org.hibernate.AnnotationException: @OneToOne or @ManyToOne on com.demo.pojo.IdCard

TestStudent.testSchemaExport

testSchemaExport(com.demo.pojo.dxwj.TestStudent)

org.hibernate.AnnotationException: @OneToOne or @ManyToOne on com.demo.pojo.dxwj.Students.cardId references an unknown entity: com.demo.pojo.dxwj.IdCard

at org.hibernate.cfg.ToOneFkSecondPass.doSecondPass(ToOneFkSecondPass.java:107)

at org.hibernate.cfg.Configuration.processEndOfQueue(Configuration.java:1580)

at org.hibernate.cfg.Configuration.processFkSecondPassInOrder(Configuration.java:1503)

at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1419)

at org.hibernate.cfg.Configuration.generateDropSchemaScript(Configuration.java:1002)

at org.hibernate.tool.hbm2ddl.SchemaExport.<init>(SchemaExport.java:130)

at org.hibernate.tool.hbm2ddl.SchemaExport.<init>(SchemaExport.java:92)

at com.demo.pojo.dxwj.TestStudent.testSchemaExport(TestStudent.java:28)

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

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at junit.framework.TestCase.runTest(TestCase.java:154)

at junit.framework.TestCase.runBare(TestCase.java:127)

at junit.framework.TestResult$1.protect(TestResult.java:106)

at junit.framework.TestResult.runProtected(TestResult.java:124)

at junit.framework.TestResult.run(TestResult.java:109)

at junit.framework.TestCase.run(TestCase.java:118)

at junit.framework.TestSuite.runTest(TestSuite.java:208)

at junit.framework.TestSuite.run(TestSuite.java:203)

at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83)

at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46)

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)

原因有二：

(1) 被引用的类的class上没添@Entity注解

(2)没有添sessionFactory的annotatedClasses属性列表中去或者是配置文件中没有添加<mapping-class>