無法從驅動程序[null]，用戶[null]和URL [null]獲取連接。/EclipseLink 1.2/Spring 2.5.6/OSGI

Question

我嘗試部署一個EclipseLink JPA作爲OSGI平臺上的ORM工具使用的項目。該項目在OSGI容器外運行時工作正常。

使用的版本：2.5.6春天，的EclipseLink 1.2.0

不幸的是，我得到這個錯誤的OSGI平臺上：

Exception Description: Unable to acquire a connection from driver [null], user [null] and URL [null]. Verify that you have set the expected driver class and URL. Check your login, persistence.xml or sessions.xml resource. The jdbc.driver property should be set to a class that is compatible with your database platform 
    at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:290) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:146) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:198) 
    at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:186) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean$ManagedEntityManagerFactoryInvocationHandler.invoke(AbstractEntityManagerFactoryBean.java:434) 
    at $Proxy152.createEntityManager(Unknown Source) 
    at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:190) 
    at $Proxy153.find(Unknown Source) 

未知原因被創建並添加到數據源EclipseLink不檢索org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean

任何想法都是可以接受的嗎？

親切的問候，

查爾斯

Answer 1

你檢查數據庫屬性文件是在類路徑？

確保它在那裏。

Answer 2

見，

http://wiki.eclipse.org/EclipseLink/Examples#OSGi_Examples

確保您的數據源是可訪問的，您的所有的OSGi和Spring配置是否正確。