Java 已在ApacheCamel中的资源本地EntityManager上调用joinTransaction

我是apache camel的新手，我正在测试camel jpa以从表和显示记录进行轮询

下面是主要课程

EntityManagerFactory    entityManagerFactory =  Persistence.createEntityManagerFactory("LoanServicePU");        
CamelContext camelContext = new DefaultCamelContext();

JpaComponent jpa = new JpaComponent();
jpa.setEntityManagerFactory(entityManagerFactory);
JpaTransactionManager myTM=new  JpaTransactionManager();
myTM.setEntityManagerFactory(entityManagerFactory);
jpa.setTransactionManager( myTM );
jpa.setCamelContext(camelContext);
camelContext.addRoutes(new JpaRouteBuilder());
camelContext.addComponent("jpa",jpa);
camelContext.start();
Thread.sleep(10000);
camelContext.stop();
System.out.println("Done");

以下是jparouter类

public void configure() throws Exception {
          from("jpa://com.pns.ab.model.LoanRequest?consumeDelete=false;"
                + "consumer.delay=2000;maxMessagesPerPoll=1000;"
                + "consumer.namedQuery=selectLoanRequests").to("stream:out");
}

我在META-INF下配置了persistence.xml和它，事实上在eclipse中我启动了Java项目，然后设置了JPA方面

persistence.xml

<persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
    <persistence-unit name="LoanServicePU" transaction-type="RESOURCE_LOCAL">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <class>com.pns.ab.model.LoanRequest</class>
       <properties>
       <property name="eclipselink.target-server" value="None"/>
       <property name="javax.persistence.jdbc.driver" value="oracle.jdbc.OracleDriver"/>
       <property name="javax.persistence.jdbc.url" value="jdbc:oracle:thin:@127.0.0.1:1521:xe"/>
       <property name="javax.persistence.jdbc.user" value="vs"/>
       <property name="javax.persistence.jdbc.password" value="vs"/>
       <property name="eclipselink.logging.level" value="INFO"/>
      </properties>
  </persistence-unit>
</persistence>

从日志中

无法注册JTA事务的资源本地EntityManager

我的结论是驼峰路由被部署到JTA事务环境中，但是在persistence.xml中，您可以使用默认的事务类型，即RESOURCE_LOCAL，而不是JTA

编辑：

通过以下设置，我可以使其正常工作：

不要自己初始化EntityManagerFactory和TransactionManager，只需执行以下操作：

final SimpleRegistry registry = new SimpleRegistry();
final CamelContext context = new DefaultCamelContext(registry);
context.addRoutes(new JpaSetupRouteBuilder());
context.start();

在persistence.xml中，将持久性单元重命名为camel，例如：

编辑：

---

或者，也可以使用所述的Spring XML设置。

是的，我使用的是RESOURCE\u LOCAL，因为它是独立的应用程序，没有部署在服务器上。如何为JTA配置JDBC属性。JTA询问数据源您是否可以在问题中添加persistence.xml？

final SimpleRegistry registry = new SimpleRegistry();
final CamelContext context = new DefaultCamelContext(registry);
context.addRoutes(new JpaSetupRouteBuilder());
context.start();

<!-- setting the transaction-type to RESOURCE_LOCAL is optional as this is the default -->
<persistence-unit name="camel" transaction-type="RESOURCE_LOCAL"> 

from("jpa://com.pns.ab.model.LoanRequest?consumeDelete=false"
         + "&consumer.delay=2000;maxMessagesPerPoll=1000"
         + "&consumer.namedQuery=selectLoanRequests"
         + "&persistenceUnit=LoanServicePU")
    .to("stream:out");