Spring和休眠:没有为当前线程找到会话
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【中文标题】Spring和休眠:没有为当前线程找到会话【英文标题】:Spring and hibernate: No Session found for current thread 【发布时间】:2012-05-05 02:57:51 【问题描述】:我得到以下错误
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:1024)
at com.fexco.shoptaxfreemobile.service.ProfileService.registerVisitor(ProfileService.java:57)
at com.fexco.shoptaxfreemobile.controller.ProfileController.registerVisitor(ProfileController.java:91)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at com.fexco.shoptaxfreemobile.jsonp.JsonpCallbackFilter.doFilter(JsonpCallbackFilter.java:33)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:928)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:539)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:300)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
服务类
@Service
public class ProfileService
@Resource(name = "mySessionFactory")
private SessionFactory sessionFactory;
@Autowired
private ProfileDao profileDao;
private class CountrySorter implements Comparator<Country>
@Override
public int compare(Country country1, Country country2)
if ( country1.getId().compareTo(new Long (3)) < 0)
return country1.getId().compareTo(country2.getId());
return country1.getName().compareToIgnoreCase(country2.getName());
public List<Country> getCountries()
List<VisitorCountry> visitorCountries = profileDao.getAllCountries();
List<Country> countries = new ArrayList<Country>();
for ( VisitorCountry country : visitorCountries)
countries.add(country.getCountry());
Comparator<Country> comparator = new CountrySorter();
Collections.sort(countries, comparator);
return countries;
public RegisterResponse registerVisitor(JsonVisitor visitorDetails)
Visitor storedVisitor = (Visitor) sessionFactory.getCurrentSession().get(Visitor.class, visitorDetails.getTfscNumber(), LockMode.NONE);
if ( storedVisitor == null)
storedVisitor = new Visitor(visitorDetails);
else
storedVisitor.setVisitorDetails(visitorDetails);
try
sessionFactory.getCurrentSession().saveOrUpdate(storedVisitor);
catch(Exception ex)
return new RegisterResponse(false, "Failed To Register Card. Please Try Again Later.", visitorDetails);
return new RegisterResponse(true, "", visitorDetails);
DAO 类的一点
@Service
@Transactional
public class ProfileDao
@Resource(name = "mySessionFactory")
private SessionFactory sessionFactory;
public List getAllCountries()
List<VisitorCountry> visitorCountries = sessionFactory.getCurrentSession()
.getNamedQuery("GET_ALL_COUNTRIES").list();
return visitorCountries;
public List<Retailer> getRetailerByRetailerNumber(String retailerNo)
List<Retailer> retailerByRetailerNumber = sessionFactory.getCurrentSession()
.getNamedQuery("FindRetailerByRetailerNo").setString("retailerNo", retailerNo).list();
return retailerByRetailerNumber;
我的 application-context.xml 中有这个
<tx:annotation-driven transaction-manager="transactionManager"/>
<bean id="mySessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="myDataSource" />
<property name="configLocation" value="classpath:hibernate.cfg.xml" />
<property name="hibernateProperties">
<value>
<![CDATA[
hibernate.show_sql=true
hibernate.format_sql=true
hibernate.cache.provider_class=org.hibernate.cache.NoCacheProvider
]]>
</value>
</property>
</bean>
谁能发现我为什么会收到以下错误?
【问题讨论】:
jordan002 的答案是正确的,但“真正的”问题是,您不是在您的服务中调用 DAO,而是从服务类访问数据库......另一方面,通常您希望服务方法以事务方式行事,而不仅仅是 DAO 方法 - 如果您在服务方法中有 2 次更新,而第二次更新失败,则事务不会帮助您使数据库保持一致(但这取决于您的业务逻辑)。 【参考方案1】:您使用 @Transactional 注释了您的 Dao 类,而不是您的服务类。行:
Visitor storedVisitor =
(Visitor) sessionFactory.getCurrentSession().get(Visitor.class,
visitorDetails.getTfscNumber(), LockMode.NONE);
要求您参与交易。
您可以通过在 ProfileService 类中添加 @Transactional 注释来解决此问题,或者只添加 registerVisitor() 方法。
【讨论】:
这更进一步,有助于让休眠状态写入更新/删除。【参考方案2】:我通过以下 2 个步骤解决了同样的问题
按照建议将@Transactional
放置在服务方法上
jordan002 在此页面上的回答中。
还有一件事,如果你有 2 个配置文件:说
application-context.xml
(对于数据库和应用程序上下文特定
配置)和webmvc-context.xml
(对于特定的网络/控制器
配置),那么您应该为您的
控制器和 dao。
webmvc-context.xml
在application-context.xml
之后加载。
我认为 DAO 类首先加载了事务引用
当 application-context.xml 被加载,但它被替换为
另一个对象,没有事务引用,当
webmvc-context.xml 已加载。
无论如何,我解决了扫描特定包的问题:
<context:component-scan base-package="com.app.repository" />
为application-context.xml
和
<context:component-scan base-package="com.app.web" />
为webmvc-context.xml
。
【讨论】:
【参考方案3】:使用 @Repository 更改 DAO 的注释
@Repository
public class ProfileDao
.
