java - Hibernate - OGM [PersistenceUnit: person] 无法建立 Hibernate SessionFactory

Question

我收到以下错误

线程“主”javax.persistence.PersistenceException 中的异常：[PersistenceUnit: person] 无法在 org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.persistenceException(EntityManagerFactoryBuilderImpl.java:1249) 在 org.hibernate.jpa 构建 Hibernate SessionFactory。 boot.internal.EntityManagerFactoryBuilderImpl.access$600(EntityManagerFactoryBuilderImpl.java:120) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:860) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4 org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl 的 org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.withTccl(ClassLoaderServiceImpl.java:425) 的 .perform(EntityManagerFactoryBuilderImpl.java:850)。build(EntityManagerFactoryBuilderImpl.java:849) at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:75) at org.hibernate.ogm.jpa.HibernateOgmPersistence.createEntityManagerFactory(HibernateOgmPersistence.java:63) at javax.persistence.Persistence .createEntityManagerFactory(Persistence.java:55) 在 com.ihappyk.utility.Utility.setUpEntityManagerFactory(Utility.java:11) 在 com.ihappyk.work.PersonWorker 的 javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:39)。 main(PersonWorker.java:14) 原因：org.hibernate.MappingException: 无法在 org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.createIdentifierGenerator(默认标识符生成器工厂。java:123) 在 org.hibernate.mapping.SimpleValue.createIdentifierGenerator(SimpleValue.java:225) 在 org.hibernate.internal.SessionFactoryImpl.(SessionFactoryImpl.java:323) 在 org.hibernate.cfg.Configuration.buildSessionFactory(Configuration. java:1859) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:857) ... 9 更多原因：org.hibernate.HibernateException：意外返回类型 [java.lang.Long]在 org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.createIdentifierGenerator(DefaultIdentifierGeneratorFactory.java:117) 的 org.hibernate.id.UUIDGenerator.configure(UUIDGenerator.java:111) 进行 UUID 转换 ... 13 更多225) 在 org.hibernate.internal.SessionFactoryImpl.(SessionFactoryImpl.java:323) 在 org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1859) 在 org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform (EntityManagerFactoryBuilderImpl.java:857) ... 9 更多原因：org.hibernate.HibernateException：在 org.hibernate.id.UUIDGenerator.configure(UUIDGenerator.java:111 进行 UUID 转换的意外返回类型 [java.lang.Long] ) 在 org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.createIdentifierGenerator(DefaultIdentifierGeneratorFactory.java:117) ... 13 更多225) 在 org.hibernate.internal.SessionFactoryImpl.(SessionFactoryImpl.java:323) 在 org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1859) 在 org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform (EntityManagerFactoryBuilderImpl.java:857) ... 9 更多原因：org.hibernate.HibernateException：在 org.hibernate.id.UUIDGenerator.configure(UUIDGenerator.java:111 进行 UUID 转换的意外返回类型 [java.lang.Long] ) 在 org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.createIdentifierGenerator(DefaultIdentifierGeneratorFactory.java:117) ... 13 更多internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:857) ... 9 更多原因：org.hibernate.HibernateException：在 org.hibernate.id.UUIDGenerator.configure 进行 UUID 转换的意外返回类型 [java.lang.Long] (UUIDGenerator.java:111) 在 org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.createIdentifierGenerator(DefaultIdentifierGeneratorFactory.java:117) ... 13 更多internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:857) ... 9 更多原因：org.hibernate.HibernateException：在 org.hibernate.id.UUIDGenerator.configure 进行 UUID 转换的意外返回类型 [java.lang.Long] (UUIDGenerator.java:111) 在 org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.createIdentifierGenerator(DefaultIdentifierGeneratorFactory.java:117) ... 13 更多createIdentifierGenerator(DefaultIdentifierGeneratorFactory.java:117) ... 13 更多createIdentifierGenerator(DefaultIdentifierGeneratorFactory.java:117) ... 13 更多

实用程序.java

public class Utility {
    private static EntityManagerFactory entityManagerFactory;

    //@BeforeClass
    public static EntityManagerFactory setUpEntityManagerFactory() {
        entityManagerFactory = Persistence.createEntityManagerFactory( "person" );
        return entityManagerFactory;
    }

    //@AfterClass
    public static void closeEntityManagerFactory() {
        entityManagerFactory.close();
    }
}

