如何在Java配置中正确定义Spring集成JpaOutboundGateway?
我试图用JavaConfig替换Spring集成XML配置,但我无法正确定义JpaOutboundGateway。在XML中,我有以下bean定义:如何在Java配置中正确定义Spring集成JpaOutboundGateway?,java,spring,jpa,spring-integration,Java,Spring,Jpa,Spring Integration,我试图用JavaConfig替换Spring集成XML配置,但我无法正确定义JpaOutboundGateway。在XML中,我有以下bean定义: <int-jpa:outbound-channel-adapter id="saveOffer" entity-manager-factory="entityManagerFactory" channel="channel5" flush-size="100" entity-
<int-jpa:outbound-channel-adapter id="saveOffer" entity-manager-factory="entityManagerFactory" channel="channel5"
flush-size="100" entity-class="JobOffer">
<int-jpa:transactional transaction-manager="transactionManager"/>
</int-jpa:outbound-channel-adapter>
我试图在JpaExecutor中使用EntityManager和EntityManager工厂。但在这两种情况下都会引发异常:
2016-09-03 09:20:42.440 ERROR o.s.integration.handler.LoggingHandler : org.springframework.messaging.MessageHandlingException: error occurred in message handler [org.springframework.integration.jpa.outbound.JpaOutboundGateway@1fc306d3]; nested exception is javax.persistence.TransactionRequiredException: No EntityManager with actual transaction available for current thread - cannot reliably process 'merge' call
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:139)
at org.springframework.integration.endpoint.PollingConsumer.handleMessage(PollingConsumer.java:129)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.doPoll(AbstractPollingEndpoint.java:272)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.access$000(AbstractPollingEndpoint.java:58)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:190)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:186)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller$1.run(AbstractPollingEndpoint.java:353)
at org.springframework.integration.util.ErrorHandlingTaskExecutor$1.run(ErrorHandlingTaskExecutor.java:55)
at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50)
at org.springframework.integration.util.ErrorHandlingTaskExecutor.execute(ErrorHandlingTaskExecutor.java:51)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller.run(AbstractPollingEndpoint.java:344)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: javax.persistence.TransactionRequiredException: No EntityManager with actual transaction available for current thread - cannot reliably process 'merge' call
at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:282)
at com.sun.proxy.$Proxy121.merge(Unknown Source)
at org.springframework.integration.jpa.core.DefaultJpaOperations.persistOrMerge(DefaultJpaOperations.java:248)
at org.springframework.integration.jpa.core.DefaultJpaOperations.merge(DefaultJpaOperations.java:215)
at org.springframework.integration.jpa.core.JpaExecutor.executeOutboundJpaOperation(JpaExecutor.java:253)
at org.springframework.integration.jpa.outbound.JpaOutboundGateway.handleRequestMessage(JpaOutboundGateway.java:81)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:109)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:127)
... 19 more
这是需要连接的更复杂的端点之一;我们需要在参考手册中添加一个Java配置示例;我开了一家商店 你可以随时查看,看看需要什么 特别是:
JpaExecutor
应定义为@Bean
txAdviceChain
添加事务建议IntegrationNamespaceUtils.configureTransactionaAttribute
,查看将事务建议(事务属性、属性源、TM等)连接到TransactionInterceptor中所需的内容
@Bean
公共JpaExecutor JpaExecutor(){
JpaExecutor executor=新的JpaExecutor(entityManagerFactory);
执行器。setFlushSize(10);
executor.setEntityClass(JobOffer.class);
返还执行人;
}
@豆子
@ServiceActivator(inputChannel=“channel5”)
公共JpaOutboundGateway保存(JpaExecutor JpaExecutor,PlatformTransactionManager transactionManager)引发异常{
DefaultTransactionAttribute dta=新的DefaultTransactionAttribute();
dta.setPropagationBehavior(TransactionDefinition.PROPAGATION\u需要\u NEW);
dta.setReadOnly(错误);
MatchAlwaysTransactionAttributeSource matas=新的MatchAlwaysTransactionAttributeSource();
