沒有Hibernate會話綁定到線程，配置不允許在這里創建非事務性的

Question

當我調用使用SessionFactory.getCurrentSession()的DAO方法時，我收到此異常。 DAO類使用@Transactional注釋，我還在應用程序上下文配置文件中聲明了<tx:annotation-driven/> 。

我可以調用執行HQL查詢的DAO方法，但每當我調用首先獲得Hibernate會話的DAO方法時，我都會遇到這個異常：

SEVERE: Failed to save the object.
org.hibernate.HibernateException: No Hibernate Session bound to thread, and configuration does not allow creation of non-transactional one here
    at org.springframework.orm.hibernate3.SpringSessionContext.currentSession(SpringSessionContext.java:63)
    at org.hibernate.impl.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:622)
    at gov.noaa.ncdc.cmb.persistence.dao.GenericDaoHibernateImpl.getCurrentSession(GenericDaoHibernateImpl.java:56)
    at gov.noaa.ncdc.cmb.persistence.dao.GenericDaoHibernateImpl.saveOrUpdate(GenericDaoHibernateImpl.java:187)

我有以下應用程序上下文配置文件：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:flex="http://www.springframework.org/schema/flex"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
                           http://www.springframework.org/schema/flex
                           http://www.springframework.org/schema/flex/spring-flex-1.0.xsd
                           http://www.springframework.org/schema/tx
                           http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">

    <!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
    <!--  load values used for bean properties  -->
    <!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
    <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <value>applicationContext.properties</value>
        </property>
    </bean>


    <!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
    <!--  DataSource where objects will be persisted  -->
    <!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="username" value="${datasource.username}" />
        <property name="password" value="${datasource.password}" />
        <property name="url" value="${datasource.url}" />
        <property name="driverClassName" value="${datasource.driver}" />
    </bean>


    <!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
    <!-- Factory bean for Hibernate Sessions -->
    <!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
    <bean id="hibernateSessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="annotatedClasses">
            <list>
                <value>gov.noaa.ncdc.cmb.esrl.domain.entity.EsrlDailyAvg</value>
                <value>gov.noaa.ncdc.cmb.esrl.domain.entity.EsrlObservations</value>
                <value>gov.noaa.ncdc.cmb.esrl.domain.entity.EsrlStation</value>
            </list>
        </property>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">${hibernate.dialect}</prop>
                <prop key="hibernate.show_sql">false</prop>
                <prop key="hibernate.format_sql">true</prop>
                <prop key="hibernate.use_sql_comments">true</prop>
                <prop key="hibernate.jdbc.batch_size">50</prop>
                <prop key="hibernate.query.substitutions">true 1, false 0</prop>
                <prop key="hibernate.max_fetch_depth">6</prop>
                <prop key="hibernate.hbm2ddl.auto">${hibernate.hbm2ddlauto}</prop>
                <prop key="hibernate.cache.use_second_level_cache">${hibernate.use_second_level_cache}</prop>
            </props>
        </property>
    </bean>


    <!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
    <!--  Transaction Manager bean  -->
    <!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
    <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
        <property name="sessionFactory" ref="hibernateSessionFactory" />
    </bean>


    <!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
    <!--  enable the configuration of transactional behavior based on annotations  -->
    <!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
    <tx:annotation-driven transaction-manager="transactionManager" />


    <!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
    <!--  DAO for ESRL Station objects  -->
    <!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
    <bean id="esrlStationDao" class="gov.noaa.ncdc.cmb.esrl.domain.dao.EsrlStationDaoHibernateImpl">
        <property name="sessionFactory" ref="hibernateSessionFactory" />
        <property name="persistentClass" value="gov.noaa.ncdc.cmb.esrl.domain.entity.EsrlStation" />
    </bean>


    <!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
    <!--  DAO for ESRL Observations objects  -->
    <!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
    <bean id="esrlObservationsDao" class="gov.noaa.ncdc.cmb.esrl.domain.dao.EsrlObservationsDaoHibernateImpl">
        <property name="sessionFactory" ref="hibernateSessionFactory" />
        <property name="persistentClass" value="gov.noaa.ncdc.cmb.esrl.domain.entity.EsrlObservations" />
    </bean>


