小编use*_*224的帖子

我写了一个原生查询

Query query = 
  entityManagerUtil.getEntityManager().createNativeQuery("SELECT c.NodeID,c.Code,c.Name FROM COM_Location c");    
query.getResultList();

但它对我不起作用....

我使用JPA,MSSQL Server 2008和Spring.It当我尝试用pojo类编写JPA查询但它无法执行本机查询时工作正常.

我的配置persistance.xml是这样的

<property name="hibernate.dialect" value="org.hibernate.dialect.SQLServerDialect"/>

任何人都建议我解决问题

我的堆栈跟踪说......

org.springframework.orm.jpa.JpaSystemException: org.hibernate.MappingException: No Dialect mapping for JDBC type: -9; nested exception is javax.persistence.PersistenceException: org.hibernate.MappingException: No Dialect mapping for JDBC type: -9
    at org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:311)
    at org.springframework.orm.jpa.aspectj.JpaExceptionTranslatorAspect.ajc$afterThrowing$org_springframework_orm_jpa_aspectj_JpaExceptionTranslatorAspect$1$18a1ac9(JpaExceptionTranslatorAspect.aj:15)
    at com.iconma.carz.daoimpl.SecurityDaoImpl.getAllLocations(SecurityDaoImpl.java:40)
    at com.iconma.carz.serviceimpl.SecurityServiceImpl.getAllLocations(SecurityServiceImpl.java:31)
    at com.iconma.carz.controllers.SecurityController.getLocations(SecurityController.java:51)
    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 org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:426)
    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:414)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) …

我正在使用red5在我的项目中播放视频,我可以播放本地系统中保存在默认文件夹"streams"中的视频.

现在我想自定义路径并想要从S3获取视频.如何配置red5以使用S3.这是一个好习惯吗？