matas.setTransactionAttribute(dta);
TransactionInterceptor ic=新TransactionInterceptor();
ic.setTransactionManager(transactionManager);
ic.setTransactionAttributeSource(matas);
List adviceChain=new ArrayList();
adviceChain.add(ic);
JpaOutboundGateway=新的JpaOutboundGateway(jpaExecutor);
gateway.setAdviceChain(adviceChain);
gateway.setProducesReply(false);
返回网关;
}
谢谢您的回答。在这里提问之前,我曾试图分析XML解析器,但我不理解这些事务建议链的内容。。。但也许有了你的建议,我会让它发挥作用。我的“丑陋但有效”版本在下一个答案中。我承认这远不如我所期望的那么直观……使用XML的一个好处当然是——解析器为您做了很多事情。对于java配置,当我们向添加JPA支持时,它将更易于配置。DSL正在5.0版的主项目中推出。
2016-09-03 09:20:42.440 ERROR o.s.integration.handler.LoggingHandler : org.springframework.messaging.MessageHandlingException: error occurred in message handler [org.springframework.integration.jpa.outbound.JpaOutboundGateway@1fc306d3]; nested exception is javax.persistence.TransactionRequiredException: No EntityManager with actual transaction available for current thread - cannot reliably process 'merge' call
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:139)
at org.springframework.integration.endpoint.PollingConsumer.handleMessage(PollingConsumer.java:129)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.doPoll(AbstractPollingEndpoint.java:272)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.access$000(AbstractPollingEndpoint.java:58)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:190)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:186)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller$1.run(AbstractPollingEndpoint.java:353)
at org.springframework.integration.util.ErrorHandlingTaskExecutor$1.run(ErrorHandlingTaskExecutor.java:55)
at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50)
at org.springframework.integration.util.ErrorHandlingTaskExecutor.execute(ErrorHandlingTaskExecutor.java:51)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller.run(AbstractPollingEndpoint.java:344)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: javax.persistence.TransactionRequiredException: No EntityManager with actual transaction available for current thread - cannot reliably process 'merge' call
at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:282)
at com.sun.proxy.$Proxy121.merge(Unknown Source)
at org.springframework.integration.jpa.core.DefaultJpaOperations.persistOrMerge(DefaultJpaOperations.java:248)
at org.springframework.integration.jpa.core.DefaultJpaOperations.merge(DefaultJpaOperations.java:215)
at org.springframework.integration.jpa.core.JpaExecutor.executeOutboundJpaOperation(JpaExecutor.java:253)
at org.springframework.integration.jpa.outbound.JpaOutboundGateway.handleRequestMessage(JpaOutboundGateway.java:81)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:109)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:127)
... 19 more
@Bean
public JpaExecutor jpaExecutor() {
JpaExecutor executor = new JpaExecutor(entityManagerFactory);
executor.setFlushSize(10);
executor.setEntityClass(JobOffer.class);
return executor;
}
@Bean
@ServiceActivator(inputChannel="channel5")
public JpaOutboundGateway save(JpaExecutor jpaExecutor, PlatformTransactionManager transactionManager) throws Exception {
DefaultTransactionAttribute dta = new DefaultTransactionAttribute();
dta.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRES_NEW);
dta.setReadOnly(false);
MatchAlwaysTransactionAttributeSource matas = new MatchAlwaysTransactionAttributeSource();
matas.setTransactionAttribute(dta);
TransactionInterceptor ic = new TransactionInterceptor();
ic.setTransactionManager(transactionManager);
ic.setTransactionAttributeSource(matas);
List<Advice> adviceChain = new ArrayList<>();
adviceChain.add(ic);
JpaOutboundGateway gateway = new JpaOutboundGateway(jpaExecutor);
gateway.setAdviceChain(adviceChain);
gateway.setProducesReply(false);
return gateway;
}