无法从 HibernateUtil 类型对非静态方法 getSessionFactory() 进行静态引用

Question

尝试使用 Hibernate 和 Struts2 显示来自 MySQL 数据库的数据，我可以将数据添加到数据库中，并且值正在更新，但我无法在 jsp 页面中显示它。

错误：无法从类型 HibernateUtil

对非静态方法 getSessionFactory() 进行静态引用

这是我的页面..

HibernateUtils.java

package com.stg.shdb2.utils;

import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;


public class HibernateUtils {   

    private static final SessionFactory sessionFactory=buildSessionFactory();

    private static  SessionFactory buildSessionFactory() {
        try {
            // Create the SessionFactory from hibernate.cfg.xml
            return new AnnotationConfiguration().configure().buildSessionFactory();
        } catch (Throwable ex) {
            // Make sure you log the exception, as it might be swallowed
            System.err.println("Initial SessionFactory creation failed." + ex);
            throw new ExceptionInInitializerError(ex);
        }
    }

    public static  SessionFactory getSessionFactory() {
        return sessionFactory;
    }
}

DataConnect.java

package com.stg.shdb2.dao;

import java.util.List;

import net.sf.gilead.core.hibernate.HibernateUtil;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.apache.cxf.service.invoker.SessionFactory;

import com.stg.shdb2.beans.User;
import com.stg.shdb2.utils.HibernateUtils;

public class DataConnect {
    Session sess;

    public void insertDetails(User user){
        try{
            sess = (Session) HibernateUtils.getSessionFactory();
            Transaction tx = sess.beginTransaction();
            sess.save(user);

            System.out.println("Data Inserted in user_details");

            tx.commit();
            sess.close();
        }
        catch(Exception exep){
            exep.printStackTrace();
        }
    }


    @SuppressWarnings("unchecked")
    public List<User> list() {      
                 Session session = HibernateUtil.getSessionFactory().getCurrentSession();
                 session.beginTransaction();
                 List<User> user = null;
                 try {

                     user = (List<User>) session.createQuery("from user_data").list();

                 } catch (HibernateException e) {
                 e.printStackTrace();
                 session.getTransaction().rollback();
            }
        session.getTransaction().commit();
        return user;
    }

}

Answer 1

你需要改变这个：

Session session = HibernateUtil.getSessionFactory().getCurrentSession();

对此：

Session session = HibernateUtils.getSessionFactory().getCurrentSession();

class 被命名为 HibernateUtils，而不是 HibernateUtil。

无法从 HibernateUtil 类型对非静态方法 getSessionFactory() 进行静态引用

Cannot make a static reference to the non-static method getSessionFactory() from the type HibernateUtil

java

mysql

orm

hibernate

sessionfactory