SessionFactory在karaf中加载错误的配置文件

Question

我正在尝试创建3个捆绑包：

• BundleA:使用非托管本机hibernate访问数据库1。
• BundleB：也可以使用非托管的本机hibernate，但要访问数据库2。
• BundleC：导入BundleA和BundleB

我希望 bundleA 和 bundleB 将获取会话工厂及其配置文件。但是，Hibernate的日志显示 BundleB 使用 BundleA 的配置文件获取会话工厂。

有人能给我一些建议吗？

BundleA的蓝图.xml：

<bean id="dao" class="idv.peayton.osgi.core.bundle1.Dao" init-method="init" />  
<bean id="serviceImpl" class="idv.peayton.osgi.core.bundle1.impl.B1ServiceImpl">
    <property name="dao" ref="dao" />
</bean>
<service id="service" ref="serviceImpl" interface="idv.peayton.osgi.core.bundle1.B1Service" />

BundleA的hibernate.cfg.xml：

<session-factory>
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="hibernate.connection.url">jdbc:mysql://127.0.0.1:3306/se00001?autoReconnect=true</property>
    <property name="hibernate.connection.username">username</property>
    <property name="hibernate.connection.password">password</property>
    <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
    <mapping resource="entity/b1.mapping.xml"/>
</session-factory>

BundleB的蓝图.xml：

<bean id="dao" class="idv.peayton.osgi.core.bundle2.Dao" init-method="init" />  
<bean id="serviceImpl" class="idv.peayton.osgi.core.bundle2.impl.B2ServiceImpl">
    <property name="dao" ref="dao" />
</bean>
<service id="service" ref="serviceImpl" interface="idv.peayton.osgi.core.bundle2.B2Service" />

BundleB的hibernate . CFG . XML:(bundle a的区别是url和映射资源)

<session-factory>
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="hibernate.connection.url">jdbc:mysql://127.0.0.1:3307/m00001?autoReconnect=true</property>
    <property name="hibernate.connection.username">username</property>
    <property name="hibernate.connection.password">password</property>
    <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
    <mapping resource="entity/b2.mapping.xml"/>
</session-factory>

Dao类如下所示：

public void init() {
    logger.info("Initializing session factory...");
    if (sf == null) {
        Bundle bundle = FrameworkUtil.getBundle(Dao.class);
        logger.info("Using bundle: " + bundle);

        BundleContext context = bundle.getBundleContext();
        logger.info("Using context: " + context);

        ServiceReference sr = context.getServiceReference(SessionFactory.class.getName());
        logger.info("Using servRef: " + sr);

        sf = (SessionFactory) context.getService(sr);
        logger.info("SessionFactory is: " + sf);
    }
}

