春季休眠异步任务问题未找到当前线程的会话

这是我保存数据的方法.一切正常

    public Future<SocialLogin> loginUserSocial(Social model) {
        Session session = this.sessionFactory.getCurrentSession();
        session.save(model);
        SocialLogin dto = new SocialLogin();
        dto.setUser_id(model.getUser_id());
        return new AsyncResult<SocialLogin>(dto);
    }

但是如果我将@Async注释放在方法上
我有以下例外.

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.util.concurrent.ExecutionException: org.hibernate.HibernateException: No Session found for current thread
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982)
    org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

如果有人知道此例外,我将不胜感激.
谢谢

解决方法:

从here

It is not intended that implementors be threadsafe. Instead each thread/transaction should obtain its own instance from a SessionFactory.

根据文档,线程应具有自己的会话.如果您通过sessionFactory.getCurrentSession()获得会话；您将获得null,因为它的访问受ThreadLocals保护.

您可以通过此代码为每个线程创建新会话.

@Async
public Future<SocialLogin> loginUserSocial(Social model) {
        Session session = this.sessionFactory.openSession();
        session.save(model);
        SocialLogin dto = new SocialLogin();
        dto.setUser_id(model.getUser_id());
        return new AsyncResult<SocialLogin>(dto);
    }

标签：completable-future,multithreading,hibernate,spring,java
来源： https://codeday.me/bug/20191111/2023275.html