今天上生产发现warn日志有异常，就查看了下：
2018-12-05 10:05:05.666 [pool-4-thread-1] ERROR org.springframework.batch.core.step.AbstractStep[229]: Encountered an error executing step cdcCommonFriendsStep in job cdcCommonFriendsJob org.springframework.dao.InvalidDataAccessApiUsageException: Provided id of the wrong type for class com.aspirecn.batch.domain.CDCCommonFriends. Expected: class com.aspirecn.batch.domain.CDCCommonFriendsID, got class java.lang.Long; nested exception is java.lang.IllegalArgumentException: Provided id of the wrong type for class com.aspirecn.batch.domain.CDCCommonFriends. Expected: class com.aspirecn.batch.domain.CDCCommonFriendsID, got class java.lang.Long at org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:384) ~[spring-orm-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:246) ~[spring-orm-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:503) ~[spring-orm-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:59) ~[spring-tx-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:209) ~[spring-tx-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:147) ~[spring-tx-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:133) ~[spring-data-jpa-1.11.9.RELEASE.jar:?] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) ~[spring-aop-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:57) ~[spring-data-commons-1.13.9.RELEASE.jar:?] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213) ~[spring-aop-4.3.13.RELEASE.jar:4.3.13.RELEASE] at com.sun.proxy.$Proxy88.findOne(Unknown Source) ~[?:?] at com.aspirecn.service.impl.CDCCommonFriendsServiceImpl.saveCDCCommonFriends(CDCCommonFriendsServiceImpl.java:27) ~[cdc-authdata-batch-1.0.7-SNAPSHOT.jar:1.0.7-SNAPSHOT] at com.aspirecn.batch.writer.CDCCommonFriendsWriter.write(CDCCommonFriendsWriter.java:23) ~[cdc-authdata-batch-1.0.7-SNAPSHOT.jar:1.0.7-SNAPSHOT] at org.springframework.batch.core.step.item.SimpleChunkProcessor.writeItems(SimpleChunkProcessor.java:175) ~[spring-batch-core-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.batch.core.step.item.SimpleChunkProcessor.doWrite(SimpleChunkProcessor.java:151) ~[spring-batch-core-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.batch.core.step.item.SimpleChunkProcessor.write(SimpleChunkProcessor.java:274) ~[spring-batch-core-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.batch.core.step.item.SimpleChunkProcessor.process(SimpleChunkProcessor.java:199) ~[spring-batch-core-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.batch.core.step.item.ChunkOrientedTasklet.execute(ChunkOrientedTasklet.java:75) ~[spring-batch-core-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.batch.core.step.tasklet.TaskletStep$ChunkTransactionCallback.doInTransaction(TaskletStep.java:406) ~[spring-batch-core-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.batch.core.step.tasklet.TaskletStep$ChunkTransactionCallback.doInTransaction(TaskletStep.java:330) ~[spring-batch-core-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:133) ~[spring-tx-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.batch.core.step.tasklet.TaskletStep$2.doInChunkContext(TaskletStep.java:272) ~[spring-batch-core-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.batch.core.scope.context.StepContextRepeatCallback.doInIteration(StepContextRepeatCallback.java:81) ~[spring-batch-core-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.batch.repeat.support.RepeatTemplate.getNextResult(RepeatTemplate.java:374) ~[spring-batch-infrastructure-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.batch.repeat.support.RepeatTemplate.executeInternal(RepeatTemplate.java:215) ~[spring-batch-infrastructure-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.batch.repeat.support.RepeatTemplate.iterate(RepeatTemplate.java:144) ~[spring-batch-infrastructure-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.batch.core.step.tasklet.TaskletStep.doExecute(TaskletStep.java:257) ~[spring-batch-core-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.batch.core.step.AbstractStep.execute(AbstractStep.java:200) ~[spring-batch-core-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.batch.core.job.SimpleStepHandler.handleStep(SimpleStepHandler.java:148) ~[spring-batch-core-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.batch.core.job.flow.JobFlowExecutor.executeStep(JobFlowExecutor.java:64) ~[spring-batch-core-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.batch.core.job.flow.support.state.StepState.handle(StepState.java:67) ~[spring-batch-core-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.batch.core.job.flow.support.SimpleFlow.resume(SimpleFlow.java:169) ~[spring-batch-core-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.batch.core.job.flow.support.SimpleFlow.start(SimpleFlow.java:144) ~[spring-batch-core-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.batch.core.job.flow.FlowJob.doExecute(FlowJob.java:134) ~[spring-batch-core-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.batch.core.job.AbstractJob.execute(AbstractJob.java:306) ~[spring-batch-core-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.batch.core.launch.support.SimpleJobLauncher$1.run(SimpleJobLauncher.java:135) ~[spring-batch-core-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50) ~[spring-core-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.batch.core.launch.support.SimpleJobLauncher.run(SimpleJobLauncher.java:128) ~[spring-batch-core-3.0.8.RELEASE.jar:3.0.8.RELEASE] at sun.reflect.GeneratedMethodAccessor43.invoke(Unknown Source) ~[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_181] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_181] at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:333) ~[spring-aop-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) ~[spring-aop-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration$PassthruAdvice.invoke(SimpleBatchConfiguration.java:127) ~[spring-batch-core-3.0.8.RELEASE.jar:3.0.8.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213) ~[spring-aop-4.3.13.RELEASE.jar:4.3.13.RELEASE] at com.sun.proxy.