Java JPA、JBoss、Hibernate、Persistence.createEntityManagerFactory返回null

我正在尝试设置一个简单的项目，其中有一个REST服务使用JPA/Hibernate查询数据库。我的平台是Windows、MySQL 5.6和带有hibernate 4.3的JBoss（Wildfly）8。我的项目设置：

PersonApp（EclipseJava企业项目）>PersonApp.ear -PersonData（EclipseJPA项目）>PersonData.jar -PersonRest（Eclipse动态Web项目）>PersonRest.war

PersonData项目包含1个实体类（Person.java），一个管理器类，用于通过EntityManager（PersonManager.java）和persistance.xml创建em.find和em.persist

PersonRest项目包含一个REST服务和一个GET方法，该方法调用PersonManager类来查询所有人员

PersonApp只是一个容器项目，包括PersonData和PersonRest作为模块

现在讨论这个问题：我将PersonApp.ear部署到Wildfly 8（JBoss），并在web浏览器中导航到服务URL。PersonRest服务调用PersonManager类，该类调用Persistence.createEntityManagerFactor（“PersonData”）；这行返回'null'，我不知道为什么

persistence.xml：

<?xml version="1.0" encoding="UTF-8"?>
<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="PersonData" transaction-type="JTA">
        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
        <jta-data-source>java:jboss/datasources/MySqlDS</jta-data-source>
        <class>com.csc.data.Person</class>
        <properties>
            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect"/>
            <property name="hibernate.hbm2ddl.auto" value="create-drop"/>
        </properties>
    </persistence-unit>
</persistence>

REST服务调用上的Wildfly输出：

14:32:06,221 INFO  [org.hibernate.jpa.internal.util.LogHelper] (default task-2) HHH000204: Processing PersistenceUnitInfo [
    name: PersonData
    ...]
14:32:06,236 INFO  [org.hibernate.dialect.Dialect] (default task-2) HHH000400: Using dialect: org.hibernate.dialect.MySQL5Dialect
14:32:06,236 INFO  [org.hibernate.hql.internal.ast.ASTQueryTranslatorFactory] (default task-2) HHH000397: Using ASTQueryTranslatorFactory
14:32:06,252 INFO  [org.hibernate.tool.hbm2ddl.SchemaExport] (default task-2) HHH000227: Running hbm2ddl schema export
14:32:06,268 INFO  [org.hibernate.tool.hbm2ddl.SchemaExport] (default task-2) HHH000230: Schema export complete
14:32:06,300 ERROR [io.undertow.request] (default task-2) UT005023: Exception handling request to /PersonRest/PersonService: org.jboss.resteasy.spi.UnhandledException: java.lang.NullPointerException
    at org.jboss.resteasy.core.ExceptionHandler.handleApplicationException(ExceptionHandler.java:76) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.core.ExceptionHandler.handleException(ExceptionHandler.java:212) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.core.SynchronousDispatcher.writeException(SynchronousDispatcher.java:149) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:372) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:179) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:220) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51) [resteasy-jaxrs-3.0.6.Final.jar:]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) [jboss-servlet-api_3.1_spec-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:113) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.security.handlers.AuthenticationCallHandler.handleRequest(AuthenticationCallHandler.java:52) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:61) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:240) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:227) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:73) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:146) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.server.Connectors.executeRootHandler(Connectors.java:168) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:687) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [rt.jar:1.7.0_51]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [rt.jar:1.7.0_51]
    at java.lang.Thread.run(Unknown Source) [rt.jar:1.7.0_51]
Caused by: java.lang.NullPointerException
    at org.hibernate.engine.transaction.internal.jta.JtaStatusHelper.getStatus(JtaStatusHelper.java:76) [hibernate-core-4.3.1.Final.jar:4.3.1.Final]
    at org.hibernate.engine.transaction.internal.jta.JtaStatusHelper.isActive(JtaStatusHelper.java:118) [hibernate-core-4.3.1.Final.jar:4.3.1.Final]
    at org.hibernate.engine.transaction.internal.jta.CMTTransaction.join(CMTTransaction.java:149) [hibernate-core-4.3.1.Final.jar:4.3.1.Final]
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.joinTransaction(AbstractEntityManagerImpl.java:1602) [hibernate-entitymanager-4.3.1.Final.jar:4.3.1.Final]
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.postInit(AbstractEntityManagerImpl.java:210) [hibernate-entitymanager-4.3.1.Final.jar:4.3.1.Final]
    at org.hibernate.jpa.internal.EntityManagerImpl.<init>(EntityManagerImpl.java:91) [hibernate-entitymanager-4.3.1.Final.jar:4.3.1.Final]
    at org.hibernate.jpa.internal.EntityManagerFactoryImpl.internalCreateEntityManager(EntityManagerFactoryImpl.java:345) [hibernate-entitymanager-4.3.1.Final.jar:4.3.1.Final]
    at org.hibernate.jpa.internal.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:313) [hibernate-entitymanager-4.3.1.Final.jar:4.3.1.Final]
    at com.csc.data.PersonManager.openConnection(PersonManager.java:51) [PersonData.jar:]
    at com.csc.rest.service.PersonService.getAllPersons(PersonService.java:21) [classes:]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_51]
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) [rt.jar:1.7.0_51]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) [rt.jar:1.7.0_51]
    at java.lang.reflect.Method.invoke(Unknown Source) [rt.jar:1.7.0_51]
    at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:137) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:280) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:234) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:221) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:356) [resteasy-jaxrs-3.0.6.Final.jar:]
    ... 29 more