.
.
然后让你的服务方法@Transactional 像这样
@Transactional
public List<Retailer> getRetailerByRetailerNumber(String retailerNo)
【讨论】:
【参考方案4】:我通过以下两步解决了上述问题
1-在调用 DAO 方法的服务方法中添加 @Transactional 支持
2-通过这种方式导入spring-servlet.xml中的applicationContext.xml
<import resource="applicationContext.xml" />
<mvc:annotation-driven />
<context:component-scan base-package="com.json.api.*" />
<!--Third Party Integration should be injected in xml start here -->
<bean id="integrationInterface" class="com.json.api.IntegerationInterface"></bean>
<!--Third Party Integration should be injected in xml start here -->
<mvc:interceptors>
<bean id="apiServiceInterceptor" class="com.json.api.interceptor.ApiServiceInterceptor"></bean>
</mvc:interceptors>
<!--To Enable @Value to map key with provided fields for property files -->
<context:property-placeholder />
它消除了在 spring-servlet.xml 和 applicationContext.xml 两个地方扫描包的需要
【讨论】:
【参考方案5】:我知道这是一个很老的问题,但我遇到了这个问题,发现如果您使用的是 Spring-Java 配置,那么解决方案有几个部分。某些配置与控制器的相对放置很重要。
首先是CoreConfiguration
@Configuration
public class CoreConfiguration
@Bean
public LocalSessionFactoryBean sessionFactory()
LocalSessionFactoryBean factoryBean = new org.springframework.orm.hibernate4.LocalSessionFactoryBean();
String annotatedPckgs[] ="org.tigersndragons.reports.model.warehouse";
factoryBean.setAnnotatedPackages(annotatedPckgs);
Properties hibernateProperties = new Properties();
try
hibernateProperties.load(this.getClass().getResourceAsStream("props/hibernate.properties"));
factoryBean.setHibernateProperties(hibernateProperties);
catch (IOException e)
factoryBean.setPackagesToScan("org.telligen.reports.model.warehouse");
factoryBean.setDataSource(warehouseDataSource());//("jdbc/warehouse");
try
factoryBean.afterPropertiesSet();
catch (IOException e)
return factoryBean;
@Bean
public WarehouseDAO getWarehouseDAO()
WarehouseDAO wrhsDao = new WarehouseDAO();
wrhsDao.setSessionFactory(sessionFactory().getObject());
return wrhsDao;
...
@Configuration
public class ScheduleConfiguration
private static Logger logger = LoggerFactory.getLogger(ScheduleConfiguration.class);
@Autowired
private CoreConfiguration coreConfiguration;
@Bean
public HandlerMapping handlerMapping()
DefaultAnnotationHandlerMapping mapping = new DefaultAnnotationHandlerMapping();
mapping.setInterceptors(new Object []coreConfiguration.openSessionViewInterceptor());
return mapping;
@Bean
public HandlerAdapter handerAdapter()
return new AnnotationMethodHandlerAdapter();
@Bean
public ScheduleController scheduleController() throws Exception
ScheduleController controller = new ScheduleController();
controller.setWrhsDao(coreConfiguration.getWarehouseDAO());
return controller;
...
在控制器中,我必须设置
@Controller
@RequestMapping
public class ScheduleController
private static Logger logger = LoggerFactory.getLogger(ScheduleController.class);
private WarehouseDAO wrhsDao;
@RenderMapping
@RequestMapping("VIEW")
public String viewSchedule(Map<String, Object> modelMap)...
public void setWrhsDao(WarehouseDAO wrhsDao)
this.wrhsDao = wrhsDao;
WarehouseDAO 有 @Repository 注释,而 SessionFactory 没有自动装配。
希望这可以帮助其他有类似问题的人。
【讨论】:
【参考方案6】:我将添加一些我花了一些时间进行调试的内容:不要忘记@Transactional 注释仅适用于“公共”方法。
我把一些@Transactional 放在“受保护”的上面,然后得到了这个错误。
希望对你有帮助:)
http://docs.spring.io/spring/docs/3.1.0.M2/spring-framework-reference/html/transaction.html
方法可见性和@Transactional
当使用代理时,你应该应用@Transactional注解 仅适用于具有公共可见性的方法。如果您确实注释受保护, 带有 @Transactional 注释的私有或包可见方法, 没有引发错误,但带注释的方法没有表现出 配置的事务设置。考虑使用 AspectJ(参见 下面)如果您需要注释非公共方法。
【讨论】:
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