当我将Hibernate版本从3.6.8更新到4.0.0时，我在下面这行代码中收到了一个有关废弃方法buildSessionFactory()的警告：
private static final SessionFactory sessionFactory =
new Configuration().configure().buildSessionFactory();
根据Javadoc的建议，推荐使用另一种方法:buildSessionFactory(ServiceRegistry serviceRegistry)
但在文档中，我发现有一个已弃用的变体。
是的，它已被弃用。请使用以下内容替换您的SessionFactory：
在Hibernate 4.0、4.1、4.2中
private static SessionFactory sessionFactory;
private static ServiceRegistry serviceRegistry;
public static SessionFactory createSessionFactory() {
Configuration configuration = new Configuration();
configuration.configure();
ServiceRegistry serviceRegistry = new ServiceRegistryBuilder().applySettings(
configuration.getProperties()). buildServiceRegistry();
sessionFactory = configuration.buildSessionFactory(serviceRegistry);
return sessionFactory;
}
更新:
在Hibernate 4.3中，ServiceRegistryBuilder已被废弃。请改用以下方式。
serviceRegistry = new StandardServiceRegistryBuilder().applySettings(
configuration.getProperties()).build();
是的，这个方法已被弃用。 http://docs.jboss.org/hibernate/core/4.0/javadocs/org/hibernate/cfg/Configuration.html#buildSessionFactory() 明确告诉你要使用你找到的另一个方法 (buildSessionFactory(ServiceRegistry serviceRegistry)) - 所以请使用它。
文档是从一个版本复制到另一个版本的，并且很可能尚未更新（他们不会每个版本都重写手册），所以请相信 Javadocs。
有关此更改的详细信息，请参见：
一些其他参考资料：
public class Hbutil {
private static SessionFactory sessionFactory;
private static ServiceRegistry serviceRegistry;
private static SessionFactory configureSessionFactory() throws HibernateException {
Configuration configuration = new Configuration();
configuration.configure();
serviceRegistry = new ServiceRegistryBuilder().applySettings(configuration.getProperties()).buildServiceRegistry();
sessionFactory = configuration.buildSessionFactory(serviceRegistry);
return sessionFactory;
}
public static SessionFactory getSessionFactory() {
return configureSessionFactory();
}
}
代码已在Hibernate 4.3.0中验证过可以工作。请注意，您可以删除XML文件名参数，或者提供自己的路径。这与其他帖子类似(但更正了拼写错误)，但是此代码正确。
import org.hibernate.SessionFactory;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
Configuration configuration = new Configuration();
configuration.configure("/com/rtw/test/hiber/hibernate.cfg.xml");
ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().applySettings(configuration.getProperties()).build();
sessionFactory = configuration.buildSessionFactory(serviceRegistry);
buildSessionFactory(ServiceRegistry serviceRegistry)。请点击此处。在不同版本的文档中发现差异并不罕见。大多数开发人员认为文档编写是一件繁琐的事情，他们往往会拖延。
通常来说，如果javadoc说了一件事情，而其他非javadoc文档与之相反，那么javadoc更准确的可能性更大。程序员更有可能随着代码变化而更新javadoc，因为javadoc的“源”与代码在同一个文件中。
在@deprecated标记的情况下，可以肯定的是，javadoc更准确。开发人员经过仔细考虑后才会弃用某些东西......（一般情况下）他们不会取消弃用。
System.getenv(String)，否则它们不会取消弃用。http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4199068 - bestsssConfiguration.buildSessionFactory（） ;) - v.ladynevConfiguration configuration = new Configuration().configure();
StandardServiceRegistryBuilder builder = new StandardServiceRegistryBuilder().
