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小编典典

寻找一个不被淘汰的session-factory

java

我正在处理休眠问题，当我打开当前项目时，我发现我的Session-Factory已过时：

AnnotationConfiguration af = new AnnotationConfiguration();
SessionFactory factory = af.configure().buildSessionFactory();
Session session = factory.openSession();

AnnotationConfiguration现在似乎已被弃用…所以我检查了JavaDoc，并得知它已移至：

org.hibernate.cfg.Configuration

到目前为止，我的代码运行良好，实际上我不想更改它。但是我在Google上搜索，发现有人问自己同样的问题，为什么需要更改SessionFactory …
http://rgordon.co.uk/博客/ 2012/02/24 / hibernate-please-dont-deprecate-
yourself /

该文章来自2012年（不是那么古老…），并以这种方式描述了所有内容：

ServiceRegistryBuilder serviceRegistryBuilder = new ServiceRegistryBuilder();
serviceRegistryBuilder.applySettings(properties);
ServiceRegistry serviceRegistry = serviceRegistryBuilder.buildServiceRegistry();

Configuration configuration = new Configuration().addClass(FeedTradePersistable.class);

SessionFactory sessionFactory = configuration.buildSessionFactory(serviceRegistry);

我实现了。JavaDoc证明这是错误的-再次！不推荐使用。它指的是：

org.hibernate.boot.registry.StandardServiceRegistryBuilder

我再次用谷歌搜索。结果并不令人满意…

我开始修改代码…

ServiceRegistry serviceRegistry = serviceRegistryBuilder.build();
Configuration configuration = new Configuration();
SessionFactory sessionFactory = configuration.buildSessionFactory(serviceRegistry);
Session session = sessionFactory.openSession();

并引发异常…

org.hibernate.HibernateException：当未设置“ hibernate.dialect”时，连接不能为空

在行：

SessionFactory sessionFactory = configuration.buildSessionFactory(serviceRegistry);

我很确定这是因为我没有指定任何配置设置。其实，我不想。我对hibernate.cfg.xml感到满意。

我玩了一下configuration.addFile（..-不太成功…

有人对此有想法吗？谢谢

更新：（hibernate.cfg.xml）

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
  <session-factory>
    <property name="hibernate.connection.driver_class">com.microsoft.sqlserver.jdbc.SQLServerDriver</property>
    <property name="hibernate.connection.url">jdbc:sqlserver://localhost\SQLEXPRESS</property>
    <property name="hibernate.connection.username">qohelet</property>
    <property name="hibernate.connection.password">password</property>
    <property name="current_session_context_class">thread</property>
    <property name="hibernate.temp.use_jdbc_metadata_defaults">false</property>
    <property name="hibernate.dialect">org.hibernate.dialect.SQLServerDialect</property>
    <property name="bonecp.setIdleMaxAgeInMinutes">240</property>
    <property name="bonecp.setIdleConnectionTestPeriodInMinutes">5</property>
    <property name="bonecp.partitionCount">3</property>
    <property name="bonecp.acquireIncrement">10</property>
    <property name="bonecp.maxConnectionsPerPartition">60</property>
    <property name="bonecp.minConnectionsPerPartition">20</property>
    <property name="bonecp.statementsCacheSize">50</property>
    <property name="bonecp.releaseHelperThreads">3</property>
        <mapping class="order.Line" />
        <mapping class="order.Order" />
        <mapping class="order.Group" />
  </session-factory>
</hibernate-configuration>

更新（2014年2月16日）： 我认为也有必要向您展示我的pom.xml。我花了一段时间才弄清楚Hibernate-
Framework的哪种组合适合我…

<dependency>
    <groupId>org.hibernate.common</groupId>
    <artifactId>hibernate-commons-annotations</artifactId>
    <version>4.0.2.Final</version>
</dependency>
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-core</artifactId>
    <version>3.6.10.Final</version>
    <exclusions>
        <exclusion>
            <artifactId>hibernate-commons-annotations</artifactId>
            <groupId>org.hibernate.common</groupId>
        </exclusion>
        <exclusion>
            <artifactId>hibernate-jpa-2.1-api</artifactId>
            <groupId>org.hibernate.javax.persistence</groupId>
        </exclusion>
        <exclusion>
            <artifactId>hibernate-commons-annotations</artifactId>
            <groupId>org.hibernate</groupId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-entitymanager</artifactId>
    <version>4.1.8.Final</version>
    <exclusions>
        <exclusion>
            <artifactId>hibernate</artifactId>
            <groupId>org.hibernate</groupId>
        </exclusion>
        <exclusion>
            <artifactId>hibernate-annotations</artifactId>
            <groupId>org.hibernate</groupId>
        </exclusion>
        <exclusion>
            <artifactId>hibernate-commons-annotations</artifactId>
            <groupId>org.hibernate</groupId>
        </exclusion>
        <exclusion>
            <artifactId>hibernate-jpa-2.1-api</artifactId>
            <groupId>org.hibernate.javax.persistence</groupId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-commons-annotations</artifactId>
    <version>3.2.0.Final</version>
</dependency>
<dependency>
    <groupId>org.hibernate.javax.persistence</groupId>
    <artifactId>hibernate-jpa-2.0-api</artifactId>
    <version>1.0.1.Final</version>
</dependency>
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-jpamodelgen</artifactId>
    <version>1.1.1.Final</version>
    <scope>provided</scope>
</dependency>

