<em>异常</em>内容：org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [org.springframework.scheduling.quartz.CronTriggerBean] for bean with name 'xxx' defined in file [D:\workspace\
Spring定时任务，时不时会爆出这么个<em>异常</em>，请大神解释下是什么原因
2015-12-30 16:00:00,123 ERROR [org.quartz.core.JobRunShell] -
org.springframework.scheduling.quartz.JobMethodInvocationFailedException: Invocation of method 'addTbCdqResultfour' on target class [class com.wind.connector.quartz.RunAddTbCdqResultfour] failed; nested exception is org.hibernate.NonUniqueResultException: query did not return a unique result: 2
at org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean$MethodInvokingJob.executeInternal(MethodInvokingJobDetailFactoryBean.<em>java</em>:269)
at org.springframework.scheduling.quartz.QuartzJobBean.execute(QuartzJobBean.<em>java</em>:86)
at org.quartz.core.JobRunShell.run(JobRunShell.<em>java</em>:202)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.<em>java</em>:525)
Caused by: org.hibernate.NonUniqueResultException: query did not return a unique result: 2
at org.hibernate.impl.AbstractQueryImpl.uniqueElement(AbstractQueryImpl.<em>java</em>:844)
at org.hibernate.impl.AbstractQueryImpl.uniqueResult(AbstractQueryImpl.<em>java</em>:835)
at com.wind.daoImpl.BaseDaoImpl.uniqueQuery(BaseDaoImpl.<em>java</em>:46)
at com.wind.daoImpl.TbCdqResultfourDaoImpl.getCdqResultByBeginDate(TbCdqResultfourDaoImpl.<em>java</em>:68)
at com.wind.managerImpl.TbConnectorManagerImpl.addTbCdqResultfour(TbConnectorManagerImpl.<em>java</em>:424)
at com.wind.managerImpl.TbConnectorManagerImpl$$FastClassByCGLIB$$dd5fd868.invoke()
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.<em>java</em>:149)
at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.<em>java</em>:700)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.<em>java</em>:149)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.<em>java</em>:106)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.<em>java</em>:171)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.<em>java</em>:89)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.<em>java</em>:171)
at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.<em>java</em>:635)
at com.wind.managerImpl.TbConnectorManagerImpl$$EnhancerByCGLIB$$24d2f90f.addTbCdqResultfour()
at com.wind.connector.quartz.RunAddTbCdqResultfour.addTbCdqResultfour(RunAddTbCdqResultfour.<em>java</em>:58)
at sun.reflect.GeneratedMethodAccessor185.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.<em>java</em>:25)
at <em>java</em>.lang.reflect.Method.invoke(Method.<em>java</em>:597)
at org.springframework.util.MethodInvoker.invoke(MethodInvoker.<em>java</em>:276)
at org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean$MethodInvokingJob.executeInternal(MethodInvokingJobDetailFactoryBean.<em>java</em>:260)
... 3 more
2015-12-30 16:00:00,124 ERROR [org.quartz.core.ErrorLogger] -
org.quartz.SchedulerException: Job threw an unhandled exception. [See nested exception: org.springframework.scheduling.quartz.JobMethodInvocationFailedException: Invocation of method 'addTbCdqResultfour' on target class [class com.wind.connector.quartz.RunAddTbCdqResultfour] failed; nested exception is org.hibernate.NonUniqueResultException: query did not return a unique result: 2]
at org.quartz.core.JobRunShell.run(JobRunShell.<em>java</em>:213)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.<em>java</em>:525)
Caused by: org.springframework.scheduling.quartz.JobMethodInvocationFailedException: Invocation of method 'addTbCdqResultfour' on target class [class com.wind.connector.quartz.RunAddTbCdqResultfour] failed; nested exception is org.hibernate.NonUniqueResultException: query did not return a unique result: 2
at org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean$MethodInvokingJob.executeInternal(MethodInvokingJobDetailFactoryBean.<em>java</em>:269)
at org.springframework.scheduling.quartz.QuartzJobBean.execute(QuartzJobBean.<em>java</em>:86)
at org.quartz.core.JobRunShell.run(JobRunShell.<em>java</em>:202)
... 1 more
Caused by: org.hibernate.NonUniqueResultException: query did not return a unique result: 2
at org.hibernate.impl.AbstractQueryImpl.uniqueElement(AbstractQueryImpl.<em>java</em>:844)
at org.hibernate.impl.AbstractQueryImpl.uniqueResult(AbstractQueryImpl.<em>java</em>:835)
at com.wind.daoImpl.BaseDaoImpl.uniqueQuery(BaseDaoImpl.<em>java</em>:46)
at com.wind.daoImpl.TbCdqResultfourDaoImpl.getCdqResultByBeginDate(TbCdqResultfourDaoImpl.<em>java</em>:68)
at com.wind.managerImpl.TbConnectorManagerImpl.addTbCdqResultfour(TbConnectorManagerImpl.<em>java</em>:424)
at com.wind.managerImpl.TbConnectorManagerImpl$$FastClassByCGLIB$$dd5fd868.invoke()
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.<em>java</em>:149)
at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.<em>java</em>:700)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.<em>java</em>:149)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.<em>java</em>:106)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.<em>java</em>:171)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.<em>java</em>:89)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.<em>java</em>:171)
at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.<em>java</em>:635)
at com.wind.managerImpl.TbConnectorManagerImpl$$EnhancerByCGLIB$$24d2f90f.addTbCdqResultfour()
at com.wind.connector.quartz.RunAddTbCdqResultfour.addTbCdqResultfour(RunAddTbCdqResultfour.<em>java</em>:58)
at sun.reflect.GeneratedMethodAccessor185.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.<em>java</em>:25)
at <em>java</em>.lang.reflect.Method.invoke(Method.<em>java</em>:597)
at org.springframework.util.MethodInvoker.invoke(MethodInvoker.<em>java</em>:276)
at org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean$MethodInvokingJob.executeInternal(MethodInvokingJobDetailFactoryBean.<em>java</em>:260)
... 3 more
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