Java Hibernate无法获取当前线程的事务同步会话
我和很多人都遇到过类似的问题,但我似乎不知道在我的具体案例中出了什么问题。我正在进行一个简单的数据库调用以测试数据库连接,Hibernate引发以下异常:Java Hibernate无法获取当前线程的事务同步会话,java,spring,hibernate,transactions,Java,Spring,Hibernate,Transactions,我和很多人都遇到过类似的问题,但我似乎不知道在我的具体案例中出了什么问题。我正在进行一个简单的数据库调用以测试数据库连接,Hibernate引发以下异常: Exception in thread "main" org.hibernate.HibernateException: Could not obtain transaction-synchronized Session for current thread at org.springframework.orm.hibernate4.Spri
Exception in thread "main" org.hibernate.HibernateException: Could not obtain transaction-synchronized Session for current thread
at org.springframework.orm.hibernate4.SpringSessionContext.currentSession(SpringSessionContext.java:134)
at org.hibernate.internal.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:1014)
at boardwalk.computeServer.dao.DbDaoHibernateImpl.getInterpolationJob(DbDaoHibernateImpl.java:73)
at boardwalk.computeServer.ComputeServer.test(ComputeServer.java:39)
at boardwalk.computeServer.ComputeServer.main(ComputeServer.java:32)
以下是相关代码和配置:
pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven- 4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>boardwalk</groupId>
<artifactId>computeServer</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<name>marketserver</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.1.1.RELEASE</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.33</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.1.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>4.1.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.1.1.RELEASE</version>
</dependency>
<dependency>
<groupId>javax.transaction</groupId>
<artifactId>jta</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>activesoap</groupId>
<artifactId>jaxp-api</artifactId>
<version>1.3</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>4.3.7.Final</version>
</dependency>
<dependency>
<groupId>org.apache.activemq</groupId>
<artifactId>activemq-all</artifactId>
<version>5.10.0</version>
</dependency>
<dependency>
<groupId>org.apache.activemq</groupId>
<artifactId>activemq-spring</artifactId>
<version>5.10.0</version>
<type>xsd</type>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jms</artifactId>
<version>4.1.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.1.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>4.1.1.RELEASE</version>
</dependency>
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</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>net.rforge</groupId>
<artifactId>REngine</artifactId>
<version>0.6-8.1</version>
</dependency>
<dependency>
<groupId>net.rforge</groupId>
<artifactId>Rserve</artifactId>
<version>0.6-8.1</version>
</dependency>
<dependency>
<groupId>org.R</groupId>
<artifactId>RSession</artifactId>
<version>1.0</version>
</dependency>
</dependencies>
</project>
主要类别:
import org.apache.log4j.Logger;
import org.apache.xbean.spring.context.ClassPathXmlApplicationContext;
import org.springframework.transaction.annotation.Transactional;
import boardwalk.computeServer.dao.DbDao;
public class ComputeServer {
private static final Logger LOG = Logger.getLogger(ComputeServer.class);
/**
* Runs the server
* @param args none
*/
public static void main(String[] args) {
// Create the application context
@SuppressWarnings("resource")
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("spring/beans.xml");
context.registerShutdownHook();
// Log the server start
LOG.info("Server has started");
test(context);
}
@Transactional
public static void test(ClassPathXmlApplicationContext context){
DbDao dao = (DbDao) context.getBean("dbDao");
System.err.println(dao.getInterpolationJob(1));
}
}
Spring配置文件:
<?xml version="1.0" encoding="UTF-8"?>
<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:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd">
<!-- Load the properties file -->
<context:property-placeholder location="classpath:application.properties" />
<!-- C3PO pooled database connections -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<property name="driverClass" value="${jdbc.driverClassName}" />
<property name="jdbcUrl" value="${jdbc.url}" />
<property name="user" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<!-- These are C3P0 properties -->
<property name="acquireIncrement" value="1" />
<property name="minPoolSize" value="1" />
<property name="maxPoolSize" value="10" />
</bean>
<!-- Hibernate session factory -->
<bean id="hibernateSessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan" value="boardwalk.computeServer.data" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${jdbc.dialect}</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<!-- The database DAO -->
<bean id="dbDao" class="boardwalk.computeServer.dao.DbDaoHibernateImpl">
<constructor-arg ref="hibernateSessionFactory" />
</bean>
<!-- The transaction manager -->
<tx:annotation-driven transaction-manager="transactionManager"/>
<bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="hibernateSessionFactory" />
</bean>
<context:annotation-config></context:annotation-config>
</beans>
${jdbc.dial}
真的
我应该注意,当我用“openSession()”替换“getCurrentSession()”时,程序运行良好
提前谢谢你 test()方法上的事务性是无用的,它只适用于spring托管bean。这就是为什么没有事务上下文
正如@hiimjames所说,将@Transactional放在DAO类或方法上,另一种方法是使用以下注释运行DAO测试:
@RunWith(SpringJUnit4ClassRunner.class)
这样@Transactional注释就可以工作了。我会选择避免在DAO级别使用事务。事务应该在服务中发生 我不确定这是否有帮助,但您的DAO应该是@Transactional。可能是重复的,非常感谢!修复了这个问题。@borjab下面的回答也应该考虑,以防您不想将DAO修改为显式事务
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd">
<!-- Load the properties file -->
<context:property-placeholder location="classpath:application.properties" />
<!-- C3PO pooled database connections -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<property name="driverClass" value="${jdbc.driverClassName}" />
<property name="jdbcUrl" value="${jdbc.url}" />
<property name="user" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<!-- These are C3P0 properties -->
<property name="acquireIncrement" value="1" />
<property name="minPoolSize" value="1" />
<property name="maxPoolSize" value="10" />
</bean>
<!-- Hibernate session factory -->
<bean id="hibernateSessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan" value="boardwalk.computeServer.data" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${jdbc.dialect}</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<!-- The database DAO -->
<bean id="dbDao" class="boardwalk.computeServer.dao.DbDaoHibernateImpl">
<constructor-arg ref="hibernateSessionFactory" />
</bean>
<!-- The transaction manager -->
<tx:annotation-driven transaction-manager="transactionManager"/>
<bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="hibernateSessionFactory" />
</bean>
<context:annotation-config></context:annotation-config>
</beans>