我在geronimo服务器中部署了一个应用程序,并使用了Hibernate框架。我将C3P0库与它集成在一起,当我像这样在hibernate.cfg.xml中欺骗数据库URL时,它可以完美地工作:
<property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
<property name="hibernate.connection.url">jdbc:oracle:thin:@iddfrvexa.grouperci.com:1574:IDDFRV</property>
<property name="hibernate.connection.username">iqa</property>
<property name="hibernate.connection.password">iqaadmin</property>
<!-- <property name="connection.datasource">java:comp/env/rci_cdofr/jdbc/Datasource</property> -->
<property name="dialect">org.hibernate.dialect.Oracle10gDialect</property>
<property name="show_sql">false</property>
<property name="max_fetch_depth">0</property>
<property name="hibernate.jdbc.factory_class">net.bull.javamelody.HibernateBatcherFactory</property>
<!-- <property name="hibernate.dbcp.validationQuery">SELECT 1 FROM DUAL</property>
<property name="hibernate.dbcp.testOnBorrow">true</property> -->
<!-- c3p0 config http://www.hibernate.org/214.html -->
<property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
<property name="c3p0.min_size">5</property>
<property name="c3p0.max_size">20</property>
<property name="c3p0.timeout">1800</property>
<property name="c3p0.max_statements">50</property>
<property name = "c3p0.testConnectionOnCheckout">true</property>
但是当我像这样使用jndi时:
<property name="connection.datasource">java:comp/env/rci_cdofr/jdbc/Datasource</property>
<property name="dialect">org.hibernate.dialect.Oracle10gDialect</property>
<property name="show_sql">false</property>
<property name="max_fetch_depth">0</property>
<property name="hibernate.jdbc.factory_class">net.bull.javamelody.HibernateBatcherFactory</property>
<!-- c3p0 config http://www.hibernate.org/214.html -->
<property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
<property name="c3p0.min_size">5</property>
<property name="c3p0.max_size">20</property>
<property name="c3p0.timeout">1800</property>
<property name="c3p0.max_statements">50</property>
<property name = "c3p0.testConnectionOnCheckout">true</property>
c3p0不起作用,并且出现了错误。
java.sql.SQLException:无法从服务器获取连接 基础数据库!在 com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:106)在 com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:529) 在 com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:128) 在 org.hibernate.connection.C3P0ConnectionProvider.getConnection(C3P0ConnectionProvider.java:78) 在 org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:84) 在 org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2009) 在 org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1292) 在 com.rcibanque.framework.persistance.hibernate.HibernateUtil。(HibernateUtil.java:45) 在 com.rcibanque.framework.persistance.hibernate.HibernateTransaction.begin(HibernateTransaction.java:62) 在 com.rcibanque.common.application.ReferencesService.loadReferences(ReferencesService.java:52) 在com.rcibanque.common.start.InitServlet.init(InitServlet.java:46) 在javax.servlet.GenericServlet.init(GenericServlet.java:215)在 org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1108) 在 org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1010) 在 org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4413) 在 org.apache.catalina.core.StandardContext.start(StandardContext.java:4723) 在 org.apache.geronimo.tomcat.GeronimoStandardContext.access $ 201(GeronimoStandardContext.java:63) 在 org.apache.geronimo.tomcat.GeronimoStandardContext $ SystemMethodValve.invoke(GeronimoStandardContext.java:398) 在 org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBeforeAfterValve.java:47) 在 org.apache.geronimo.tomcat.GeronimoStandardContext.start(GeronimoStandardContext.java:251) 在 org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:799) 在 org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:779) 在 org.apache.catalina.core.StandardHost.addChild(StandardHost.java:601) 在 org.apache.geronimo.tomcat.TomcatContainer.addContext(TomcatContainer.java:369) 在 org.apache.geronimo.tomcat.TomcatWebAppContext.doStart(TomcatWebAppContext.java:512) 在 org.apache.geronimo.gbean.runtime.GBeanInstance.createInstance(GBeanInstance.java:998) 在 org.apache.geronimo.gbean.runtime.GBeanInstanceState.attemptFullStart(GBeanInstanceState.java:268) 在 org.apache.geronimo.gbean.runtime.GBeanInstanceState.start(GBeanInstanceState.java:102) 在 org.apache.geronimo.gbean.runtime.GBeanInstance.start(GBeanInstance.java:541) 在 org.apache.geronimo.gbean.runtime.GBeanDependency.attemptFullStart(GBeanDependency.java:111) 在 org.apache.geronimo.gbean.runtime.GBeanDependency.addTarget(GBeanDependency.java:146) 在 org.apache.geronimo.gbean.runtime.GBeanDependency $ 1.running(GBeanDependency.java:120) 在 