java - hibernate不将实体类确定为字段变量

Question

我正在尝试为带注释的类创建运行时配置，因为我正在使用其他项目作为库(仅包含 HibernateUtil 和 hibernate.cfg.xml)。现在的问题是，当我在此配置中仅传递一个类时，一切正常，但是当我引入多个类时，测试失败，如下堆栈跟踪:

FAILED CONFIGURATION: @BeforeSuite setUp
org.hibernate.MappingException: Could not determine type for: com.model.Person, at table: ranking, for columns: [org.hibernate.mapping.Column(ranking_observer)]
    at org.hibernate.mapping.SimpleValue.getType(SimpleValue.java:455)
    at org.hibernate.mapping.SimpleValue.isValid(SimpleValue.java:422)
    at org.hibernate.mapping.Property.isValid(Property.java:226)
    at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:597)
    at org.hibernate.mapping.RootClass.validate(RootClass.java:265)
    at org.hibernate.boot.internal.MetadataImpl.validate(MetadataImpl.java:329)
    at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:444)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:710)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:726)
    at com.utlity.HibernateUtil.configurationSetup(HibernateUtil.java:15)
    at com.model.RankingTest.setUp(RankingTest.java:16)
    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.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:100)
    at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:515)
    at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:216)
    at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:143)
    at org.testng.SuiteRunner.privateRun(SuiteRunner.java:305)
    at org.testng.SuiteRunner.run(SuiteRunner.java:268)
    at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
    at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
    at org.testng.TestNG.runSuitesSequentially(TestNG.java:1264)
    at org.testng.TestNG.runSuitesLocally(TestNG.java:1189)
    at org.testng.TestNG.runSuites(TestNG.java:1104)
    at org.testng.TestNG.run(TestNG.java:1076)
    at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:132)
    at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:236)
    at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:81)

以下是我的主课

@Entity
@Table(name = "ranking")
public class Ranking {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "ranking_id")
    protected Long id;

    @Column(name = "ranking_subject")
    protected Person subject;

    @Column(name = "ranking_observer")
    protected Person observer;

    @Column(name = "ranking_skill")
    protected Skill skill;

    @Column(name = "ranking_numbers")
    protected Integer ranking;

测试用例

public class RankingTest {

protected SessionFactory factory;

@BeforeSuite
public void setUp() {
    factory = HibernateUtil.configurationSetup(Ranking.class, Person.class, Skill.class);
}

@Test
public void testSetup() {
    Assert.assertNotNull(factory);
}
}

和 hibernateUtil

public static SessionFactory configurationSetup(Class<?>... classes) {
        Configuration configuration = new Configuration();

        for (Class<?> clazz : classes) {
            configuration.addAnnotatedClass(clazz);
        }
        configuration.configure("hibernate.cfg.xml");
        return configuration.buildSessionFactory();
    }

感谢任何帮助，如果需要更多信息，请告诉我。

谢谢

Answer 1

您想要在两种类型的对象之间创建关系:Ranking 和 Person。 @Column 注释通常不用于这些情况，据我所知，使用它会创建一个将 Person 实例序列化到其中的 blob 列。

您需要使用 @ManyToOne 注释(它是 Person 类中的 @OneToMany 的逆向注释。有关更多信息实体关系可以在 the Hibernate documentation 中找到。