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配置了方言为什么,会有这个问题

八月 02, 2019 12:00:26 下午 org.hibernate.annotations.common.Version <clinit>

INFO: HCANN000001: Hibernate Commons Annotations {4.0.2.Final}

八月 02, 2019 12:00:26 下午 org.hibernate.Version logVersion

INFO: HHH000412: Hibernate Core {4.2.4.Final}

八月 02, 2019 12:00:26 下午 org.hibernate.cfg.Environment <clinit>

INFO: HHH000206: hibernate.properties not found

八月 02, 2019 12:00:26 下午 org.hibernate.cfg.Environment buildBytecodeProvider

INFO: HHH000021: Bytecode provider name : javassist

八月 02, 2019 12:00:26 下午 org.hibernate.service.jdbc.connections.internal.ConnectionProviderInitiator initiateService

WARN: HHH000181: No appropriate connection provider encountered, assuming application will be supplying connections

org.hibernate.HibernateException: Connection cannot be null when 'hibernate.dialect' not set

at org.hibernate.service.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:97)

at org.hibernate.service.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:67)

at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:174)

at org.hibernate.service.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:75)

at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:159)

at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:131)

at org.hibernate.cfg.Configuration.buildTypeRegistrations(Configuration.java:1818)

at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1776)

at db.MyhibernateSessionFactory.getsessionFactory(MyhibernateSessionFactory.java:24)

at service.impl.UsersDaoImpl.usersLogin(UsersDaoImpl.java:27)

at service.impl.TestUsersDaoImpl.testUsersLogin(TestUsersDaoImpl.java:17)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)

at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)

at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)

at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)

at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)

at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)

at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)

at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)

at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)

at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)

at org.junit.runners.ParentRunner.run(ParentRunner.java:300)

at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)

at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)


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1 回答

能否把代码截取出来,?Connection cannot be null when 'hibernate.dialect' not set,从报错信息来看,是没有设置,,为了验证,设置是否有效,可以尝试按住Crtl键,在点击,你设置的方言,看看能否进去,,https://img1.sycdn.imooc.com//5d5ff5a000015a4214240112.jpg

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配置了方言为什么,会有这个问题

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