日志如下所示：

2014-05-29 15:33:32,582 | INFO  | Local user karaf | HibernateUtil                    | 206 - peayton-blueprint-core-bundleA - 0.0.1.SNAPSHOT | Initializing session factory...
2014-05-29 15:33:32,582 | INFO  | Local user karaf | HibernateUtil                    | 206 - peayton-blueprint-core-bundleA - 0.0.1.SNAPSHOT | Using bundle: peayton-blueprint-core-bundleA [206]
2014-05-29 15:33:32,582 | INFO  | Local user karaf | HibernateUtil                    | 206 - peayton-blueprint-core-bundleA - 0.0.1.SNAPSHOT | Using context: org.apache.felix.framework.BundleContextImpl@c6e491
2014-05-29 15:33:32,582 | INFO  | Local user karaf | HibernateUtil                    | 206 - peayton-blueprint-core-bundleA - 0.0.1.SNAPSHOT | Using servRef: [org.hibernate.SessionFactory]
2014-05-29 15:33:32,598 | INFO  | Local user karaf | Configuration                    | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000043: Configuring from resource: /hibernate.cfg.xml
2014-05-29 15:33:32,598 | INFO  | Local user karaf | Configuration                    | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000040: Configuration resource: /hibernate.cfg.xml
2014-05-29 15:33:33,707 | INFO  | Local user karaf | Configuration                    | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000221: Reading mappings from resource: entity/b1.mapping.xml
2014-05-29 15:33:35,176 | INFO  | Local user karaf | Configuration                    | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000041: Configured SessionFactory: null
2014-05-29 15:33:35,192 | WARN  | Local user karaf | verManagerConnectionProviderImpl | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000402: Using Hibernate built-in connection pool (not for production use!)
2014-05-29 15:33:35,207 | INFO  | Local user karaf | verManagerConnectionProviderImpl | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000115: Hibernate connection pool size: 20
2014-05-29 15:33:35,207 | INFO  | Local user karaf | verManagerConnectionProviderImpl | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000006: Autocommit mode: false
2014-05-29 15:33:35,207 | INFO  | Local user karaf | verManagerConnectionProviderImpl | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000401: using driver [com.mysql.jdbc.Driver] at URL [jdbc:mysql://127.0.0.1:3306/se00001?autoReconnect=true]
2014-05-29 15:33:35,207 | INFO  | Local user karaf | verManagerConnectionProviderImpl | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000046: Connection properties: {user=username, password=****}
2014-05-29 15:33:35,379 | INFO  | Local user karaf | Dialect                          | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000400: Using dialect: org.hibernate.dialect.MySQLDialect
2014-05-29 15:33:35,426 | INFO  | Local user karaf | TransactionFactoryInitiator      | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000399: Using default transaction strategy (direct JDBC transactions)
2014-05-29 15:33:35,426 | INFO  | Local user karaf | ASTQueryTranslatorFactory        | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000397: Using ASTQueryTranslatorFactory
2014-05-29 15:33:35,598 | INFO  | Local user karaf | HibernateUtil                    | 206 - peayton-blueprint-core-bundleA - 0.0.1.SNAPSHOT | SessionFactory is: org.hibernate.internal.SessionFactoryImpl@1a85af4
2014-05-29 15:33:35,598 | INFO  | Local user karaf | Dao                              | 207 - peayton-blueprint-core-bundleB - 1.0.0.SNAPSHOT | Initializing session factory...
2014-05-29 15:33:35,598 | INFO  | Local user karaf | Dao                              | 207 - peayton-blueprint-core-bundleB - 1.0.0.SNAPSHOT | Using bundle: peayton-blueprint-core-bundleB [207]
2014-05-29 15:33:35,598 | INFO  | Local user karaf | Dao                              | 207 - peayton-blueprint-core-bundleB - 1.0.0.SNAPSHOT | Using context: org.apache.felix.framework.BundleContextImpl@866459
2014-05-29 15:33:35,598 | INFO  | Local user karaf | Dao                              | 207 - peayton-blueprint-core-bundleB - 1.0.0.SNAPSHOT | Using servRef: [org.hibernate.SessionFactory]
2014-05-29 15:33:35,629 | INFO  | Local user karaf | Configuration                    | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000043: Configuring from resource: /hibernate.cfg.xml
2014-05-29 15:33:35,629 | INFO  | Local user karaf | Configuration                    | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000040: Configuration resource: /hibernate.cfg.xml
2014-05-29 15:33:35,863 | INFO  | Local user karaf | Configuration                    | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000221: Reading mappings from resource: entity/b1.mapping.xml
2014-05-29 15:33:37,348 | INFO  | Local user karaf | Configuration                    | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000041: Configured SessionFactory: null
2014-05-29 15:33:37,348 | WARN  | Local user karaf | verManagerConnectionProviderImpl | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000402: Using Hibernate built-in connection pool (not for production use!)
2014-05-29 15:33:37,348 | INFO  | Local user karaf | verManagerConnectionProviderImpl | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000115: Hibernate connection pool size: 20
2014-05-29 15:33:37,348 | INFO  | Local user karaf | verManagerConnectionProviderImpl | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000006: Autocommit mode: false
2014-05-29 15:33:37,348 | INFO  | Local user karaf | verManagerConnectionProviderImpl | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000401: using driver [com.mysql.jdbc.Driver] at URL [jdbc:mysql://127.0.0.1:3306/se00001?autoReconnect=true]
2014-05-29 15:33:37,348 | INFO  | Local user karaf | verManagerConnectionProviderImpl | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000046: Connection properties: {user=username, password=****}
2014-05-29 15:33:37,363 | INFO  | Local user karaf | Dialect                          | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000400: Using dialect: org.hibernate.dialect.MySQLDialect
2014-05-29 15:33:37,363 | INFO  | Local user karaf | TransactionFactoryInitiator      | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000399: Using default transaction strategy (direct JDBC transactions)
2014-05-29 15:33:37,363 | INFO  | Local user karaf | ASTQueryTranslatorFactory        | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000397: Using ASTQueryTranslatorFactory
2014-05-29 15:33:37,363 | INFO  | Local user karaf | Dao                              | 207 - peayton-blueprint-core-bundleB - 1.0.0.SNAPSHOT | SessionFactory is: org.hibernate.internal.SessionFactoryImpl@88dcd7

