Hibernate和Spring3事务管理注释 - 配置问题：Hibernate-Exception：没有Hibernate Session绑定到线程

Question

虽然已经多次询问过这个问题，但在尝试了许多建议的解决方案之后，我仍然遇到让Spring 3与Hibernate（和Postgres）一起工作的问题。我总是得到一个类型的错误：

org.hibernate.HibernateException: No Hibernate Session bound to thread, and configuration does not allow creation of non-transactional one here

在我通过HomeController中调用的UserDAO类中调用sessionFactory.getCurrentSession()

User user = this.userService.retrieveUser((long) 1);

我使用STS模板创建一个基本的Spring-MVC目录布局，如下所示：

这是我的servlet-context.xml：

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:beans="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop 
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/context 
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->
<!-- Enables the Spring MVC @Controller programming model -->
<annotation-driven />
<!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
<resources mapping="/resources/**" location="/resources/" />

<!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->
<beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <beans:property name="prefix" value="/WEB-INF/views/" />
    <beans:property name="suffix" value=".jsp" />
</beans:bean>


<!--  Database connection  -->
<beans:bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
    <beans:property name="driverClassName" value="${jdbc.driverClassName}"/>
    <beans:property name="url" value="${jdbc.url}"/>
    <beans:property name="username" value="${jdbc.username}"/>
    <beans:property name="password" value="${jdbc.password}"/>
</beans:bean>

<!-- Hibernate -->
<beans:bean id="SessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
    <beans:property name="dataSource" ref="dataSource" />
    <beans:property name="configLocation">
        <beans:value>hibernate.cfg.xml</beans:value>
    </beans:property>

    <beans:property name="configurationClass">
        <beans:value>org.hibernate.cfg.AnnotationConfiguration</beans:value>
    </beans:property>
    <beans:property name="hibernateProperties">
        <beans:props>
            <beans:prop key="hibernate.show_sql">true</beans:prop>
            <beans:prop key="hibernate.hbm2ddl.auto">update</beans:prop>
            <beans:prop key="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</beans:prop>
        </beans:props>
    </beans:property>
</beans:bean>



 <beans:bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
    <beans:property name="sessionFactory" ref="SessionFactory"/>
 </beans:bean>

<context:property-placeholder location="jdbc.properties"/>


<context:component-scan base-package="de.codemetrix.lokalit" />

<!-- Transaction management -->
<tx:annotation-driven />

这是我的web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

<!-- The definition of the Root Spring Container shared by all Servlets and Filters -->
<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/spring/root-context.xml</param-value>
</context-param>

<!-- Creates the Spring Container shared by all Servlets and Filters -->
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<!-- Processes application requests -->
<servlet>
    <servlet-name>appServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/spring/appServlet/servlet-context.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>appServlet</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

root-context.xml不包含任何配置。

这是我的UserService类：

@Service
@Transactional
public class UserService {
@Autowired(required=true)
private UserDAO userDAO;

@Transactional
public User createUser(User user) {
    return this.userDAO.persistOrMerge(user);
}

@Transactional(readOnly=true)
public User retrieveUser(Long id) {
    return this.userDAO.findById(id);
}

}

这里是基于hibernate的UserDAO：

@Repository
public class UserDAO {
@Autowired(required=true)
private SessionFactory sessionFactory;

public User findById(Long id) {
    return (User) this.sessionFactory.getCurrentSession().createQuery(
        "from User user where user.id=?").setParameter(0, id)
        .uniqueResult();
}

public User persistOrMerge(User user) {
    return (User) this.sessionFactory.getCurrentSession().merge(user);
}
}

错误日志是：

17.07.2011 17:21:07 org.apache.catalina.core.StandardWrapperValve invoke
SCHWERWIEGEND: Servlet.service() for servlet [appServlet] in context with path
[/lokalit] threw exception [Request processing failed; nested exception is       
org.hibernate.HibernateException: No Hibernate Session bound to thread, and
configuration   does not allow creation of non-transactional one here] with root cause
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:700)
at de.codemetrix.lokalit.model.database.hibernate.UserDAO.findById(UserDAO.java:18)
at de.codemetrix.lokalit.model.database.UserService.retrieveUser(UserService.java:24)
at de.codemetrix.lokalit.controller.HomeController.home(HomeController.java:52)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:426)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:414)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at com.springsource.insight.collection.tcserver.request.HttpRequestOperationCollectionValve.invoke(HttpRequestOperationCollectionValve.java:84)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:395)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:250)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:166)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:679)

我认为这可能与<tx:annotation-driven/>无法识别模型类有关，而忽略了@Transactional注释，但我不确定，我不知道放在哪里{ {1}}找到那些课程。

非常感谢任何有关此配置的帮助！提前谢谢！

编辑：这是HomeController文件：

<tx:annotation-driven/>

Michael H。

Answer 1

您的服务方法未包含在交易中。你可以从堆栈跟踪中看出来。应该有几个与事务相关的堆栈帧以及控制器和服务之间的代理。什么是“HomeController”，它如何获得它使用的UserService实例？ <tx:annotation-driven/>标记/ bean应该出现在定义了@Transactional bean的同一个ApplicationContext中，并且看起来在你的servlet-context.xml中，所以应该没问题。

Answer 2

我终于认为我得到了我想要的东西：自动交易管理。在阅读了弹簧声明式事务管理并添加了AOP代理之后，我开始工作了。我将以下代码添加到我的servlet-context.xml中，一切都很顺利：

<tx:advice id="txAdvice" transaction-manager="transactionManager">
 <!-- the transactional semantics... -->
 <tx:attributes>
  <!-- all methods starting with 'get' are read-only -->
  <tx:method name="get*" read-only="true"/>
  <!-- other methods use the default transaction settings (see below) -->
  <tx:method name="*"/>
 </tx:attributes>
</tx:advice>

<!-- ensure that the above transactional advice runs for any execution
of an operation defined by the FooService interface -->
<aop:config>
 <aop:pointcut id="UserServiceOperation" expression="execution(* de.codemetrix.lokalit.model.database.UserService.*(..))"/>
 <aop:advisor advice-ref="txAdvice" pointcut-ref="UserServiceOperation"/>
</aop:config>

可能它需要一些微调，但现在它有效！

@Ryan：感谢您指点我进行交易管理！