在 CCE 中使用 Spring 配置 Tomcat 7 JDBC 池答案

【问题标题】：Configuring Tomcat 7 JDBC Pool with Spring results in CCE在 CCE 中使用 Spring 配置 Tomcat 7 JDBC 池
【发布时间】：2011-12-12 20:43:30
【问题描述】：

我正在使用 Spring 3.0.5、MSSQLServer 2008（带有 JTDS）Tomcat 7.0.23。我正在尝试摆脱 common 的 DBCP，并在我的 application-config.xml 中尝试了以下操作

<bean id="ipeDS" class="org.apache.tomcat.jdbc.pool.DataSource"
    p:driverClassName="net.sourceforge.jtds.jdbcx.JtdsDataSource"
    p:url="${url}"
    p:username="${username}"
    p:password="${password}"
    p:initialSize="${initial.size}"
    p:maxActive="${max.active}"
    p:jdbcInterceptors="org.apache.tomcat.jdbc.pool.interceptor.ConnectionState;org.apache.tomcat.jdbc.pool.interceptor.StatementFinalizer"/>

这会导致

Caused by: java.lang.ClassCastException: net.sourceforge.jtds.jdbcx.JtdsDataSource cannot be cast to java.sql.Driver

完整的堆栈跟踪：

java.sql.SQLException: net.sourceforge.jtds.jdbcx.JtdsDataSource cannot be cast to java.sql.Driver
at org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver(PooledConnection.java:243)
at org.apache.tomcat.jdbc.pool.PooledConnection.connect(PooledConnection.java:176)
at org.apache.tomcat.jdbc.pool.ConnectionPool.createConnection(ConnectionPool.java:662)
at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:602)
at org.apache.tomcat.jdbc.pool.ConnectionPool.init(ConnectionPool.java:465)
at org.apache.tomcat.jdbc.pool.ConnectionPool.<init>(ConnectionPool.java:130)
at org.apache.tomcat.jdbc.pool.DataSourceProxy.pCreatePool(DataSourceProxy.java:112)
at org.apache.tomcat.jdbc.pool.DataSourceProxy.createPool(DataSourceProxy.java:99)
at org.apache.tomcat.jdbc.pool.DataSourceProxy.getConnection(DataSourceProxy.java:123)
at org.hibernate.ejb.connection.InjectedDataSourceConnectionProvider.getConnection(InjectedDataSourceConnectionProvider.java:71)
at org.hibernate.tool.hbm2ddl.SuppliedConnectionProviderConnectionHelper.prepare(SuppliedConnectionProviderConnectionHelper.java:51)
at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:168)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:375)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1842)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:902)
at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:74)
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:225)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:308)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1477)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1417)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:398)
at org.springframework.beans.factory.BeanFactoryUtils.beansOfTypeIncludingAncestors(BeanFactoryUtils.java:275)
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.detectPersistenceExceptionTranslators(PersistenceExceptionTranslationInterceptor.java:139)
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.<init>(PersistenceExceptionTranslationInterceptor.java:79)
at org.springframework.dao.annotation.PersistenceExceptionTranslationAdvisor.<init>(PersistenceExceptionTranslationAdvisor.java:70)
at org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor.setBeanFactory(PersistenceExceptionTranslationPostProcessor.java:99)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeAwareMethods(AbstractAutowireCapableBeanFactory.java:1439)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1408)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:710)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:410)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:276)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:197)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4765)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5260)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1525)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1515)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)

原因：java.lang.ClassCastException：net.sourceforge.jtds.jdbcx.JtdsDataSource 无法转换为 java.sql.Driver 在 org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver（PooledConnection.java:236） ... 54 更多

任何指针将不胜感激。谢谢。

【问题讨论】：

标签： spring spring-mvc connection-pooling tomcat7

【解决方案1】：

您希望 net.sourceforge.jtds.jdbc.Driver 成为 driver class name。

【讨论】：

【解决方案2】：

在我看来 org.apache.tomcat.jdbc.pool.DataSource 不是兼容的数据源？

在使用 c3p0 之前，我已经使用 JDTS 配置了一个数据源。这是豆子：

      <bean id="dataSource" 
        class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close" 
        p:driverClass=" net.sourceforge.jtds.jdbc.Driver"
        p:jdbcUrl="${jdbc-url}" 
        p:user="${username}" 
        p:password="${password}"
        />

这不是同一个驱动程序类，但正如我所说，我认为您使用的数据源类是问题

这里还有其他各种设置：Data access with JDBC

【讨论】：

【解决方案3】：

p:driverClassName 需要用于底层数据库的 Jdbc Driver。在这种情况下，您需要为 MSSQL Server 指定驱动程序。

【讨论】：