java - FUSE hibernate 应用程序抛出 No Session found for current thread 异常

Question

我正在 FUSE 服务器上进行 Hibernate 的简单演示，我在这个 github location 中找到了这个示例代码示例.我尝试在集成了 Hibernate 4 的 FUSE 6.3 中运行此代码，我能够安装所有必需的依赖项，但是当我尝试执行数据库操作时，出现以下错误。

org.hibernate.HibernateException: No Session found for current thread
at         org.springframework.orm.hibernate4.SpringSessionContext.currentSession(SpringSessionContext.java:97)
at org.hibernate.internal.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:997)
at com.vcc.poc.dao.impl.StudentDaoImpl.getStudent(StudentDaoImpl.java:67)
at sun.reflect.GeneratedMethodAccessor242.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[:1.8.0_111]
at java.lang.reflect.Method.invoke(Method.java:498)[:1.8.0_111]
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58)[org.springframework.osgi:spring-osgi-core:1.2.1]
at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62)[org.springframework.osgi:spring-osgi-core:1.2.1]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:132)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:120)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56)[org.springframework.osgi:spring-osgi-core:1.2.1]
at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39)[org.springframework.osgi:spring-osgi-core:1.2.1]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59)[org.springframework.osgi:spring-osgi-core:1.2.1]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:132)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:120)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at com.sun.proxy.$Proxy93.getStudent(Unknown Source)
at com.vcc.poc.service.impl.StudentServiceImpl.getStudent(StudentServiceImpl.java:15)
at sun.reflect.GeneratedMethodAccessor240.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[:1.8.0_111]
at java.lang.reflect.Method.invoke(Method.java:498)[:1.8.0_111]
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:96)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at com.sun.proxy.$Proxy94.getStudent(Unknown Source)
at sun.reflect.GeneratedMethodAccessor240.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[:1.8.0_111]
at java.lang.reflect.Method.invoke(Method.java:498)[:1.8.0_111]
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58)[org.springframework.osgi:spring-osgi-core:1.2.1]
at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62)[org.springframework.osgi:spring-osgi-core:1.2.1]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:132)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:120)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56)[org.springframework.osgi:spring-osgi-core:1.2.1]
at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39)[org.springframework.osgi:spring-osgi-core:1.2.1]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59)[org.springframework.osgi:spring-osgi-core:1.2.1]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:132)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]
at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:120)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-aop:3.2.16.RELEASE_1]

这是我的 StudentImpl.java 文件内容。

    package com.vcc.poc.dao.impl;

    import java.util.List;

    import org.apache.commons.logging.Log;
    import org.apache.commons.logging.LogFactory;
    import org.hibernate.HibernateException;
    import org.hibernate.Query;
    import org.hibernate.SessionFactory;
    import org.hibernate.internal.SessionImpl;

    import com.vcc.poc.dao.StudentDao;
    import com.vcc.poc.model.Student;

    public class StudentDaoImpl implements StudentDao{

    private static final transient Log LOG = LogFactory.getLog(StudentDaoImpl.class);

        /** The session factory. */
        private SessionFactory sessionFactory;

        /** The q. */
        private Query q = null;

        /** The Constant findStudentByReference. */
        private final static String findStudentByReference =
            "select i from Student as i where i.studentRef = :ref";

        /** The Constant findStudent. */
        private final static String findStudent =
            "select i from Student as i";

        /**
         * Sets the session factory.
         * 
         * @param sessionFactory the new session factory
         */
        public void setSessionFactory( SessionFactory sessionFactory )
        {
            this.sessionFactory = sessionFactory;
        }

        /*
         * (non-Javadoc)
         * @see org.apache.camel.example.reportincident.dao.IncidentDAO#findIncident()
         */
        public List<Student>  findStudent()
            throws HibernateException
        {

            // Prepare query
            q = this.sessionFactory.getCurrentSession().createQuery( findStudent );

            // Retrieve the Incidents from database
            List<Student> list = q.list();

            return list;

        }

        /*
         * (non-Javadoc)
         * @see org.apache.camel.example.reportincident.dao.IncidentDAO#getIncident(long)
         */
        public Student getStudent(int id) 
        {
            return (Student) this.sessionFactory.getCurrentSession().get( Student.class, id );
        }


        /*
         * (non-Javadoc)
         * @see org.apache.camel.example.reportincident.dao.IncidentDAO#saveIncident(org.apache.camel.example.reportincident.model.Incident)
         */
        public void saveStudent(Student Student)
        {
            SessionImpl session = (SessionImpl) this.sessionFactory.getCurrentSession();
            this.sessionFactory.getCurrentSession().saveOrUpdate( Student );
        }


    }

根据异常下面是抛出异常的那一行

return (Student) this.sessionFactory.getCurrentSession().get( Student.class, id );