14:32:06221信息[org.hibernate.jpa.internal.util.LogHelper]（默认任务-2）HH000204:处理PersistenceUnitInfo[
姓名：PersonData
...]
14:32:06236信息[org.hibernate.dialogue.dialogue]（默认任务2）HH000400:使用方言：org.hibernate.dialogue.mysql5dialogue
14:32:06236信息[org.hibernate.hql.internal.ast.ASTQueryTranslatorFactory]（默认任务2）HHH000397:使用ASTQueryTranslatorFactory
14:32:06252信息[org.hibernate.tool.hbm2ddl.SchemaExport]（默认任务-2）hh000227:运行hbm2ddl架构导出
14:32:06268信息[org.hibernate.tool.hbm2ddl.SchemaExport]（默认任务2）HH000230:架构导出完成
14:32:06300错误[io.undertow.request]（默认任务2）UT005023:异常处理请求到/PersonRest/PersonService:org.jboss.resteasy.spi.UnhandledException:java.lang.NullPointerException
位于org.jboss.resteasy.core.ExceptionHandler.handleApplicationException（ExceptionHandler.java:76）[resteasy-jaxrs-3.0.6.Final.jar:]
位于org.jboss.resteasy.core.ExceptionHandler.handleException（ExceptionHandler.java:212）[resteasy-jaxrs-3.0.6.Final.jar:]
位于org.jboss.resteasy.core.SynchronousDispatcher.writeException（SynchronousDispatcher.java:149）[resteasy-jaxrs-3.0.6.Final.jar:]
位于org.jboss.resteasy.core.SynchronousDispatcher.invoke（SynchronousDispatcher.java:372）[resteasy-jaxrs-3.0.6.Final.jar:]
位于org.jboss.resteasy.core.SynchronousDispatcher.invoke（SynchronousDispatcher.java:179）[resteasy-jaxrs-3.0.6.Final.jar:]
位于org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service（ServletContainerDispatcher.java:220）[resteasy-jaxrs-3.0.6.Final.jar:]
位于org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service（HttpServletDispatcher.java:56）[resteasy-jaxrs-3.0.6.Final.jar:]
位于org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service（HttpServletDispatcher.java:51）[resteasy-jaxrs-3.0.6.Final.jar:]
在javax.servlet.http.HttpServlet.service（HttpServlet.java:790）[jboss-servlet-api_3.1_spec-1.0.0.Final.jar:1.0.0.Final]
位于io.undertow.servlet.handlers.ServletHandler.HandlerRequest（ServletHandler.java:85）[undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
位于io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.HandlerRequest（ServletSecurityRoleHandler.java:61）[undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
位于io.undertow.servlet.handlers.ServletDispatchingHandler.HandlerRequest（ServletDispatchingHandler.java:36）[undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
位于org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.HandlerRequest（SecurityContextAssociationHandler.java:78）
在io.undertow.server.handlers.PredicateHandler.handleRequest（PredicateHandler.java:25）[undertow-core-1.0.0.Final.jar:1.0.0.Final]
位于io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest（SSLInformationAssociationHandler.java:113）[undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
在io.undertow.security.handlers.AuthenticationCallHandler.HandlerRequest（AuthenticationCallHandler.java:52）[undertow-core-1.0.0.Final.jar:1.0.0.Final]
位于io.undertow.security.handlers.AbstractSecretentityHandler.HandlerRequest（AbstractSecretentityHandler.java:45）[undertow-core-1.0.0.Final.jar:1.0.0.Final]
位于io.undertow.servlet.handlers.security.ServletSecretentityConstraintHandler.HandlerRequest（ServletSecretentityConstraintHandler.java:61）[undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
位于io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.HandlerRequest（CachedAuthenticatedSessionHandler.java:70）[undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
在io.undertow.security.handlers.SecurityInitialHandler.HandlerRequest（SecurityInitialHandler.java:76）[undertow-core-1.0.0.Final.jar:1.0.0.Final]
在io.undertow.server.handlers.PredicateHandler.handleRequest（PredicateHandler.java:25）[undertow-core-1.0.0.Final.jar:1.0.0.Final]
位于org.wildfly.extension.undertow.security.jacc.jaccontextidhandler.handleRequest（jaccontextidhandler.java:61）
在io.undertow.server.handlers.PredicateHandler.handleRequest（PredicateHandler.java:25）[undertow-core-1.0.0.Final.jar:1.0.0.Final]
在io.undertow.server.handlers.PredicateHandler.handleRequest（PredicateHandler.java:25）[undertow-core-1.0.0.Final.jar:1.0.0.Final]
位于io.undertow.servlet.handlers.ServletialHandler.handleFirstRequest（ServletialHandler.java:240）[undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
在io.undertow.servlet.handlers.ServletiInitialHandler.dispatchRequest（ServletiInitialHandler.java:227）[undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
在io.undertow.servlet.handlers.ServletInitialHandler.access$000（ServletInitialHandler
14:32:06,221 INFO  [org.hibernate.jpa.internal.util.LogHelper] (default task-2) HHH000204: Processing PersistenceUnitInfo [
    name: PersonData
    ...]
14:32:06,236 INFO  [org.hibernate.dialect.Dialect] (default task-2) HHH000400: Using dialect: org.hibernate.dialect.MySQL5Dialect
14:32:06,236 INFO  [org.hibernate.hql.internal.ast.ASTQueryTranslatorFactory] (default task-2) HHH000397: Using ASTQueryTranslatorFactory
14:32:06,252 INFO  [org.hibernate.tool.hbm2ddl.SchemaExport] (default task-2) HHH000227: Running hbm2ddl schema export
14:32:06,268 INFO  [org.hibernate.tool.hbm2ddl.SchemaExport] (default task-2) HHH000230: Schema export complete
14:32:06,300 ERROR [io.undertow.request] (default task-2) UT005023: Exception handling request to /PersonRest/PersonService: org.jboss.resteasy.spi.UnhandledException: java.lang.NullPointerException
    at org.jboss.resteasy.core.ExceptionHandler.handleApplicationException(ExceptionHandler.java:76) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.core.ExceptionHandler.handleException(ExceptionHandler.java:212) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.core.SynchronousDispatcher.writeException(SynchronousDispatcher.java:149) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:372) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:179) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:220) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51) [resteasy-jaxrs-3.0.6.Final.jar:]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) [jboss-servlet-api_3.1_spec-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:113) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.security.handlers.AuthenticationCallHandler.handleRequest(AuthenticationCallHandler.java:52) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:61) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:240) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:227) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:73) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:146) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.server.Connectors.executeRootHandler(Connectors.java:168) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:687) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [rt.jar:1.7.0_51]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [rt.jar:1.7.0_51]
    at java.lang.Thread.run(Unknown Source) [rt.jar:1.7.0_51]
Caused by: java.lang.NullPointerException
    at org.hibernate.engine.transaction.internal.jta.JtaStatusHelper.getStatus(JtaStatusHelper.java:76) [hibernate-core-4.3.1.Final.jar:4.3.1.Final]
    at org.hibernate.engine.transaction.internal.jta.JtaStatusHelper.isActive(JtaStatusHelper.java:118) [hibernate-core-4.3.1.Final.jar:4.3.1.Final]
    at org.hibernate.engine.transaction.internal.jta.CMTTransaction.join(CMTTransaction.java:149) [hibernate-core-4.3.1.Final.jar:4.3.1.Final]
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.joinTransaction(AbstractEntityManagerImpl.java:1602) [hibernate-entitymanager-4.3.1.Final.jar:4.3.1.Final]
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.postInit(AbstractEntityManagerImpl.java:210) [hibernate-entitymanager-4.3.1.Final.jar:4.3.1.Final]
    at org.hibernate.jpa.internal.EntityManagerImpl.<init>(EntityManagerImpl.java:91) [hibernate-entitymanager-4.3.1.Final.jar:4.3.1.Final]
    at org.hibernate.jpa.internal.EntityManagerFactoryImpl.internalCreateEntityManager(EntityManagerFactoryImpl.java:345) [hibernate-entitymanager-4.3.1.Final.jar:4.3.1.Final]
    at org.hibernate.jpa.internal.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:313) [hibernate-entitymanager-4.3.1.Final.jar:4.3.1.Final]
    at com.csc.data.PersonManager.openConnection(PersonManager.java:51) [PersonData.jar:]
    at com.csc.rest.service.PersonService.getAllPersons(PersonService.java:21) [classes:]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_51]
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) [rt.jar:1.7.0_51]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) [rt.jar:1.7.0_51]
    at java.lang.reflect.Method.invoke(Unknown Source) [rt.jar:1.7.0_51]
    at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:137) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:280) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:234) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:221) [resteasy-jaxrs-3.0.6.Final.jar:]
    at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:356) [resteasy-jaxrs-3.0.6.Final.jar:]
    ... 29 more