概述
1 @Test 2 public void testQuChong(){ 3 4 SessionFactory sessionFactory = getSessionFactory(); 5 Session session = sessionFactory.openSession(); 6 Transaction transaction = session.beginTransaction(); 7 8 String hql = " select e.price from TYhOrder1Entity e where 1 = 1 and e.id < 500"; 9 Query<TYhOrder1Entity> query = session.createQuery(hql); 10 List<TYhOrder1Entity> list = query.list(); 11 //Java去重前先看看条数 12 System.out.println(list.size()); 13 list = new ArrayList(new HashSet<>(list));//HashSet()无序不可重复 ArrayList() 有序可重复 14 //再输出一下去重后的条数 15 System.out.println(list.size()); 16 }
本文来自博客园,作者:荣慕平,转载请注明原文链接:https://www.cnblogs.com/rongmuping/articles/16127856.html