使用MyEclipse练习hibernate的一对多映射出现的异常，好像是没有连上数据库，请问如何解决？

Question

2016-4-13 16:26:47 org.hibernate.Version logVersionINFO: HHH000412: Hibernate Core {5.1.0.Final}2016-4-13 16:26:47 org.hibernate.cfg.Environment <clinit>INFO: HHH000206: hibernate.properties not found2016-4-13 16:26:47 org.hibernate.cfg.Environment buildBytecodeProviderINFO: HHH000021: Bytecode provider name : javassist2016-4-13 16:26:47 org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>INFO: HCANN000001: Hibernate Commons Annotations {5.0.1.Final}2016-4-13 16:26:48 org.hibernate.engine.jdbc.connections.internal.ConnectionProviderInitiator initiateServiceWARN: HHH000181: No appropriate connection provider encountered, assuming application will be supplying connections2016-4-13 16:26:48 org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator initiateServiceWARN: HHH000342: Could not obtain connection to query metadata : The application must supply JDBC connectionsException in thread "main" java.lang.ExceptionInInitializerError at com.imooc.entity.Test.add(Test.java:25) at com.imooc.entity.Test.main(Test.java:13)Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment] at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:244) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:208) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:189) at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:51) at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:94) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:217) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:189) at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.handleTypes(MetadataBuildingProcess.java:352) at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:111) at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.build(MetadataBuildingProcess.java:83) at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:418) at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:87) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:692) at util.HibernateUtil.<clinit>(HibernateUtil.java:19) ... 2 moreCaused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:100) at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:54) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:137) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:88) at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:234) ... 15 more1、检查多次hibernate.cfg.xml跟教学视频一致，没错误；2、MySQL数据库正常运行链接；3、在eclipse中可以正常运行，而MyEclipse中总是运行错误；4、代码没问题；else:唯一和老师不同的就是MyEclipse的版本和jar包的版本，可能是版本问题，但不知道如何处理求大神解答，非常感谢！