Hibernate连接池问题java.lang.NoClassDefFoundError: com/mchange/v2/c3p0/DataSources

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Hibernate连接池问题java.lang.NoClassDefFoundError: com/mchange/v2/c3p0/

09:50错误信息如下： Exception in thread "main" java.lang.NoClassDefFoundError: com/mchange/v2/c3p0/DataSources at org.hibernate.connection.C3P0ConnectionProvider.configure(C3P0ConnectionProvider.java:154) at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:124) at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:56) at org.hibernate.cfg.SettingsFactory.createConnectionProvider(SettingsFactory.java:414) at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:62) at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2009) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1292) at com.orm.MySessionFactory.currentSession(MySessionFactory.java:20) at com.hs.biz.Start.getUserAll(Start.java:16) at com.hs.biz.Start.main(Start.java:37) Caused by: java.lang.ClassNotFoundException: com.mchange.v2.c3p0.DataSources at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319) ... 10 more

仔细查找后发现没有导入连接池包（c3p0-0.8.5.2.jar）。