Hiberante错误总结汇总
错误1：
[13:50:13,531] [LazyInitializationException,19] - could not initialize proxy - the owning Session was closed org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:56) at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:98) at org.hibernate.proxy.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:158) at com.easou.datastat.key.keyword.entity.DsProvinceInfo$$EnhancerByCGLIB$$d07f34e8.getProvinceName(<generated>) at com.easou.datastat.wap.seauserarea.action.WapSeaUserAreaAction.listWapSeaUserArea(WapSeaUserAreaAction.java:113) at com.easou.datastat.wap.seauserarea.action.WapSeaUserAreaAction.execute(WapSeaUserAreaAction.java:45) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432) at javax.servlet.http.HttpServlet.service(HttpServlet.java:154) at javax.servlet.http.HttpServlet.service(HttpServlet.java:92) at com.caucho.server.dispatch.ServletFilterChain.doFilter(ServletFilterChain.java:106) at com.easou.framework.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:88) at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:70) at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:178) at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:229) at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:268) at com.caucho.server.port.TcpConnection.run(TcpConnection.java:389) at com.caucho.util.ThreadPool.runTasks(ThreadPool.java:507) at com.caucho.util.ThreadPool.run(ThreadPool.java:433) at java.lang.Thread.run(Thread.java:595)ERROR LazyInitializationException:19 - could not initialize proxy - the owning Session was closed
org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed 解决办法: 1. *.hbm.xml中 class项，加上lazy="false"。session在延迟的调用时已经关闭,因为hibernate3默认的class声明 lazy="true"来提高性能。 注意,有些class关联了如(many-to-one其他类),也要确保其他表也是lazy="false"的。 提醒,一般不推荐使用lazy="true",因为如果在类的关联中,容易出现错误。错误2: org.hibernate.DuplicateMappingException: duplicate import: News refers to both com.vitamin.en.manager.news.entity.News and com.vitamin.cn.manager.news.entity.News (try using auto-import="false") at org.hibernate.cfg.Mappings.addImport(Mappings.java:140) at org.hibernate.cfg.HbmBinder.bindPersistentClassCommonValues(HbmBinder.java:577) at org.hibernate.cfg.HbmBinder.bindClass(HbmBinder.java:492) at org.hibernate.cfg.HbmBinder.bindRootClass(HbmBinder.java:236) at org.hibernate.cfg.HbmBinder.bindRoot(HbmBinder.java:109) at org.hibernate.cfg.Configuration.add(Configuration.java:385) at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:426) at org.springframework.orm.hibernate3.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:654) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1059)
解决办法:
1.如她所说,在映射文件的hibernate-mapping元素里添加属性auto-import="false"，看下边解释。 <hibernate-mapping有几个可选的属性： schema属性指明了这个映射的表所在的schema名称。 default-cascade属性指定了默认的级联风格 可取值有 none、save、update。 auto-import属性默认让我们在查询语言中可以使用非全限定名的类名 可取值有 true、false。 package属性指定一个包前缀。>