    <!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
    <!--  DAO for ESRL daily average objects  -->
    <!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
    <bean id="esrlDailyAvgDao" class="gov.noaa.ncdc.cmb.esrl.domain.dao.EsrlDailyAvgDaoHibernateImpl">
        <property name="sessionFactory" ref="hibernateSessionFactory" />
        <property name="persistentClass" value="gov.noaa.ncdc.cmb.esrl.domain.entity.EsrlDailyAvg" />
    </bean>


</beans> 

通用DAO類（我的程序中使用的DAO從中擴展）如下所示：

package gov.noaa.ncdc.cmb.persistence.dao;

import gov.noaa.ncdc.cmb.persistence.entity.PersistentEntity;
import java.io.Serializable;
import java.util.Collection;
import java.util.Date;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Criterion;
import org.hibernate.criterion.Example;

/**
 * This class is an implementation of GenericDao<T, PK> using Hibernate.
 */
public class GenericDaoHibernateImpl<T extends PersistentEntity<PK>, PK extends Serializable>
    implements GenericDao<T, PK>
{
    private SessionFactory sessionFactory;

    static private Log log = LogFactory.getLog(GenericDaoHibernateImpl.class);

    private Class<T> persistentClass;

    /**
     * Can be used within subclasses as a convenience method.
     * 
     * @param criterionList the criteria to find by
     * @return the list of elements that match the specified criteria
     */
    protected List<T> findByCriteria(final List<Criterion> criterionList)
    {
        Criteria criteria = getCurrentSession().createCriteria(persistentClass);
        for (Criterion criterion : criterionList)
        {
            criteria.add(criterion);
        }
        return criteria.list();
    }

    protected String getCanonicalPersistentClassName()
    {
        return persistentClass.getCanonicalName();
    }

    /**
     * Gets the current Hibernate Session object.
     * 
     * @return
     */
    protected Session getCurrentSession()
    {
        return sessionFactory.getCurrentSession();
    }

    /*
     * This method only provided for interface compatibility.  Not recommended for use with large batches 
     * (this is an inefficient implementation, and it's somewhat difficult to perform batch operations with Hibernate).
     * 
     * (non-Javadoc)
     * @see gov.noaa.ncdc.cmb.persistence.dao.GenericDao#batchInsert(java.util.Collection)
     */
    @Override
    public int[] batchInsert(final Collection<T> entityCollection)
    {
        int[] updateCounts = new int[entityCollection.size()];
        int i = 0;
        for (T entity : entityCollection)
        {
            try
            {
                saveOrUpdate(entity);
                updateCounts[i] = 1;
                i++;
            }
            catch (Exception ex)
            {
                clear();
                throw new RuntimeException(ex);
            }
        }
        flush();
        clear();

        return updateCounts;
    }

    /*
     * This method only provided for interface compatibility.  Not recommended for use with large batches 
     * (this is an inefficient implementation, and it's somewhat difficult to perform batch operations with Hibernate).
     * 
     * (non-Javadoc)
     * @see gov.noaa.ncdc.cmb.persistence.dao.GenericDao#batchUpdate(java.util.Collection)
     */
    @Override
    public int[] batchUpdate(final Collection<T> entityCollection)
    {
        return batchInsert(entityCollection);
    }

    /**
     * Completely clear the session. Evict all loaded instances and cancel all pending saves, updates and deletions. Do
     * not close open iterators or instances of ScrollableResults.
     */
    public void clear()
    {
        getCurrentSession().clear();
    }

    /*
     * (non-Javadoc)
     * @see gov.noaa.ncdc.cmb.persistence.dao.GenericDao#delete(gov.noaa.ncdc.cmb.persistence.entity.PersistentEntity)
     */
    @Override
    public void delete(final T persistentObject)
    {
        getCurrentSession().delete(persistentObject);
    }

