【发布时间】：2016-11-21 09:22:51
【问题描述】：
我在使用 hibernate 5 从数据库进行逆向工程时遇到问题。我能够生成 hibernate.reveng.xml 文件，但是当我使用 Hibernate 代码生成配置运行时，它给了我如下所述的错误。
我尝试过添加“休眠”。到我的 xml 文件但同样的事情，我可以生成 hibernate.reveng.xml 但无法运行 Hibernate 代码生成配置。
这是我的 xml 文件：
<hibernate-configuration>
<session-factory>
<property name="connection.driver_class">com.microsoft.sqlserver.jdbc.SQLServerDriver</property>
<property name="connection.password">Password123!</property>
<property name="connection.url">jdbc:sqlserver://localhost:1433;databaseName=TestDB</property>
<property name="connection.username">sa</property>
<property name="dialect">org.hibernate.dialect.SQLServer2012Dialect</property>
</session-factory>
</hibernate-configuration>
这是我面临的错误。
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:257)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:231)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:210)
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:240)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:210)
at org.hibernate.cfg.JDBCMetaDataConfiguration.handleTypes(JDBCMetaDataConfiguration.java:231)
at org.hibernate.cfg.JDBCMetaDataConfiguration.getMetadataCollector(JDBCMetaDataConfiguration.java:90)
at org.hibernate.cfg.JDBCMetaDataConfiguration.getMetadataBuildingContext(JDBCMetaDataConfiguration.java:105)
at org.hibernate.cfg.JDBCMetaDataConfiguration.readFromJDBC(JDBCMetaDataConfiguration.java:123)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.jboss.tools.hibernate.runtime.common.Util.invokeMethod(Util.java:43)
at org.jboss.tools.hibernate.runtime.common.AbstractConfigurationFacade.readFromJDBC(AbstractConfigurationFacade.java:216)
at org.hibernate.eclipse.console.common.ConsoleExtension$2.execute(ConsoleExtension.java:308)
at org.hibernate.console.execution.DefaultExecutionContext.execute(DefaultExecutionContext.java:63)
at org.hibernate.console.ConsoleConfiguration.execute(ConsoleConfiguration.java:108)
at org.hibernate.eclipse.console.common.ConsoleExtension.buildConfiguration(ConsoleExtension.java:266)
at org.hibernate.eclipse.console.common.ConsoleExtension.runExporters(ConsoleExtension.java:174)
at org.hibernate.eclipse.console.common.ConsoleExtension.launchExporters(ConsoleExtension.java:110)
at org.hibernate.eclipse.launch.CodeGenerationLaunchDelegate.launch(CodeGenerationLaunchDelegate.java:266)
at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:885)
at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:739)
at org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:1039)
at org.eclipse.debug.internal.ui.DebugUIPlugin$8.run(DebugUIPlugin.java:1256)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
【问题讨论】：
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希望以下链接能帮助您解决问题！！！ stackoverflow.com/questions/17233399/…
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Hibernate 可以自动确定要使用的正确方言，但为了做到这一点，它需要实时连接到数据库。如果您尝试连接的数据库不存在，您也会看到这个错误。确保数据库凭据正确。
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@Mihir 我删除了方言，但它不起作用。我很确定我的连接是正确的。我可以在刷新表格后从休眠视图中查看
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@shadow 您能否发布一些代码，您是如何加载休眠配置文件、获取数据库连接和执行数据库操作的？
标签： java eclipse hibernate sql-server-2014