空指针的异常没有找出来，求解

1. package com.bjsxt.utils;

import org.hibernate.Hibernate;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.hibernate.metamodel.source.annotations.entity.ConfiguredClass;
import org.omg.CORBA.PRIVATE_MEMBER;
import oracle.net.aso.f;
public class HibernateUtil {

private static String HIBERNATE_CONFIG_FILE = "hibernate.cfg.xml";
private static SessionFactory sessionFactory = null;
private static ThreadLocal<Session> tl = new ThreadLocal<>();
private static Configuration configure = null;

static{
    try {
            configure = new Configuration().configure("HIBERNATE_CONFIG_FILE");
        } catch (Exception e) {
            e.printStackTrace();
        System.out.println("核心装置安装失败");
    }

        try {
            sessionFactory = configure.buildSessionFactory();
        } catch (Exception e) {
            e.printStackTrace();
            System.out.println("C区以安放！");
        }
}
    private HibernateUtil(){

    }

    /**
     * 获取session
     * @return
     */
    public static Session getsession(){
        Session session = tl.get();
        if(session == null){
            session = sessionFactory.openSession();----这块是报异常的地方
            tl.set(session);
        }
        return session;
    }

    /**
     * 关闭session
     */
    public static void closeSession(){
        Session session = tl.get();
        tl.set(null);
        if(session != null){
            session.close();
        }
    }

}
2.

3.

不知道哪里来的空指针异常求解
发现问题了，就是sessionFactory是null,说是hibernate.cfg.xml没有用到，这是怎么回事？
The value of the field HibernateUtil.HIBERNATE_CONFIG_FILE is not used。。怎么改？

  if(session == null){
              这个位置输出下sessionFactory 看看是否是null
            session = sessionFactory.openSession();----这块是报异常的地方
            tl.set(session);
        }

看下 sessionFactory 这个是不是null