启动Tomcat 8服务器时出现以下错误。我正在使用ojdbc14.jar，也尝试过使用ojdbc6.jar，但它不起作用。这仅在Tomcat
8中发生。如果使用Tomcat 7，则不会引发任何异常。JRE版本是7

引起原因：java.lang.AbstractMethodError：org.apache.tomcat.dbcp.dbcp2.DelegatingConnection.isValid（DelegatingConnection.java:917）处的oracle.jdbc.driver.T4CConnection.isValid（I）Z在org.apache.tomcat处。
org.apache.tomcat.dbcp.dbcp2.PoolableConnectionFactory.validateConnection（PoolableConnectionFactory.java:356）的dbcp.dbcp2.PoolableConnection.validate（PoolableConnection.java:282）org.apache.tomcat.dbcp.dbcp2.BasicDataSource.validateConnectionFactory（
org.apache.tomcat.dbcp.dbcp2.BasicDataSource.createPoolableConnectionFactory（BasicDataSource.java:2289）处的org.apache.tomcat.dbcp.dbcp2.BasicDataSource.createDataSource（BasicDataSource.java:2038）处的BasicDataSource.java:2306）
org.hibernate.ejb.connection处的.apache.tomcat.dbcp.dbcp2.BasicDataSource.getConnection（BasicDataSource.java:1532）。org.hibernate.engine.jdbc.internal.JdbcServicesImpl
$
ConnectionProviderJdbcConnectionAccess.obtainConnection（JdbcServicesImpl.java:242）处的InjectedDataSourceConnectionProvider.getConnection（InjectedDataSourceConnectionProvider.java:70）在org.hibernate.engine.jdbc.internal.JdbcServicesImpl。
org.hibernate.service.internal.StandardServiceRegistryImpl.configureService（StandardServiceRegistryImpl.java:75）处的org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService（AbstractServiceRegistryImpl.java:159）处的org.hibernate.service.internal
org.hibernate.cfg.SettingsFactory.buildSettings（SettingsFactory.java:78）处的org.hibernate.cfg.Configuration中的.AbstractServiceRegistryImpl.getService（AbstractServiceRegistryImpl.java:131）。org.hibernate.cfg.Configuration.buildSettings（Configuration.java:2279）的org.hibernate.cfg.Configuration.buildSessionFactory（Configuration.java:1748）的org.hibernate.ejb.EntityManagerFactoryImpl的buildSettingsInternal（Configuration.java:2283）
.org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory（Ejb3Configuration.java:920）处的EntityManagerFactoryImpl.java:94）org.hibernate.ejb.HibernatePersistence处的org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory（Ejb3Configuration.java:904）处的。
org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory（LocalContainerEntityManagerFactoryBean.java:290）处的.createContainerEntityManagerFactory（HibernatePersistence.java:92），位于org.springframework.orm.jpa.AbstractEntityManagerFactoryBean。在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods（AbstractAutowireCapableBeanFactory.java:1571）的afterPropertiesSet（AbstractEntityManagerFactoryBean.java:310）在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean（AbstractAutowireCapableBean。
…另外21个