这是我在 META-INF/spring 文件夹中的 data-source-beans.xml

    <?xml version="1.0" encoding="UTF-8"?>
    <!--
        Licensed to the Apache Software Foundation (ASF) under one or more
        contributor license agreements.  See the NOTICE file distributed with
        this work for additional information regarding copyright ownership.
        The ASF licenses this file to You under the Apache License, Version 2.0
        (the "License"); you may not use this file except in compliance with
        the License.  You may obtain a copy of the License at

        http://www.apache.org/licenses/LICENSE-2.0

        Unless required by applicable law or agreed to in writing, software
        distributed under the License is distributed on an "AS IS" BASIS,
        WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
        See the License for the specific language governing permissions and
        limitations under the License.
    -->
    <beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:context="http://www.springframework.org/schema/context"
        xmlns:osgi="http://www.springframework.org/schema/osgi"
        xmlns:osgix="http://www.springframework.org/schema/osgi-compendium"
        xsi:schemaLocation="
           http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context.xsd
           http://www.springframework.org/schema/osgi
           http://www.springframework.org/schema/osgi/spring-osgi.xsd
           http://www.springframework.org/schema/osgi-compendium
           http://www.springframework.org/schema/osgi-compendium/spring-osgi-compendium.xsd">

        <context:annotation-config />
        <context:property-placeholder properties-ref="preProps" />  

        <!--  DB connection and persistence layer -->
        <!--  DataSource Definition  -->
        <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
            <property name="driverClassName" value="${driverClassName}" />
            <property name="url" value="${url}" />
            <property name="username" value="${username}" />
            <property name="password" value="${password}" />
        </bean>


        <!--  Spring Data Access Exception Translator Definition    -->
        <bean id="jdbcExceptionTranslator" class="org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator">
            <property name="dataSource">
                <ref bean="dataSource" />
            </property>
        </bean>

        <!--  Hibernate SessionFactory Definition -->
        <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">

            <property name="mappingLocations">
                <list>
                    <value>classpath*:META-INF/com/vcc/poc/model/*.hbm.xml</value>
                </list>
            </property>

            <property name="hibernateProperties">
                <props>
                    <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
                    <prop key="hibernate.show_sql">false</prop>
                    <prop key="hibernate.format_sql">true</prop>
                    <prop key="hibernate.cglib.use_reflection_optimizer">true</prop>
                    <prop key="hibernate.jdbc.batch_size">10</prop>
                    <prop key="hibernate.query.factory_class">org.hibernate.hql.internal.classic.ClassicQueryTranslatorFactory</prop>
                    <!-- 
                    <prop key="hibernate.transaction.manager_lookup_class">org.springframework.orm.hibernate3.LocalTransactionManagerLookup</prop>
                    <prop key="hibernate.transaction.factory_class">org.hibernate.transaction.JTATransactionFactory</prop>
                     -->
                </props>
            </property>
            <property name="dataSource">
                <ref bean="dataSource" />
            </property>
            <!-- 
            <property name="jtaTransactionManager">
              <osgi:reference>
                 <osgi:interfaces>
                   <value>org.springframework.transaction.PlatformTransactionManager</value>
                   <value>javax.transaction.TransactionManager</value>
                </osgi:interfaces>
               </osgi:reference>
            </property>
            -->

        </bean>

        <!-- Hibernate Transaction Manager Definition -->
        <bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
            <property name="sessionFactory">
                <ref local="sessionFactory" />
            </property>
        </bean>


        <!--
            Hibernate Transaction Manager exported as OSGI service because used
            org.apache.camel.example.reportincident.service

        <osgi:service id="transactionManagerOsgi" ref="transactionManager"
            interface="org.springframework.transaction.PlatformTransactionManager" />
            -->

        <osgix:cm-properties id="preProps" persistent-id="com.vcc.poc.dao.datasource">
            <prop key="driverClassName">com.mysql.jdbc.Driver</prop>
            <prop key="url">jdbc:mysql:///demo</prop>
            <prop key="username">root</prop>
            <prop key="password">password</prop>        
        </osgix:cm-properties>



    </beans>

这是我的项目结构。

有没有人在 FUSE hibernate 集成中遇到过此类问题。我能够毫无问题地安装项目。但是每当我尝试执行数据库操作时，我都会收到此错误。

请专家帮我解决这个问题。

Answer 1

您可以通过更改以下内容来解决它。

根据以下帖子将以下内容添加到 beans 标记中的 schemaLocation。

http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-2.5.xsd  

您还应该在其中添加以下行。基于following post.

<tx:annotation-driven/>
<context:annotation-config />
<context:component-scan base-package="com.vcc.poc"></context:component-scan>

然后为例如方法添加@Transactional注解

    @Transactional
    public Student getStudent(int id)

更改的 beans 注释应类似于以下内容。

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:osgi="http://www.springframework.org/schema/osgi"
    xmlns:osgix="http://www.springframework.org/schema/osgi-compendium"
    xsi:schemaLocation="
       http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/osgi
       http://www.springframework.org/schema/osgi/spring-osgi.xsd
       http://www.springframework.org/schema/osgi-compendium
       http://www.springframework.org/schema/osgi-compendium/spring-osgi-compendium.xsd

      http://www.springframework.org/schema/tx
      http://www.springframework.org/schema/tx/spring-tx-2.5.xsd          
      ">

    <tx:annotation-driven/>
    <context:annotation-config />
    <context:property-placeholder properties-ref="preProps" />  
    <context:component-scan base-package="com.vcc.poc"></context:component-scan>