Hibernate HQL查询

 

package cn.sasa.test;

import org.hibernate.Session;
import org.hibernate.Transaction;

import cn.sasa.domain.account;
import cn.sasa.utils.HibernateUtils;

public class TestHQL {
    @org.junit.Test
    public void test() {
        Session session = HibernateUtils.getCurrentSession();
        Transaction tran = session.beginTransaction();
        
        String hql = "from account";//查询所有记录
        var query = session.createQuery(hql);
        var list = query.list();//返回多个记录
        //var list = query.uniqueResult();//返回一条记录
        System.out.println(list);
        
        String hql1 = "from account where id=:id";//查找一条记录
        var query1 = session.createQuery(hql1);
        query1.setParameter("id", 1);
        var acObj = (account)query1.uniqueResult();
        System.out.println(acObj);
        
        String hql2 = "from account where id=?0";//查找一条记录
        var query2 = session.createQuery(hql2);
        query2.setParameter(0, 1);
        var acObj2 = (account)query2.uniqueResult();
        System.out.println(acObj2);
        
        //分页
        String hql3 = "from account ";
        var query3 = session.createQuery(hql3);
        //limit ?,?
        query3.setFirstResult(0);
        query3.setMaxResults(3);
        var list3 = query3.list();
        System.out.println(list3);
        
        
        tran.commit();
        session.close();
    }
    
    
}