休眠：未配置 CurrentSessionContext
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【中文标题】休眠：未配置 CurrentSessionContext【英文标题】：Hibernate : No CurrentSessionContext configured 【发布时间】：2013-12-14 10:46:18 【问题描述】：由于某个地方的一些愚蠢错误，我被卡住了，但无法弄清楚！
休眠 4.2.6
这个问题我已经提到过，之前问过好几次，比如here
hibernate.cfg.xml
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration SYSTEM
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.bytecode.use_reflection_optimizer">false</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.password">root</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/test</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>
<property name="show_sql">true</property>
<property name="hibernate.current_session_context_class">org.hibernate.context.ThreadLocalSessionContext</property>
<mapping resource="Event.hbm.xml"></mapping>
</session-factory>
</hibernate-configuration>
Event.hbm.xml
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="com.db.pojo.Event" table="Events">
<id name="id" column="Id">
<generator class="native"></generator>
</id>
<property name="title" column="Title"></property>
<property name="date" column="Date" type="timestamp"></property>
</class>
</hibernate-mapping>
HibernateUtil
package com.db.util;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistryBuilder;
public class HibernateUtil
private static final SessionFactory sessionFactory = buildSessionFactory();
private static SessionFactory buildSessionFactory()
// TODO Auto-generated method stub
Configuration configuration = new Configuration();
configuration.configure("hibernate.cfg.xml");
ServiceRegistryBuilder serviceRegistryBuilder = new ServiceRegistryBuilder()
.applySettings(configuration.getProperties());
return configuration.buildSessionFactory(serviceRegistryBuilder
.buildServiceRegistry());
public static SessionFactory getSessionFactory()
return sessionFactory;
每当我尝试这个时：
Session session = HibernateUtil.getSessionFactory().getCurrentSession();
我明白了：
Exception in thread "main" org.hibernate.HibernateException: No CurrentSessionContext configured!
at org.hibernate.internal.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:988)
at test.EventManager.createAndStoreEvent(EventManager.java:27)
at test.EventManager.main(EventManager.java:17)
在我的个人笔记本电脑上执行后编辑
-
如果我在 cfg 文件中使用“线程”，代码运行良好
如果我使用 'ThreadLocalSessionContext'，我会得到以下异常（请注意，即使控制台上的输出现在也比之前运行的要大） - 是不是 'ThreadLocalSessionContext' 类是在 3.0 版本中不存在（我试图在 API 中找到，但该站点没有旧 API）
现在我对 dtd 持怀疑态度 - 即使指定了 SYSTEM，Hibernate 3.0 jar 是否在某处被引用而本地的 jar 被忽略？在 Internet 访问受限的机器上执行代码时，我遇到了上一个异常（没有当前上下文）。但是当我在我的个人笔记本电脑上执行同样的操作时：
eventDesciption : Team eventDate : 2013-12-12
Nov 28, 2013 8:55:59 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations 4.0.4.Final
Nov 28, 2013 8:55:59 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core 4.2.6.Final
Nov 28, 2013 8:55:59 PM org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
Nov 28, 2013 8:55:59 PM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
Nov 28, 2013 8:55:59 PM org.hibernate.cfg.Configuration configure
INFO: HHH000043: Configuring from resource: hibernate.cfg.xml
Nov 28, 2013 8:55:59 PM org.hibernate.cfg.Configuration getConfigurationInputStream
INFO: HHH000040: Configuration resource: hibernate.cfg.xml
Nov 28, 2013 8:55:59 PM org.hibernate.cfg.Configuration addResource
INFO: HHH000221: Reading mappings from resource: resources/Event.hbm.xml
Nov 28, 2013 8:55:59 PM org.hibernate.cfg.Configuration doConfigure
INFO: HHH000041: Configured SessionFactory: null
Nov 28, 2013 8:55:59 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000402: Using Hibernate built-in connection pool (not for production use!)
Nov 28, 2013 8:55:59 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000115: Hibernate connection pool size: 20
Nov 28, 2013 8:55:59 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000006: Autocommit mode: false
Nov 28, 2013 8:55:59 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000401: using driver [com.mysql.jdbc.Driver] at URL [jdbc:mysql://localhost:3306/test]
Nov 28, 2013 8:55:59 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000046: Connection properties: user=root, password=****
Nov 28, 2013 8:56:00 PM org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQLDialect
Nov 28, 2013 8:56:00 PM org.hibernate.engine.jdbc.internal.LobCreatorBuilder useContextualLobCreation
INFO: HHH000423: Disabling contextual LOB creation as JDBC driver reported JDBC version [3] less than 4
Nov 28, 2013 8:56:00 PM org.hibernate.engine.transaction.internal.TransactionFactoryInitiator initiateService
INFO: HHH000399: Using default transaction strategy (direct JDBC transactions)
Nov 28, 2013 8:56:00 PM org.hibernate.hql.internal.ast.ASTQueryTranslatorFactory <init>
INFO: HHH000397: Using ASTQueryTranslatorFactory
Nov 28, 2013 8:56:00 PM org.hibernate.internal.SessionFactoryImpl buildCurrentSessionContext
ERROR: HHH000302: Unable to construct current session context [org.hibernate.context.ThreadLocalSessionContext]
org.hibernate.service.classloading.spi.ClassLoadingException: Unable to load class [org.hibernate.context.ThreadLocalSessionContext]
at org.hibernate.service.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:152)
at org.hibernate.internal.SessionFactoryImpl.buildCurrentSessionContext(SessionFactoryImpl.java:1544)
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:516)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1790)
at com.db.util.HibernateUtil.buildSessionFactory(HibernateUtil.java:19)
at com.db.util.HibernateUtil.<clinit>(HibernateUtil.java:9)
at test.EventManager.createAndStoreEvent(EventManager.java:27)
at test.EventManager.main(EventManager.java:17)
Caused by: java.lang.ClassNotFoundException: Could not load requested class : org.hibernate.context.ThreadLocalSessionContext
at org.hibernate.service.classloading.internal.ClassLoaderServiceImpl$AggregatedClassLoader.findClass(ClassLoaderServiceImpl.java:319)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.hibernate.service.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:149)
... 7 more
Exception in thread "main" org.hibernate.HibernateException: No CurrentSessionContext configured!
