Spring @Transactional 调用抽象超类方法抛出 org.hibernate.HibernateException答案

【问题标题】：Spring @Transactional calling abstract superclass method throws org.hibernate.HibernateExceptionSpring @Transactional 调用抽象超类方法抛出 org.hibernate.HibernateException
【发布时间】：2017-02-17 20:10:10
【问题描述】：

我已经阅读了 20 多个与此相关的有关 stackoverflow 的问题，但没有一个有效。

基本上我有一个带有 3 个方法的服务抽象超类。 Persist 类似于模板方法，而 save 和 update 仅在需要时才被覆盖。

public abstract class BaseService<E> implements ServiceImpl{
    protected E save(E object, Class<E> returnedClass){//save object}
    protected E update(E object){//update object}

    public boolean persist(E object) {
        //validation rules

        if(shouldSave) {
            save(object);
        }else {
            update(object);
        }
    }
}

那么我就有了这个子类

@Service
@Transactional
public CompanyService extends BaseService<Company> {
    @Autowired
    private CompanyRepository repository;

    public void testSaving(Company company) {
        repository.save(company);
    }

    @Override //from service impl
    public CommpanyRepositoy getRepository() {
        return repository;
    }
}

这是我的切入点

@RestController
@RequestMapping("/company")
public CompanyRestController {
    @Autowired
    private CompanyService service;

    @RequestMapping(value = "/save", method = RequestMethod.POST)
    public boolean save(@RequestBody Company company) {
        return service.persist(company);
    }
}

现在，问题是，如果我调用 testSaving 方法，一切正常。但是，当我调用 persist 方法时，它总是给出提到的错误。我已经尝试了很多东西，比如将@Transactional 添加到BaseService 超类，甚至将它添加到我的存储库中都不起作用。拜托，我需要解决这个问题，它让我发疯。有什么建议吗？

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 br.com.jeffersontpadua.spring.generic.BaseRepository.getSession(BaseRepository.java:56)
    at br.com.jeffersontpadua.spring.generic.BaseRepository.save(BaseRepository.java:27)
    at br.com.jeffersontpadua.spring.service.BaseService.save(BaseService.java:45)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:333)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:723)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:655)
    at br.com.jeffersontpadua.spring.service.CompanyService$$EnhancerBySpringCGLIB$$a3329725.save(<generated>)
    at br.com.jeffersontpadua.spring.service.BaseService.persist(BaseService.java:34)
    at br.com.jeffersontpadua.spring.rest.CompanyRestController.save(CompanyRestController.java:41)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:114)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:650)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at br.com.jeffersontpadua.spring.filter.RequestFilter.doFilter(RequestFilter.java:34)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:745)

【问题讨论】：

当您询问异常时，总是发布异常的完整堆栈跟踪。
@JBNizet 问题已更新

标签： spring hibernate spring-transactions transactional

【解决方案1】：

这是故意的，请参阅SPR-7824。

您基本上需要将@Transactional 注释放在超类而不是子类上，这将导致所有子类方法以及超类上的方法都是事务性的。

如果您不能这样做，请覆盖子类中的方法并委托给超类。

【讨论】：

我已将@Transactional 添加到超类中，但即便如此它也不起作用。我考虑过覆盖方法，但我认为它看起来不太好。就没有别的办法了吗？
嘿，伙计，出于某种未知的原因，重写事务中涉及的所有方法并调用超类，使其工作，但这会产生很多问题。例如，现在，任何人都可以覆盖我的模板方法的默认实现。您对如何在不覆盖的情况下使其工作有任何想法吗？

【解决方案2】：

我终于找到了实现这一点的方法，因此，对于仍在努力解决此问题的任何人，诀窍是将 @Transactional(propagation = Propagation.REQUIRES_NEW) 添加到您的超类 xD 中

【讨论】：