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2020-09-26

共1个答案

小编典典

当我有一些时间使软件现代化时，我决定做出一些努力并进行了一些研究：

http://www.codejava.net/frameworks/hibernate/building-hibernate-
sessionfactory-from-service-
registry 提供了一种现代化的方法HibernateUtil：

import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.service.ServiceRegistryBuilder;

public class HibernateUtil {

private static SessionFactory sessionFactory;

public static SessionFactory getSessionFactory() {
    if (sessionFactory == null) {
        Configuration configuration = new Configuration().configure();
        ServiceRegistryBuilder registry = new ServiceRegistryBuilder();
        registry.applySettings(configuration.getProperties());
        ServiceRegistry serviceRegistry = registry.buildServiceRegistry();

        sessionFactory = configuration.buildSessionFactory(serviceRegistry);            
    }

    return sessionFactory;
}

}

即使此版本似乎也可以工作：

import java.util.logging.Level;
import java.util.logging.Logger;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

public class HibernateUtil {

private static final SessionFactory sessionFactory;

static {
    try {
        Configuration cfg = new Configuration();
        sessionFactory = cfg.configure("hibernate.cfg.xml").buildSessionFactory();
    } catch (Throwable ex) {
        Logger.getLogger(HibernateUtil.class.getName()).log(Level.SEVERE, null, ex);
        throw new ExceptionInInitializerError(ex);
    }
}

public static SessionFactory getSessionFactory() {
    return sessionFactory;
}

}

但是我的问题是我不想将新版本与旧库集成在一起。更新后，我遇到了

java.lang.NoSuchMethodError：org.hibernate.annotations.common.reflection.java.JavaReflectionManager.injectClassLoaderDelegate（Lorg
/ hibernate / annotations / common / reflection / ClassLoaderDelegate;）V

经常。烦死了 通常Mkyong提供了很好的解决方案，但是在我的情况下，他写了Stackoverflow的相反解决方案…

因此，我搜索了一些存储库，发现了一个非常简单的解决方案（比较：http :
//hibernate.org/orm/downloads/）：

<!-- HIBERNATE -->
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-core</artifactId>
    <version>5.0.0.Final</version>
</dependency>

其他一些小问题使我停了下来：在中，hibernate.cfg.xml我不得不将行从更改update为auto：

<property name="hbm2ddl.auto">auto</property>

将其与我的旧pom.xml进行比较…-那时我与Hibernate进行了第一次“接触”，并添加了所有似乎有用的东西，直到它起作用为止。在这样做之后，我停止接触它了……差不多两年了……永远不要换一支“获胜”的球队，对吗？

<dependency>
            <groupId>org.hibernate.common</groupId>
            <artifactId>hibernate-commons-annotations</artifactId>
            <version>4.0.2.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>4.1.12.Final</version>
            <exclusions>
                <exclusion>
                    <artifactId>hibernate-commons-annotations</artifactId>
                    <groupId>org.hibernate.common</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>hibernate-jpa-2.1-api</artifactId>
                    <groupId>org.hibernate.javax.persistence</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>hibernate-commons-annotations</artifactId>
                    <groupId>org.hibernate</groupId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>4.1.8.Final</version>
            <exclusions>
                <exclusion>
                    <artifactId>hibernate</artifactId>
                    <groupId>org.hibernate</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>hibernate-annotations</artifactId>
                    <groupId>org.hibernate</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>hibernate-commons-annotations</artifactId>
                    <groupId>org.hibernate</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>hibernate-jpa-2.1-api</artifactId>
                    <groupId>org.hibernate.javax.persistence</groupId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
<dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-commons-annotations</artifactId>
            <version>3.2.0.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate.javax.persistence</groupId>
            <artifactId>hibernate-jpa-2.0-api</artifactId>
            <version>1.0.1.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-jpamodelgen</artifactId>
            <version>1.1.1.Final</version>
            <scope>provided</scope>
        </dependency>
2020-09-26