HQL第一次课:
hibernate Query Language:hibernate 查询语言
语法:
query:
String hql="from dept";
Query query=session.createQuery(hql);//返回list集合
query是一个list集合
hql语句下次笔记详解,本次制作简单操作!
1 public static List<Dept> getDept(){ 2 List<Dept> list=new ArrayList<Dept>(); 3 Configuration conf=null; 4 SessionFactory factory=null; 5 Session session=null; 6 7 try { 8 9 conf=new Configuration().configure(); 10 //创建sessionfactory 11 factory=conf.buildSessionFactory(); 12 //打开会话 13 session=factory.openSession(); 14 //hql 15 String hql="select dept from Dept as dept where dept.deptname like ‘%发%‘"; 16 Query query=session.createQuery(hql); 17 // list=query.list(); 18 // for(Dept dep:list){ 19 // System.out.println(dep); 20 // 21 // } 22 System.out.println("迭代器"); 23 Iterator<Dept> ite=query.iterate(); 24 while(ite.hasNext()){ 25 System.out.println(ite.next()); 26 27 } 28 29 30 } catch (Exception e) { 31 e.printStackTrace(); 32 33 }finally{ 34 if(session!=null){ 35 session.close(); 36 37 } 38 } 39 40 41 42 return list; 43 44 }
时间: 2024-10-06 21:39:43