HTTP状态500 - 个createCriteria也不是没有积极的交易

晚上好有效，请你能帮助我解决这些例外，我正在使用休眠3.5从数据库HTTP状态500 - 个createCriteria也不是没有积极的交易

的hibernate.cfg.xml

生成DAO和实体

<hibernate-configuration> 
<session-factory name="SessionFactory"> 
    <property name="hibernate.bytecode.use_reflection_optimizer">false</property> 
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property> 
    <property name="hibernate.connection.password">root</property> 
    <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/automobiles</property> 
    <property name="hibernate.connection.username">root</property> 
    <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property> 
    <property name="hibernate.search.autoregister_listeners">false</property> 
    <property name="hibernate.current_session_context_class">thread</property> 
    <mapping resource="entity/User.hbm.xml" /> 
    <mapping resource="entity/Model.hbm.xml" /> 
    <mapping resource="entity/Manufucturer.hbm.xml" /> 
    <mapping resource="entity/UserOrderCar.hbm.xml" /> 
    <mapping resource="entity/CarPhotos.hbm.xml" /> 
    <mapping resource="entity/Car.hbm.xml" /> 
</session-factory>

DaoClass

public List extractAdminAttributes() { 
    log.debug("extractAdminAttributes"); 
    try { 
     Session session=sessionFactory.getCurrentSession(); 
     List productList = sessionFactory 
       .getCurrentSession() 
       .createCriteria("entity.Car") 
       .setProjection(
         Projections.projectionList() 
           .add(Projections.property("carDesc")) 
           .add(Projections.property("quantity")) 
           .add(Projections.property("price"))).list(); 
     return productList; 

    } catch (RuntimeException re) { 
     log.error("extractAdminAttributes failed", re); 
     throw re; 

    } 

}

和他再是异常的堆栈跟踪：

org.hibernate.HibernateException: createCriteria is not valid without active transaction 
at org.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:340) 
at $Proxy6.createCriteria(Unknown Source) 
at entity.CarHome.extractAdminAttributes(CarHome.java:138) 
at servlets.AdminServlet2.populateAdminView(AdminServlet2.java:65) 
at servlets.AdminServlet2.doGet(AdminServlet2.java:48) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) 
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) 
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) 
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) 
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) 
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936) 
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) 
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) 
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004) 
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589) 
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) 
at java.lang.Thread.run(Thread.java:722)

来源

2013-02-27 Java Player

你需要执行查询之前开始交易，如果你不已经有一个。像这样的东西尝试：

public List extractAdminAttributes() { 
    log.debug("extractAdminAttributes"); 
    try { 
     Session session = sessionFactory.getCurrentSession(); 
     Transaction tx = session.beginTransaction(); 
     List productList = session 
       .createCriteria("entity.Car") 
       .setProjection(
         Projections.projectionList() 
           .add(Projections.property("carDesc")) 
           .add(Projections.property("quantity")) 
           .add(Projections.property("price"))).list(); 

     tx.commit(); 
     return productList; 

    } catch (RuntimeException re) { 
     tx.rollback(); 
     log.error("extractAdminAttributes failed", re); 
     throw re; 
    } 
}

来源

2013-02-27 13:18:48

Spring为我们管理的事务，所以请从春天配置中删除以下行

<property name="hibernate.current_session_context_class">thread</property>

这应该使其工作

来源

2014-09-04 16:56:38

HTTP状态500 - 个createCriteria也不是没有积极的交易

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