org.apache.geronimo.kernel.basic.BasicLifecycleMonitor.fireRunningEvent(BasicLifecycleMonitor.java:176) 在 org.apache.geronimo.kernel.basic.BasicLifecycleMonitor.access $ 300(BasicLifecycleMonitor.java:44) 在 org.apache.geronimo.kernel.basic.BasicLifecycleMonitor $ RawLifecycleBroadcaster.fireRunningEvent(BasicLifecycleMonitor.java:254) 在 org.apache.geronimo.gbean.runtime.GBeanInstanceState.attemptFullStart(GBeanInstanceState.java:294) 在 org.apache.geronimo.gbean.runtime.GBeanInstanceState.start(GBeanInstanceState.java:102) 在 org.apache.geronimo.gbean.runtime.GBeanInstanceState.startRecursive(GBeanInstanceState.java:124) 在 org.apache.geronimo.gbean.runtime.GBeanInstance.startRecursive(GBeanInstance.java:555) 在 org.apache.geronimo.kernel.basic.BasicKernel.startRecursiveGBean(BasicKernel.java:379) 在 org.apache.geronimo.kernel.config.ConfigurationUtil.startConfigurationGBeans(ConfigurationUtil.java:456) 在 org.apache.geronimo.kernel.config.ConfigurationUtil.startConfigurationGBeans(ConfigurationUtil.java:493) 在 org.apache.geronimo.kernel.config.KernelConfigurationManager.start(KernelConfigurationManager.java:188) 在 org.apache.geronimo.kernel.config.SimpleConfigurationManager.startConfiguration(SimpleConfigurationManager.java:563) 在 org.apache.geronimo.kernel.config.SimpleConfigurationManager.startConfiguration(SimpleConfigurationManager.java:544) 在sun.reflect.NativeMethodAccessorImpl.invoke0(本机方法)处 sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 在 sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 在java.lang.reflect.Method.invoke(Method.java:606)在 org.apache.geronimo.gbean.runtime.ReflectionMethodInvoker.invoke(ReflectionMethodInvoker.java:34) 在 org.apache.geronimo.gbean.runtime.GBeanOperation.invoke(GBeanOperation.java:124) 在 org.apache.geronimo.gbean.runtime.GBeanInstance.invoke(GBeanInstance.java:867) 在 org.apache.geronimo.kernel.basic.BasicKernel.invoke(BasicKernel.java:239) 在 org.apache.geronimo.kernel.KernelGBean.invoke(KernelGBean.java:342) 在sun.reflect.GeneratedMethodAccessor163.invoke(未知源)在 sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 在java.lang.reflect.Method.invoke(Method.java:606)在 org.apache.geronimo.gbean.runtime.ReflectionMethodInvoker.invoke(ReflectionMethodInvoker.java:34) 在 org.apache.geronimo.gbean.runtime.GBeanOperation.invoke(GBeanOperation.java:124) 在 org.apache.geronimo.gbean.runtime.GBeanInstance.invoke(GBeanInstance.java:867) 在 org.apache.geronimo.kernel.basic.BasicKernel.invoke(BasicKernel.java:239) 在 org.apache.geronimo.system.jmx.MBeanGBeanBridge.invoke(MBeanGBeanBridge.java:172) 在 com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819) 在 com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801) 在 javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1487) 在 javax.management.remote.rmi.RMIConnectionImpl.access $ 300(RMIConnectionImpl.java:97) 在 javax.management.remote.rmi.RMIConnectionImpl $ PrivilegedOperation.run(RMIConnectionImpl.java:1328) 在java.security.AccessController.doPrivileged(本机方法)在 javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1427) 在 javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:848) 在sun.reflect.GeneratedMethodAccessor150.invoke(未知源)在 sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 在java.lang.reflect.Method.invoke(Method.java:606)在 sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:322) 在sun.rmi.transport.Transport $ 1.run(Transport.java:177)在 sun.rmi.transport.Transport $ 1.run(Transport.java:174)在 java.security.AccessController.doPrivileged(本机方法),位于 sun.rmi.transport.Transport.serviceCall(Transport.java:173)在 sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:556) 在 sun.rmi.transport.tcp.TCPTransport $ ConnectionHandler.run0(TCPTransport.java:811) 在 sun.rmi.transport.tcp.TCPTransport $ ConnectionHandler.run(TCPTransport.java:670) 在 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 在 java.util.concurrent.ThreadPoolExecutor $ Worker.run(ThreadPoolExecutor.java:615) 在java.lang.Thread.run(Thread.java:745)造成原因: com.mchange.v2.resourcepool.CannotAcquireResourceException:A ResourcePool无法从其主要工厂获取资源或 资源。在 com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1319) 在 com.mchange.v2.resourcepool.BasicResourcePool.prelimCheckoutResource(BasicResourcePool.java:557) 在 com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:477) 在 com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:525) ...另外82个
,当我调试时,我发现数据库URL为空。 谁能帮我吗?
谢谢。
答案 0 :(得分:0)
如果您想使用c3p0池版本包装现有的JNDI数据源,则可能必须使用Java自己构建该数据源,然后配置Hibernate来寻找该DataSource
的JNDI名称。我不认为hibernate支持通过配置DataSource
将现有ConnectionProvider
包装在c3p0池中。
包装未池化的DataSource的Java方面实际上是easy in c3p0。只需获取对您现有的未合并DataSource
的引用,并使用它代替ds_unpooled
。