持久类

@Entity
public class Person {

        @Id
        @GeneratedValue(generator = "uuid")
        @GenericGenerator(name = "uuid", strategy = "uuid2")
        private long id;

        private String firstName;
        private String lastName;

        public long getId() {
            return id;
        }
        public void setId(long id) {
            this.id = id;
        }
        public String getFirstName() {
            return firstName;
        }
        public void setFirstName(String firstName) {
            this.firstName = firstName;
        }
        public String getLastName() {
            return lastName;
        }
        public void setLastName(String lastName) {
            this.lastName = lastName;
        }

        public Person(){

        }

        public Person(String firstName, String lastName) {
            this.firstName = firstName;
            this.lastName = lastName;
        }    
}

主班

public class PersonWorker {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        EntityManagerFactory emf = Utility.setUpEntityManagerFactory();

        EntityManager em = emf.createEntityManager();

        em.getTransaction().begin();

            // create a Person
        Person bob = new Person( "Bob", "McRobb" );

        em.persist( bob );
        em.getTransaction().commit();
        em.close();
        emf.close();

    }

}

持久性.xml

<?xml version="1.0"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
             version="2.0">

    <persistence-unit name="person" transaction-type="JTA">
        <provider>org.hibernate.ogm.jpa.HibernateOgmPersistence</provider>
       <class>com.ihappyk.model.Person</class>
        <properties>
            <property name="hibernate.ogm.datastore.provider" value="mongodb" />
            <property name="hibernate.ogm.datastore.database" value="hibernateOGM" />
            <property name="hibernate.ogm.datastore.host" value="127.0.0.1" />
            <property name="hibernate.ogm.datastore.port" value="27017" />
            <property name="hibernate.ogm.datastore.provider" value="org.hibernate.ogm.datastore.mongodb.impl.MongoDBDatastoreProvider"/>

            <property name="hibernate.transaction.jta.platform" value="org.hibernate.service.jta.platform.internal.JBossStandAloneJtaPlatform"/>
        </properties>
    </persistence-unit>
</persistence>

score 8 · Accepted Answer

根异常说明了一切：

Caused by: org.hibernate.HibernateException: Unanticipated return type [java.lang.Long] for UUID

您在不支持的类型上使用 UUID id 生成器。在这种情况下，您应该使用String而不是。Long

score 1 · Accepted Answer

如果您使用此已弃用的 org.hibernate.ejb.HibernatePersistence 设置新的提供程序，如下所示

<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>

如果你的价值是

<property name="hibernate.hbm2ddl.auto" value="update" />

设置“创建删除”

<property name="hibernate.hbm2ddl.auto" value="create-drop" />

XML 路径：resources/META-INF/persistence.xml
对于 mysql

<?xml version="1.0" encoding="UTF-8"?>

<persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                 xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">

        <persistence-unit name="persistenceUnit" transaction-type="RESOURCE_LOCAL">
            <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
            <properties>
                  <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
                  <property name="hibernate.hbm2ddl.auto" value="create-drop" />
                  <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>
                  <property name="hibernate.show_sql" value="true"/>
                  <property name="hibernate.connection.username" value="yourname"/>
                  <property name="hibernate.connection.password" value="yourpassword"/>
                  <property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/yourschema"/>
                  <property name="hibernate.max_fetch_depth" value="3"/>
            </properties>
        </persistence-unit>

    </persistence>

score 0 · Accepted Answer

首先，您应该分享有关异常和 persistence.xml 内容的完整堆栈跟踪。那么在我看来，基于我所看到的问题可能是你没有在你的persistence.xml 中声明一个持久性提供程序。事实上，如果你在非容器管理的环境中开发，你需要声明一个持久化提供者。

<persistence xmlns="http://java.sun.com/xml/ns/persistence"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
         version="2.0">
    <persistence-unit name="myunit" >
    <provider>org.hibernate.ejb.HibernatePersistence</provider>
    //Others properties
</persistence-unit>

score -1 · Accepted Answer

我不知道问题是否仍然存在，但我认为您必须将 persistence.xml 文件放入 src/main/META-INF 文件夹中。我看到你把它放到 src/META-INF 中。也许这就是问题所在？当然，您要链接的实体也属于 src/main 文件夹:)

java - Hibernate - OGM [PersistenceUnit: person] 无法建立 Hibernate SessionFactory

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