ThreadLocal

最新推荐文章于 2024-10-20 08:30:00 发布

火火儿

最新推荐文章于 2024-10-20 08:30:00 发布

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本文链接：https://blog.youkuaiyun.com/weixin_36024620/article/details/78165746

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package main.cn.happy.entity.cn.hql02.hql.util;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

/**
 * Created by lenovo on 2017/10/6.
 */
public class hibernateUtil {
    static ThreadLocal<Session> tlSession;
    static Configuration cfg;
    static SessionFactory sessionFactory;

    // 静态代码块
    static {
        //创建configure 对象
        cfg = new Configuration().configure();
        //
        sessionFactory = cfg.buildSessionFactory();
        tlSession = new ThreadLocal<Session>();
    }

    public static Session getSession() {
        Session session = tlSession.get();
        if (session == null) {
            session = sessionFactory.openSession();
            tlSession.set(session);

        }

        return session;
    }

    // 关闭
    public void Close() {
        Session session = tlSession.get();
        if (session != null) {
            session.close();
            tlSession.set(null);
        }
    }

}

 ------------------------------------------------------

 
package main.cn.happy.entity.cn.hql02.hql.util;

import org.hibernate.Session;

/**
 * Created by lenovo on 2017/10/6.
 */
public class MyThread extends Thread {
    @Override
    public void run() {
        Session session = hibernateUtil.getSession();
        Session session2 = hibernateUtil.getSession();
        System.out.println(" 子线程=== 1  " + session.hashCode());
        System.out.println("    子线程===  2 " + session2.hashCode());
    }

}