    /*
     * (non-Javadoc)
     * @see gov.noaa.ncdc.cmb.persistence.dao.GenericDao#findAll()
     */
    @Override
    public List<T> findAll()
    {
        return getCurrentSession().createQuery("from " + persistentClass.getName()).list();
    }

    /**
     * Finds a collection of entity objects which match to the example instance, minus any specified properties which should be excluded from the matching.
     * 
     * @param exampleInstance
     * @param excludeProperty
     * @return
     */
    public List<T> findByExample(final T exampleInstance,
                                 final String[] excludeProperty)
    {
        Criteria criteria = getCurrentSession().createCriteria(persistentClass);
        Example example = Example.create(exampleInstance);
        if (excludeProperty != null)
        {
            for (String exclude : excludeProperty)
            {
                example.excludeProperty(exclude);
            }
        }
        criteria.add(example);
        return criteria.list();
    }

    /*
     * (non-Javadoc)
     * @see com.sun.cloud.lifecycle.core.persistence.dao.GenericDao#findById(java.io.Serializable)
     */
    @Override
    public T findById(final PK id)
    {
        return (T) getCurrentSession().load(persistentClass, id);
    }

    /**
     * Force this session to flush. Must be called at the end of a unit of work, before commiting the transaction and
     * closing the session (depending on flush-mode, Transaction.commit() calls this method).
     * 
     * Flushing is the process of synchronizing the underlying persistent store with persistable state held in memory.
     */
    public void flush()
    {
        getCurrentSession().flush();
    }

    /*
     * (non-Javadoc)
     * @see gov.noaa.ncdc.cmb.persistence.dao.GenericDao#saveOrUpdate(gov.noaa.ncdc.cmb.persistence.entity.PersistentEntity)
     */
    @Override
    public T saveOrUpdate(final T entity)
    {
        try
        {
            entity.setUpdatedDate(new Date());
            getCurrentSession().saveOrUpdate(entity);
            return entity;
        }
        catch (Exception ex)
        {
            String errorMessage = "Failed to save the object.";
            log.error(errorMessage, ex);
            throw new RuntimeException(errorMessage, ex);
        }
    }

    /**
     * Setter for the persistentClass property.
     * 
     * @param persistentClass
     */
    public void setPersistentClass(final Class<T> persistentClass)
    {
        this.persistentClass = persistentClass;
    }

    /**
     * Property setter.
     * 
     * @param sessionFactory
     */
    public void setSessionFactory(final SessionFactory sessionFactory)
    {
        this.sessionFactory = sessionFactory;
    }

}

我的應用程序從應用程序上下文獲取DAO：

// load the Spring application context, get the DAOs
ApplicationContext applicationContext = new ClassPathXmlApplicationContext(new String[] { "dailyAveragingApplicationContext.xml" });
esrlDailyAvgDao = (EsrlDailyAvgDao) applicationContext.getBean("esrlDailyAvgDao");
esrlObservationsDao = (EsrlObservationsDao) applicationContext.getBean("esrlObservationsDao");

當我嘗試保存實體時遇到異常：

esrlDailyAvgDao.saveOrUpdate(esrlDailyAvg);

DAO類本身使用Transactional注釋：

@Transactional
public class EsrlDailyAvgDaoHibernateImpl
    extends GenericDaoHibernateImpl<EsrlDailyAvg, Long>
    implements EsrlDailyAvgDao

異常堆棧跟蹤如下所示：

SEVERE: Failed to save the object.
org.hibernate.HibernateException: No Hibernate Session bound to thread, and configuration does not allow creation of non-transactional one here
    at org.springframework.orm.hibernate3.SpringSessionContext.currentSession(SpringSessionContext.java:63)
    at org.hibernate.impl.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:622)
    at gov.noaa.ncdc.cmb.persistence.dao.GenericDaoHibernateImpl.getCurrentSession(GenericDaoHibernateImpl.java:56)
    at gov.noaa.ncdc.cmb.persistence.dao.GenericDaoHibernateImpl.saveOrUpdate(GenericDaoHibernateImpl.java:187)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:196)
    at $Proxy19.saveOrUpdate(Unknown Source)
    at gov.noaa.ncdc.cmb.esrl.ingest.EsrlDailyAvgProcessor.main(EsrlDailyAvgProcessor.java:469)