applySettings(configuration.getProperties());
SessionFactory factory = configuration.buildSessionFactory(builder.build());
private static StandardServiceRegistry registry;
private static SessionFactory sessionFactory;
public static SessionFactory getSessionFactory() {
if (sessionFactory == null) {
try {
// Creating a registry
registry = new StandardServiceRegistryBuilder().configure("hibernate.cfg.xml").build();
// Create the MetadataSources
MetadataSources sources = new MetadataSources(registry);
// Create the Metadata
Metadata metadata = sources.getMetadataBuilder().build();
// Create SessionFactory
sessionFactory = metadata.getSessionFactoryBuilder().build();
} catch (Exception e) {
e.printStackTrace();
if (registry != null) {
StandardServiceRegistryBuilder.destroy(registry);
}
}
}
return sessionFactory;
}
//To shut down
public static void shutdown() {
if (registry != null) {
StandardServiceRegistryBuilder.destroy(registry);
}
}
是的，有更好的方法来引导Hibernate，比如以下方法。
传统的Configuration对象比使用自Hibernate 4版本以来引入的BootstrapServiceRegistryBuilder对象功能较弱：
final BootstrapServiceRegistryBuilder bsrb = new BootstrapServiceRegistryBuilder()
.enableAutoClose();
Integrator integrator = integrator();
if (integrator != null) {
bsrb.applyIntegrator( integrator );
}
final BootstrapServiceRegistry bsr = bsrb.build();
final StandardServiceRegistry serviceRegistry =
new StandardServiceRegistryBuilder(bsr)
.applySettings(properties())
.build();
final MetadataSources metadataSources = new MetadataSources(serviceRegistry);
for (Class annotatedClass : entities()) {
metadataSources.addAnnotatedClass(annotatedClass);
}
String[] packages = packages();
if (packages != null) {
for (String annotatedPackage : packages) {
metadataSources.addPackage(annotatedPackage);
}
}
String[] resources = resources();
if (resources != null) {
for (String resource : resources) {
metadataSources.addResource(resource);
}
}
final MetadataBuilder metadataBuilder = metadataSources.getMetadataBuilder()
.enableNewIdentifierGeneratorSupport(true)
.applyImplicitNamingStrategy(ImplicitNamingStrategyLegacyJpaImpl.INSTANCE);
final List<Type> additionalTypes = additionalTypes();
if (additionalTypes != null) {
additionalTypes.stream().forEach(type -> {
metadataBuilder.applyTypes((typeContributions, sr) -> {
if(type instanceof BasicType) {
typeContributions.contributeType((BasicType) type);
} else if (type instanceof UserType ){
typeContributions.contributeType((UserType) type);
} else if (type instanceof CompositeUserType) {
typeContributions.contributeType((CompositeUserType) type);
}
});
});
}
additionalMetadata(metadataBuilder);
MetadataImplementor metadata = (MetadataImplementor) metadataBuilder.build();
final SessionFactoryBuilder sfb = metadata.getSessionFactoryBuilder();
Interceptor interceptor = interceptor();
if(interceptor != null) {
sfb.applyInterceptor(interceptor);
}
SessionFactory sessionFactory = sfb.build();
您还可以使用JPA引导Hibernate：
PersistenceUnitInfo persistenceUnitInfo = persistenceUnitInfo(getClass().getSimpleName());
Map configuration = properties();
Interceptor interceptor = interceptor();
if (interceptor != null) {
configuration.put(AvailableSettings.INTERCEPTOR, interceptor);
}
Integrator integrator = integrator();
if (integrator != null) {
configuration.put(
"hibernate.integrator_provider",
(IntegratorProvider) () -> Collections.singletonList(integrator));
}
EntityManagerFactoryBuilderImpl entityManagerFactoryBuilder =
new EntityManagerFactoryBuilderImpl(
new PersistenceUnitInfoDescriptor(persistenceUnitInfo),
configuration
);
EntityManagerFactory entityManagerFactory = entityManagerFactoryBuilder.build();
EntityManagerFactory而不是SessionFactory。但是，SessionFactory扩展了EntityManagerFactory，因此实际构建的对象也是SessionFactoryImpl。
这两种引导方法影响Hibernate的行为。使用本机引导时，Hibernate以JPA之前的传统模式运行。
使用JPA引导时，Hibernate将按照JPA规范运行。
这两种模式之间有几个差异：
EntityNotFoundException，因此需要进行数据库检查。JpaCompliance类。public class HibernateSessionFactory {
private static final SessionFactory sessionFactory = buildSessionFactory1();
private static SessionFactory buildSessionFactory1() {
Configuration configuration = new Configuration().configure(); // configuration
// settings
// from
// hibernate.cfg.xml
StandardServiceRegistryBuilder serviceRegistryBuilder = new StandardServiceRegistryBuilder();
serviceRegistryBuilder.applySettings(configuration.getProperties());
ServiceRegistry serviceRegistry = serviceRegistryBuilder.build();
return configuration.buildSessionFactory(serviceRegistry);
}
public static SessionFactory getSessionFactory() {
return sessionFactory;
}
public static void shutdown() {
// Close caches and connection pools
getSessionFactory().close();
}
StandardServiceRegistryBuilder 没有被弃用。 - JPG