访问 EntityManager 时出错 - openjpa - WAS 自由配置文件

Question

我目前正在 WebSphere Application Server Liberty Profile 8.5.5.7. 上开发一个 openjpa 项目，数据库为 MySQL

在运行期间，当我尝试访问 实体管理器 时，我收到如下错误：

Caused by: javax.ejb.EJBException: See nested exception; nested exception is: java.lang.Exception: See nested Throwable at com.ibm.ejs.container.util.ExceptionUtil.EJBException(ExceptionUtil.java:461) ... 27 more
Caused by: java.lang.Exception: See nested Throwable at com.ibm.ejs.container.util.ExceptionUtil.Exception(ExceptionUtil.java:317) ... 27 more

Caused by: java.lang.AbstractMethodError: org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(Ljavax/persistence/SynchronizationType;Ljava/util/Map;)Ljavax/persistence/EntityManager;
at com.ibm.ws.jpa.container.v21.internal.JPA21Runtime.createEntityManagerInstance(JPA21Runtime.java:104) at [internal classes]

目前我正在使用以下 dependencies:org.apache.openjpa:openjpa-all-2.4.0

在部署期间，我看到以下堆栈跟踪

[err] 458 appname INFO [Default Executor-thread-16] openjpa.jdbc.JDBC - Using dictionary class "org.apache.openjpa.jdbc.sql.MySQLDictionary" (MySQL 5.6.25-0ubuntu0.15.04.1 ,MySQL-AB JDBC Driver mysql-connector-java-5.0.8 ( Revision: ${svn.Revision} )).

[err] 502 appname INFO [Default Executor-thread-16] openjpa.jdbc.JDBC - Connected to MySQL version 5.5 using JDBC driver MySQL-AB JDBC Driver version mysql-connector-java-5.0.8 ( Revision: ${svn.Revision} ).

但这不会中止我的部署过程，我仍然可以使用我的服务。

向 server.xml

添加了以下功能

<featureManager>
    <feature>webProfile-7.0</feature>
    <feature>localConnector-1.0</feature>
    <feature>jndi-1.0</feature>
    <feature>jdbc-4.1</feature>
    <feature>jaxrs-2.0</feature>
    <feature>jpa-2.1</feature>
</featureManager>

假设这是一个兼容性问题，我一直使用旧版本的 openjpa 直到 2.2.1。
禁用了 server.xml
的 jpa-2.1 功能但是运气不好。

非常感谢对上述问题的任何信息/参考/解决方案。谢谢

更新： 感谢更新。将 server.xml 更新为

<featureManager>
    <feature>localConnector-1.0</feature>
    <feature>jndi-1.0</feature>
    <feature>jdbc-4.1</feature>
    <feature>jpa-2.0</feature>
    <feature>jaxrs-2.0</feature>
    <feature>jaxrsClient-2.0</feature>
    <feature>ejbLite-3.2</feature>
</featureManager>

仍然无法选择 EntityManager。

[ERROR ] Error occurred during error handling, give up! nested exception is: javax.ejb.EJBException: See nested exception; nested exception is: java.lang.NullPointerException while invoking public void foo() with params [].
[ERROR ] SRVE0777E: Exception thrown by application class 'org.apache.cxf.interceptor.AbstractFaultChainInitiatorObserver.onMessage:116' java.lang.RuntimeException: org.apache.cxf.interceptor.Fault: nested exception is: javax.ejb.EJBException: See nested exception; nested exception is: java.lang.NullPointerException while invoking public void foo() with params [].
at org.apache.cxf.interceptor.AbstractFaultChainInitiatorObserver.onMessage(AbstractFaultChainInitiatorObserver.java:116) at [internal classes]
Caused by: org.apache.cxf.interceptor.Fault: nested exception is: javax.ejb.EJBException: See nested exception; nested exception is:
java.lang.NullPointerException while invoking public void foo() with params [].
at org.apache.cxf.service.invoker.AbstractInvoker.createFault(AbstractInvoker.java:167)
... 1 more
Caused by: javax.ejb.EJBTransactionRolledbackException: nested exception is: javax.ejb.EJBException: See nested exception; nested exception is: java.lang.NullPointerException at com.ibm.ejs.container.BusinessExceptionMappingStrategy.mapCSIException(BusinessExceptionMappingStrategy.java:124) at [internal classes]

Answer 1

您指定了 jpa-2.1，但 OpenJPA 不支持 JPA 2.1。 WebSphere 附带的 JPA 2.1 提供程序是 EclipseLink。您需要从 persistence.xml 中删除对 OpenJPA 的引用并使用默认的 EclipseLink（尽管有一些 known behavior changes），或者按照 Gas 的建议，您需要将 webProfile-7.0 和 jpa-2.1 替换为jpa-2.0 如果您想继续使用 OpenJPA。

访问 EntityManager 时出错 - openjpa - WAS 自由配置文件

Error while accessing EntityManager - openjpa - WAS liberty profile

java

mysql

openjpa

websphere-liberty