编辑：为什么我得出这个结论

在bundleA的hibernate.cfg中。xml，我尝试从实体/b1.mapping.xml读取映射文件。在bundleB中，我尝试从entity/b2.mapping.xml读取映射文件。但在日志中，hibernate从entity/b1.mapping读取映射文件。xml，在两个捆绑包中。

捆绑日志数据：

2014-05-29 15:33:33,707 | INFO  | Local user karaf | Configuration                    | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000221: Reading mappings from resource: entity/b1.mapping.xml

捆绑包 B 的日志：

2014-05-29 15:33:35,863 | INFO  | Local user karaf | Configuration                    | 110 - org.jboss.logging.jboss-logging - 3.1.0.GA | HHH000221: Reading mappings from resource: entity/b1.mapping.xml

根据本文档，我通过使用由hibernate-osgi服务导出的SessionFactory服务，在Dao类的init方法中获得会话工厂。在调用getService方法之前，我打印了捆绑包名称以检查我是否得到了错误的捆绑包，但捆绑包名称与我的预期一样。

2014-05-29 15:33:32,582 | INFO  | Local user karaf | HibernateUtil                    | 206 - peayton-blueprint-core-bundleA - 0.0.1.SNAPSHOT | Using bundle: peayton-blueprint-core-bundleA [206]

和

2014-05-29 15:33:35,598 | INFO  | Local user karaf | Dao                              | 207 - peayton-blueprint-core-bundleB - 1.0.0.SNAPSHOT | Using bundle: peayton-blueprint-core-bundleB [207]

我的环境是：

• Apache Karaf 3.0.1
• Hibernate 4.2.12.Final

另外HibernateUtil类是Dao类，我在问这个问题的时候改了名字。抱歉，如果它使任何混乱。:(

Answer 1

在查看了hibernate osgi的代码之后，我得出结论，这是HibernateOSGi类＜code＞org.hibernate.osgi.OsgiSessionFactoryService＜code＞中的一个错误。你应该在那里提交一个bug。

有关详细的解释:来自< code > OsgiSessionFactoryService 的方法< code>getService为您的包提供了< code>SessionFactory实例。然而，由于某些原因，该服务将所有请求会话工厂的包添加到随后搜索配置文件的包中。参见第85行的代码。因此，请求会话工厂的第二个包将总是获得以前的配置。

虽然我没有检查这一点，但我认为您可以通过将您的配置文件放在一个包的不同路径中来绕过这个错误，例如，对于包a，放在< code >/CFG/hibernate . CFG . XML 中。

希望这有帮助。