我在执行应用程序时收到此警告：
sep 22, 2018 5:59:36 PM org.hibernate.service.jdbc.connections.internal.ConnectionProviderInitiator c3p0ProviderPresent
WARN: HHH000022: c3p0 properties were encountered, but the org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider provider class was not found on the classpath; these properties are going to be ignored.
问题是：我正在使用Hibernate-core-5.2.6.jar（及其所有库），C3p0-0.9.5.2.jar和hibernate-c3p0-5.2.6.Final。
应该可以。 但事实并非如此。 我在做什么错了？