at org.hibernate.internal.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:988)
at test.EventManager.createAndStoreEvent(EventManager.java:27)
at test.EventManager.main(EventManager.java:17)
【问题讨论】：
【参考方案1】：尝试改变
Session session = HibernateUtil.getSessionFactory().getCurrentSession();
到：
Session session = HibernateUtil.getSessionFactory().openSession();
【讨论】：
这解决了问题，但又引发了另一个问题。如果以这种方式使用，则必须手动关闭会话以避免打开太多会话。【参考方案2】：据我所知，您的配置不适合当前会话。而不是
<property name="hibernate.current_session_context_class">org.hibernate.context.ThreadLocalSessionContext</property>
使用
<property name="hibernate.current_session_context_class">thread</property>
有关这方面的更多信息，请访问此链接：
http://docs.jboss.org/hibernate/orm/3.3/reference/en/html/architecture.html#architecture-current-session
特别是阅读最后一段的最后几行。
对于使用 Hibernate 4.1 的用户，
<property name="hibernate.current_session_context_class">org.hibernate.context.internal.ThreadLocalSessionContext</property>
参考：https://docs.jboss.org/hibernate/orm/4.1/javadocs/org/hibernate/context/internal/ThreadLocalSessionContext.html
【讨论】：
在发布这个问题之前，我已经参考了类似的帖子，并且尝试了两种方法都徒劳无功，问题是别的！ @KaliyugAntagonist 当您只写thread 而不是org.hibernate.context.ThreadLocalSessionContext 时会出现什么异常？
我已经编辑了我的帖子 - 我在不同的机器上得到了不同的行为。
Hibernate 教程中指出“线程”是设计和原型需要考虑的值，但不适用于生产。于是我去了hibernate库（v4.3），发现org.hibernate.context.ThreadLocalSessionContext这个类不存在。相反，有一个 org.hibernate.context.internal.ThreadLocalSessionContext 类对我有用。
@Solostaran14，感谢您指出这一点。更新了答案。【参考方案3】：
您需要更改您的属性：
org.hibernate.context.internal.ThreadLocalSessionContext 到 线程
【讨论】：
【参考方案4】：我知道这是一篇旧帖子，但以防万一有人像我一样来到这里 - 这是有效的：
package com.spring.util;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class HibernateUtil
private static HibernateUtil instance = new HibernateUtil();
private SessionFactory sessionFactory;
private HibernateUtil()
this.sessionFactory = buildSessionFactory();
private synchronized static SessionFactory buildSessionFactory()
return new Configuration().configure().buildSessionFactory();
public static HibernateUtil getInstance()
if(instance == null)
return new HibernateUtil();
return instance;
public SessionFactory getSessionFactory()
return sessionFactory;
现在调用它非常简单：
SessionFactory sessionFactory = HibernateUtil.getInstance().getSessionFactory();
下一步将如下所示：
public void saveOrUpdate(MyObject myObj)
Session session = sessionFactory.getCurrentSession();
session.beginTransaction();
session.saveOrUpdate(myObj);
session.getTransaction().commit();
还要确保 hibernate.cfg.xml 在 src/main/resources 文件夹中。
【讨论】：
这还是有问题的。得到错误 org.hibernate.HibernateException: No CurrentSessionContext configured! 好的，不知道发生了什么，因为我看不到完整的堆栈跟踪，但也许这篇文章会对你有所帮助：***.com/questions/7281045/…【参考方案5】：对于休眠 4.x，您需要使用 org.hibernate.context.internal.ThreadLocalSessionContext 而不是 org.hibernate.context.ThreadLocalSessionContext .
但是，您可以将属性设置为 thread 而不是 Thread。
<property name="hibernate.current_session_context_class">thread</property>
【讨论】：
【参考方案6】：尝试改变
Session session = HibernateUtil.getSessionFactory().getCurrentSession();
到：
Session session = HibernateUtil.getSessionFactory().openSession();
【讨论】：
正如目前所写，您的答案尚不清楚。请edit 添加其他详细信息，以帮助其他人了解这如何解决所提出的问题。你可以找到更多关于如何写好答案的信息in the help center。以上是关于休眠：未配置 CurrentSessionContext的主要内容，如果未能解决你的问题，请参考以下文章
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