org.hibernate.ObjectNotFoundException: No row with the given identifier exists:

最近在做项目的时候出现了这样的一个错

org.hibernate.ObjectNotFoundException: No row with the given identifier exists: [com.qingfeng.mclassroom.entity.MclassroomAnnex#]
	at org.hibernate.internal.SessionFactoryImpl$1$1.handleEntityNotFound(SessionFactoryImpl.java:253)
	at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:219)
	at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:275)
	at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:151)
	at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1106)

	at org.hibernate.internal.SessionImpl.internalLoad(SessionImpl.java:1025)
	at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:716)
	at org.hibernate.type.EntityType.resolve(EntityType.java:502)
	at org.hibernate.engine.internal.TwoPhaseLoad.doInitializeEntity(TwoPhaseLoad.java:170)
	at org.hibernate.engine.internal.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:144)
	at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:1115)
	at org.hibernate.loader.Loader.processResultSet(Loader.java:973)
	at org.hibernate.loader.Loader.doQuery(Loader.java:921)
	at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:355)
	at org.hibernate.loader.Loader.doList(Loader.java:2554)
	at org.hibernate.loader.Loader.doList(Loader.java:2540)
	at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2370)
	at org.hibernate.loader.Loader.list(Loader.java:2365)
	at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:497)
	at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:387)
	at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:236)
	at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1300)
	at org.hibernate.internal.QueryImpl.list(QueryImpl.java:103)
	at com.qingfeng.common.dao.impl.BaseDaoImpl.retrieveByHQL(BaseDaoImpl.java:490)
	at com.qingfeng.common.dao.impl.BaseDaoImpl.retrieveByHQL(BaseDaoImpl.java:485)
	at com.qingfeng.common.dao.impl.BaseDaoImpl.retrieveByHQL(BaseDaoImpl.java:455)
	at com.qingfeng.mclassroom.service.MclassroomVideoService.getVideosList(MclassroomVideoService.java:48)
	at com.qingfeng.mclassroom.service.MclassroomVideoService$$FastClassBySpringCGLIB$$79be3129.invoke(<generated>)
	at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:649)
	at com.qingfeng.mclassroom.service.MclassroomVideoService$$EnhancerBySpringCGLIB$$eabb57ea.getVideosList(<generated>)
	at com.qingfeng.mclassroom.controller.MclassroomVideosController.getVideoList(MclassroomVideosController.java:93)
	at com.qingfeng.mclassroom.controller.MclassroomVideosController$$FastClassBySpringCGLIB$$60a40d1c.invoke(<generated>)
	at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:717)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
	at org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:52)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:85)
	at com.qingfeng.common.aop.AOPLogger.transaction(AOPLogger.java:104)
	at sun.reflect.GeneratedMethodAccessor69.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:621)
	at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:610)
	at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:68)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:52)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:653)
	at com.qingfeng.mclassroom.controller.MclassroomVideosController$$EnhancerBySpringCGLIB$$7fca4d7e.getVideoList(<generated>)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215)
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:781)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:721)
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:661)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.orm.hibernate4.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:152)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:748)

分析一下错误原因:

   

@Basic
@OneToOne(fetch = FetchType.EAGER)
@JoinColumn(name = "videourl")
public MclassroomAnnex getVideourl() {
    return videourl;
}

在这里做了一对一映射，但是在我的附件表里面并没有与视频表关联的内容，所以找不到自然就报错了。

解决方法:

@Basic
@OneToOne(fetch = FetchType.EAGER)
@JoinColumn(name = "videourl")
@NotFound(action = NotFoundAction.IGNORE)
public MclassroomAnnex getVideourl() {
    return videourl;
}

加上@NotFound(action = NotFoundAction.IGNORE)