Question

当我尝试将Hibernate与本地Derby-Database一起使用时，我总是会对错误的持久性提供程序进行三次警告：

[WARN] HHH015016: Encountered a deprecated javax.persistence.spi.PersistenceProvider [org.hibernate.ejb.HibernatePersistence]; use [org.hibernate.jpa.HibernatePersistenceProvider] instead.
[WARN] HHH015016: Encountered a deprecated javax.persistence.spi.PersistenceProvider [org.hibernate.ejb.HibernatePersistence]; use [org.hibernate.jpa.HibernatePersistenceProvider] instead.
[WARN] HHH015016: Encountered a deprecated javax.persistence.spi.PersistenceProvider [org.hibernate.ejb.HibernatePersistence]; use [org.hibernate.jpa.HibernatePersistenceProvider] instead.

我找不到任何理由，因为我的persistence.xml（项目中唯一的persistence.xml）如下所示：

<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="performanzdb" transaction-type="RESOURCE_LOCAL">
        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
        <class>...</class>
        <properties>
            <property name="hibernate.connection.url" value="myUrl;create=true" />
            <property name="hibernate.connection.driver_class" value="org.apache.derby.jdbc.EmbeddedDriver" />
            <property name="hibernate.dialect" value="org.hibernate.dialect.DerbyDialect" />
            <property name="hibernate.hbm2ddl.auto" value="update" />
        </properties>
    </persistence-unit>
</persistence>

因此定义了正确的持久性提供程序org.hibernate.jpa.HibernatePersistenceProvider。

我可以想象的另一个原因是我的一些maven依赖项是错误的，但这些只是最新的entitymanager - 和jpamodelgen-dependencies：

    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-entitymanager</artifactId>
        <version>4.3.7.Final</version>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-jpamodelgen</artifactId>
        <version>4.3.7.Final</version>
    </dependency>

除了开头的警告和错误：

[ERROR] HHH015011: Unable to locate static metamodel field : package.class_#field

不时发生新定义的字段，Hibernate运行正常，所有内容都写在数据库中。

有谁知道，为什么使用了错误的PersistenceProvider或为什么会出现这种错误？

Answer 1

已报道类似问题here，请查看。

来自以上链接，

This bug also affects version 4.3.7.Final.

Answer 2

使用新的基于maven的Spring Boot项目，包括JPA依赖项，当slf4j级别为INFO时，我仍然会看到这些警告日志行。

14:04:47.990 [main] WARN  o.hibernate.ejb.HibernatePersistence - HHH015016: Encountered a deprecated javax.persistence.spi.PersistenceProvider [org.hibernate.ejb.HibernatePersistence]; use [org.hibernate.jpa.HibernatePersistenceProvider] instead.
14:04:47.990 [main] WARN  o.hibernate.ejb.HibernatePersistence - HHH015016: Encountered a deprecated javax.persistence.spi.PersistenceProvider [org.hibernate.ejb.HibernatePersistence]; use [org.hibernate.jpa.HibernatePersistenceProvider] instead.
14:04:47.990 [main] WARN  o.hibernate.ejb.HibernatePersistence - HHH015016: Encountered a deprecated javax.persistence.spi.PersistenceProvider [org.hibernate.ejb.HibernatePersistence]; use [org.hibernate.jpa.HibernatePersistenceProvider] instead.

我找到了这个解决方案https://hibernate.atlassian.net/browse/HHH-9141并在创建实体管理器工厂之前添加了一段代码：

public EntityManager create() {
    if (AbstractBaseForJUnit.EMF == null) {
        PersistenceProviderResolverHolder.setPersistenceProviderResolver(new PersistenceProviderResolver() {
            private final List<PersistenceProvider> providers_ = Arrays.asList((PersistenceProvider) new HibernatePersistenceProvider());

            @Override
            public void clearCachedProviders() {
                // TODO Auto-generated method stub
            }

            @Override
            public List<PersistenceProvider> getPersistenceProviders() { 
                return providers_; 
            }
        });

        if (StringUtils.isBlank(AbstractBaseForJUnit.PU_NAME)) {
            AbstractBaseForJUnit.PU_NAME = CoreProperties.Features.PERSISTENCE_UNIT_NAME;
        }
        AbstractBaseForJUnit.EMF = Persistence.createEntityManagerFactory(AbstractBaseForJUnit.PU_NAME);
    }

    if (this.EM == null) {
        this.EM = AbstractBaseForJUnit.EMF.createEntityManager();
        this.EM.setFlushMode(FlushModeType.COMMIT);
    }

    return EM;
}

还改变了我的persistence.xml

＆LT;提供商GT; org.hibernate.jpa.HibernatePersistenceProvider＆LT; /提供商GT;

现在没有警告了。

即使给出了正确的提供程序，也会发生关于PersistenceProvider的Hibernate警告

2 个答案: