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回答
hibernate tools 不能生成实体类
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错误日志

eclipse.buildId=4.5.2.M20160212-1500
java.version=1.7.0_79
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=zh_CN
Framework arguments:  -product org.eclipse.epp.package.jee.product
Command-line arguments:  -os win32 -ws win32 -arch x86_64 -product org.eclipse.epp.package.jee.product -clean


org.hibernate.eclipse.console
Error
Wed Oct 26 11:40:40 CST 2016
java.lang.NullPointerException: <no message>


java.lang.NullPointerException
at org.hibernate.mapping.ForeignKey.alignColumns(ForeignKey.java:77)
at org.hibernate.mapping.ForeignKey.alignColumns(ForeignKey.java:73)
at org.hibernate.cfg.Configuration.secondPassCompileForeignKeys(Configuration.java:1263)
at org.hibernate.cfg.JDBCMetaDataConfiguration.secondPassCompileForeignKeys(JDBCMetaDataConfiguration.java:33)
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1170)
at org.hibernate.cfg.Configuration.buildMappings(Configuration.java:1115)
at org.hibernate.eclipse.launch.CodeGenerationLaunchDelegate$2.execute(CodeGenerationLaunchDelegate.java:317)
at org.hibernate.console.execution.DefaultExecutionContext.execute(DefaultExecutionContext.java:64)
at org.hibernate.console.ConsoleConfiguration.execute(ConsoleConfiguration.java:93)
at org.hibernate.eclipse.launch.CodeGenerationLaunchDelegate.buildConfiguration(CodeGenerationLaunchDelegate.java:285)
at org.hibernate.eclipse.launch.CodeGenerationLaunchDelegate.runExporters(CodeGenerationLaunchDelegate.java:218)
at org.hibernate.eclipse.launch.CodeGenerationLaunchDelegate.launch(CodeGenerationLaunchDelegate.java:138)
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)


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