Answer 1

我通過將@Transactional添加到基本/通用Hibernate DAO實現類（實現我在主程序中使用的DAO繼承的saveOrUpdate（）方法的父類）解決了這個問題，即需要在實際上指定@Transactional實現該方法的類。 我的假設是，如果我在子類上聲明了@Transactional ，那么它包含了子類繼承的所有方法。 但是，似乎@Transactional注釋僅適用於類中實現的方法，而不適用於類繼承的方法。

Answer 2

我收到以下錯誤：

org.hibernate.HibernateException: No Hibernate Session bound to thread, and configuration does not allow creation of non-transactional one here
    at org.springframework.orm.hibernate3.SpringSessionContext.currentSession(SpringSessionContext.java:63)

我通過更改我的hibernate屬性文件來修復此問題

hibernate.current_session_context_class=thread

我的代碼和配置文件如下

session =  getHibernateTemplate().getSessionFactory().getCurrentSession();

session.beginTransaction();

session.createQuery(Qry).executeUpdate();

session.getTransaction().commit();

在屬性文件上

hibernate.dialect=org.hibernate.dialect.MySQLDialect

hibernate.show_sql=true

hibernate.query_factory_class=org.hibernate.hql.ast.ASTQueryTranslatorFactory

hibernate.current_session_context_class=thread

在配置文件上

<properties>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${hibernate.dialect}</prop>
<prop key="hibernate.show_sql">${hibernate.show_sql}</prop>         
<prop key="hibernate.query.factory_class">${hibernate.query_factory_class}</prop>       
<prop key="hibernate.generate_statistics">true</prop>
<prop key="hibernate.current_session_context_class">${hibernate.current_session_context_class}</prop>
</props>
</property>
</properties>

謝謝，
阿肖克

Answer 3

我添加屬性后：

<prop key="hibernate.current_session_context_class">thread</prop>我得到的異常如下：

org.hibernate.HibernateException: createQuery is not valid without active transaction
org.hibernate.HibernateException: save is not valid without active transaction.

所以我認為設置該屬性不是一個好的解決方案。

最后我解決了“沒有Hibernate Session綁定到線程”的問題：

1. <!-- <prop key="hibernate.current_session_context_class">thread</prop> -->
2.add <tx:annotation-driven />到servlet-context.xml或dispatcher-servlet.xml
3.在@Service和@Repository之后添加@Transactional

Answer 4

今天我遇到了同樣的問題。雖然在這里尋找解決方案，但我犯了一個愚蠢的錯誤而不是導入

import org.springframework.transaction.annotation.Transactional;

不知不覺我進口了

import javax.transaction.Transactional;

改變它一切都很好。

所以想到分享，如果有人犯同樣的錯誤。

Answer 5

你可以在子類中使用@Transactional，但是你必須覆蓋每個方法並調用super方法才能使它工作。

例：

@Transactional(readOnly = true)
public class Bob<SomeClass> {
   @Override
   public SomeClass getValue() {
       return super.getValue();
   }
}

這允許它為它所需的每種方法設置它。

Answer 6

您是否在webapp的web.xml配置了org.springframework.orm.hibernate3.support.OpenSessionInViewFilter （假設您的應用程序是一個webapp），或相應地包裝調用？

Answer 7

每當你面對下面的錯誤時，只需遵循它。

org.hibernate.HibernateException：沒有Hibernate Session綁定到線程，並且配置不允許在org.springframework.orm.hibernate3.SpringSessionContext.currentSession（SpringSessionContext.java:63）中創建非事務性的

為每個實現類的方法放置一個@Transactional注釋。

Answer 8

您在彈簧上下文中缺少<context:annotation-config /> ，因此沒有掃描注釋！