如何在JBoss AS 7中配置2个持久化提供程序

Question

我对Java很新，对于Java EE来说是新的， 我正在开发一个项目，我想使用2个实现JPA的数据源（MySQL + Cassandra） MySQL和Kundera for Cassandra）。 我的persistence.xml如下：

<?xml version="1.0" encoding="UTF-8"?> 
<persistence xmlns="http://java.sun.com/xml/ns/persistence" 
    version="2.0"> 
    <persistence-unit name="mysqlPU" transaction-type="JTA"> 
     <description>MySQL Persistent Unit</description> 
     <jta-data-source>java:jboss/datasources/MySQLRemote</jta-data-source> 
    <provider>org.hibernate.ejb.HibernatePersistence</provider> 
    <class>com.eventit.entities.Event</class> 
    <class>com.eventit.entities.Group_icon</class> 
    <class>com.eventit.entities.Group</class> 
    <class>com.eventit.entities.User</class> 
    </persistence-unit> 
<persistence-unit name="cassandraPU"> 
    <provider>com.impetus.kundera.KunderaPersistence</provider> 
    <properties> 
     <property name="kundera.nodes" value="10.0.0.13" /> 
     <property name="kundera.port" value="9160" /> 
     <property name="kundera.keyspace" value="KunderaKeyspace" /> 
     <property name="kundera.dialect" value="cassandra" /> 
     <property name="kundera.client.lookup.class" 
      value="com.impetus.client.cassandra.pelops.PelopsClientFactory" /> 
     <property name="kundera.cache.provider.class" 
      value="com.impetus.kundera.cache.ehcache.EhCacheProvider" /> 
     <property name="kundera.cache.config.resource" value="/ehcache-test.xml" /> 
    </properties> 
</persistence-unit> 

，但是当我在JBoss部署我的项目（7.1）我得到以下错误：

02:56:22,428 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-6) MSC00001: Failed to start service jboss.deployment.unit."Event-it5.5.jar".INSTALL: org.jboss.msc.service.StartException in service jboss.deployment.unit."Event-it5.5.jar".INSTALL: Failed to process phase INSTALL of deployment "Event-it5.5.jar" 
at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:119) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final] 
at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.2.GA.jar:1.0.2.GA] 
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.2.GA.jar:1.0.2.GA] 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) [rt.jar:1.7.0_04] 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) [rt.jar:1.7.0_04] 
at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_04] 
Caused by: javax.persistence.PersistenceException: JBAS011466: PersistenceProvider 'com.impetus.kundera.KunderaPersistence' not found 
at org.jboss.as.jpa.processor.PersistenceUnitDeploymentProcessor.lookupProvider(PersistenceUnitDeploymentProcessor.java:555) 
at org.jboss.as.jpa.processor.PersistenceUnitDeploymentProcessor.deployPersistenceUnit(PersistenceUnitDeploymentProcessor.java:295) 
at org.jboss.as.jpa.processor.PersistenceUnitDeploymentProcessor.addPuService(PersistenceUnitDeploymentProcessor.java:258) 
at org.jboss.as.jpa.processor.PersistenceUnitDeploymentProcessor.handleJarDeployment(PersistenceUnitDeploymentProcessor.java:145) 
at org.jboss.as.jpa.processor.PersistenceUnitDeploymentProcessor.deploy(PersistenceUnitDeploymentProcessor.java:120) 
at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:113) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final] 
... 5 more 

mysqlPU工作得很好，但当我添加cassandraPU时，我得到了豁免。 我敢肯定，我正在部署kundera.jar与依赖jboss正确，因为我可以看到在http://127.0.0.1:9990/console/App.html#deployments 罐子在此先感谢，并希望我已经提供了所有必要的。

Answer 1

希望这有助于。

https://groups.google.com/forum/#!msg/kundera-discuss/3-iUJQOShvE/kJihv32IbjYJ

看看。

-Vivek