Weblogic + Spring + eclipselink的JNDI問題

Question

我在Spring 3.0中有一個使用eclipselink作為持久性提供程序的應用程序。 該應用程序在Jetty應用服務器中運行良好，但是在weblogic中部署時卻出現錯誤。 必要的詳細信息如下

Spring xml文件

   <context:property-placeholder location="classpath:jdbc.properties"
    ignore-unresolvable="true" />
    <jee:jndi-lookup id="jndiDataSource" jndi-name="${jndi.name}"
    resource-ref="true" />

<bean id="pum"
    class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager">
    <property name="persistenceXmlLocations">
        <list>
            <value>classpath*:META-INF/persistence.xml</value>
        </list>
    </property>
    <property name="defaultDataSource" ref="jndiDataSource" />
</bean>
        <bean id="entityManagerFactory"
    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="persistenceUnitName" value="my-persistence" />
    <property name="persistenceUnitManager" ref="pum" />
    <property name="jpaDialect" ref="jpaDialect" />
    <property name="jpaVendorAdapter" ref="jpaAdapter" />
    <property name="loadTimeWeaver" ref="loadTimeWeaver" />
</bean>

<bean id="jpaAdapter"
    class="org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter"
    p:databasePlatform="${toplink.database.platform}" p:showSql="true" />

<bean id="jpaDialect"
    class="org.springframework.orm.jpa.vendor.EclipseLinkJpaDialect" />

屬性文件如下

         jdbc.driverClassName=org.postgresql.Driver
         jdbc.url=jdbc:postgresql://localhost:5432/myDB
         jdbc.username=***
         jdbc.password=***

         jndi.name=jndi/myDBjndi
         jndi.resourceRef=true
          jndi.enabled=true

        hibernate.database.platform=org.hibernate.dialect.PostgreSQLDialect
    toplink.database.platform=org.eclipse.persistence.platform.database.PostgreSQLPlatform    

我已經在web.xml中聲明了一個標簽

            <resource-ref>
    <descriptionMy DataSource Reference</description>
    <res-ref-name>jndi/myDBjndi</res-ref-name>
    <res-type>javax.sql.DataSource</res-type>
    <res-auth>Container</res-auth>
</resource-ref>      

以上內容在Jetty中有效，但在Weblogic 10.3.4中，出現以下異常

        ####<Aug 9, 2012 6:19:46 PM CST> <Info> <EclipseLink>  <AdminServer> <[ACTIVE] ExecuteThread: '5' for queue: 'weblogic.kernel.Default (self-tuning)'> <<anonymous>> <> <f637fb3f44bc7f84:-2787ac98:1390ae3403e:-8000-000000000000001e> <1344507586988> <BEA-2005000> <2012-08-09 18:19:46.988--ServerSession(57821834)--Connection(55507026)--connecting(DatabaseLogin(
platform=>PostgreSQLPlatform
user name=> ""
datasource URL=> "null"))> 
        ####<Aug 9, 2012 6:19:47 PM CST> <Alert> <EclipseLink> <AdminServer> <  [ACTIVE] ExecuteThread: '5' for queue: 'weblogic.kernel.Default (self-tuning)'> <<anonymous>> <> <f637fb3f44bc7f84:-2787ac98:1390ae3403e:-8000-000000000000001e> <1344507587003> <BEA-2005000> <2012-08-09 18:19:47.003--ServerSession(57821834)--Local Exception Stack: 
               Exception [EclipseLink-4021] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): 
            org.eclipse.persistence.exceptions.DatabaseException
            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.exceptions.DatabaseException.unableToAcquireConnectionFromDriverException(DatabaseException.java:376)
at org.eclipse.persistence.sessions.DefaultConnector.connect(DefaultConnector.java:91)
at org.eclipse.persistence.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:162)
at org.eclipse.persistence.internal.databaseaccess.DatasourceAccessor.connectInternal(DatasourceAccessor.java:330)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.connectInternal(DatabaseAccessor.java:293)

知道我在做什么錯嗎？

Answer 1

這是因為像weblogic這樣的Java EE容器會自動檢測/META-INF文件夾中分配的persistence.xml文件並預加載Persistence Unit （使用內置實現），但是不了解在休眠級別設置的JPA屬性的線索。 持久性單元只能由Spring捆綁引導，因此將文件重命名為其他名稱可以解決問題。