  
          String   hql   ="from   examples.Cat   c   where   cat_id   like   '3%'";         //正常(cat_id是主键)  
        //String   hql   ="from   examples.Cat   c   where   name   like   '%name%'";   //使用这句则报下面的错.  
   
        Query   query   =   psession.createQuery(hql);  
        List   l   =   query   .list();  
        Iterator     lst   =   l.iterator();  
        while   (lst.hasNext())  
        {  
              Cat   c1   =   (Cat)   lst.next();  
              System.out.println(c1.getName());  
        }  
  }  
   
  Top

3 楼AiQun（爱麇）回复于 2005-08-11 22:45:28 得分 20

public   void   Query()  
  {  
          String   hql   ="from   examples.Cat   c   where   cat_id   like   '3%'";         //正常(cat_id是主键)  
        //String   hql   ="from   examples.Cat   c   where   name   like   '%name%'";   //使用这句则报下面的错.  
        List   query   =   psession.createQuery(hql).list();  
        for   (Iterator   lst   =   query.iterate();   lst.hasNext();)  
        {  
              Cat   c1   =   (Cat)   lst.next();  
              System.out.println(c1.getName());  
        }  
  }  
  Top

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• hibernate
• jdbc
• source
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• abstractbatcher
• loader
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