$Proxy90.run(Unknown Source) ~[?:?] at com.aspirecn.batch.quartz.CDCCommonFirScheduledTasks.totalSyncTask(CDCCommonFirScheduledTasks.java:32) ~[cdc-authdata-batch-1.0.7-SNAPSHOT.jar:1.0.7-SNAPSHOT] at sun.reflect.GeneratedMethodAccessor48.invoke(Unknown Source) ~[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_181] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_181] at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:65) ~[spring-context-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) ~[spring-context-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81) ~[spring-context-4.3.13.RELEASE.jar:4.3.13.RELEASE] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_181] at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_181] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) ~[?:1.8.0_181] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) ~[?:1.8.0_181] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_181] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_181] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_181] Caused by: java.lang.IllegalArgumentException: Provided id of the wrong type for class com.aspirecn.batch.domain.CDCCommonFriends. Expected: class com.aspirecn.batch.domain.CDCCommonFriendsID, got class java.lang.Long at org.hibernate.jpa.spi.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:1100) ~[hibernate-entitymanager-5.0.12.Final.jar:5.0.12.Final] at org.hibernate.jpa.spi.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:1039) ~[hibernate-entitymanager-5.0.12.Final.jar:5.0.12.Final] at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source) ~[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_181] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_181] at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:298) ~[spring-orm-4.3.13.RELEASE.jar:4.3.13.RELEASE] at com.sun.proxy.$Proxy82.find(Unknown Source) ~[?:?] at org.springframework.data.jpa.repository.support.SimpleJpaRepository.findOne(SimpleJpaRepository.java:241) ~[spring-data-jpa-1.11.9.RELEASE.jar:?] at sun.reflect.GeneratedMethodAccessor60.invoke(Unknown Source) ~[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_181] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_181] at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.executeMethodOn(RepositoryFactorySupport.java:520) ~[spring-data-commons-1.13.9.RELEASE.jar:?] at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:505) ~[spring-data-commons-1.13.9.RELEASE.jar:?] at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:477) ~[spring-data-commons-1.13.9.RELEASE.jar:?] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:56) ~[spring-data-commons-1.13.9.RELEASE.jar:?] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) ~[spring-tx-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282) ~[spring-tx-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) ~[spring-tx-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136) ~[spring-tx-4.3.13.RELEASE.jar:4.3.13.RELEASE] ... 60 more Caused by: org.hibernate.TypeMismatchException: Provided id of the wrong type for class com.aspirecn.batch.domain.CDCCommonFriends. Expected: class com.aspirecn.batch.domain.CDCCommonFriendsID, got class java.lang.Long at org.hibernate.event.internal.DefaultLoadEventListener.checkIdClass(DefaultLoadEventListener.java:166) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final] at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:86) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final] at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1129) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final] at org.hibernate.internal.SessionImpl.access$2600(SessionImpl.java:164) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final] at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.load(SessionImpl.java:2696) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final] at org.hibernate.internal.SessionImpl.get(SessionImpl.java:975) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final] at org.hibernate.jpa.spi.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:1075) ~[hibernate-entitymanager-5.0.12.Final.jar:5.0.12.Final] at org.hibernate.jpa.spi.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:1039) ~[hibernate-entitymanager-5.0.12.Final.jar:5.0.12.Final] at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source) ~[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_181] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_181] at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:298) ~[spring-orm-4.3.13.RELEASE.jar:4.3.13.RELEASE] at com.sun.proxy.$Proxy82.find(Unknown Source) ~[?:?] at org.springframework.data.jpa.repository.support.SimpleJpaRepository.findOne(SimpleJpaRepository.java:241) ~[spring-data-jpa-1.11.9.RELEASE.jar:?] at sun.reflect.GeneratedMethodAccessor60.invoke(Unknown Source) ~[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_181] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_181] at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.executeMethodOn(RepositoryFactorySupport.java:520) ~[spring-data-commons-1.13.9.RELEASE.jar:?] at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:505) ~[spring-data-commons-1.13.9.RELEASE.jar:?] at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:477) ~[spring-data-commons-1.13.9.RELEASE.jar:?] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:56) ~[spring-data-commons-1.13.9.RELEASE.jar:?] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) ~[spring-tx-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282) ~[spring-tx-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) ~[spring-tx-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.13.RELEASE.jar:4.3.13.RELEASE] at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136) ~[spring-tx-4.3.13.RELEASE.jar:4.3.13.RELEASE] ... 60 more
异常信息意思还是很容易懂的，就是提供的Id的类错误
报错的代码如下：
CDCCommonFriends dto =cdcCommonFriendsRepository.findOne(phone);//此处的phone 是Long类型的
这个findOne方法是JPA底层提供的。
而我的CDCCommonFriendsRepository类是这么定义的
public interface CDCCommonFriendsRepository extends CrudRepository<CDCCommonFriends,Long> { }
CrudRepository这个接口泛型的第一个参数是对应的类，第二个参数是该类的ID
但我的CDCCommonFriends类定义了联合主键：
@Data @Entity @Table(name="××××") @IdClass(value=CDCCommonFriendsID.class) public class CDCCommonFriends { @Id private Long phone; private String cfs_cnt; @Id private String source; private Date created_date; }
所以CDCCommonFriendsRepository类定义时传入的Id错了。
修改代码如下：
public interface CDCCommonFriendsRepository extends CrudRepository<CDCCommonFriends,CDCCommonFriendsID> { }
修改调用时出入的参数：
CDCCommonFriendsID id = new CDCCommonFriendsID();
id.setPhone(commonFriends.getPhone()); id.setSource(commonFriends.getSource()); dto =cdcCommonFriendsRepository.findOne(id);
问题解决！！！
叶少教你如何写bug！！！