hibernate执行原生sql_hibernate的find方法如果查询返回多个值用list()方法[java] viewplaincopyprint?public void testQuery(){ Configuration config = new Configuration().configure(); SessionFactory factory =
大家好,又见面了,我是你们的朋友全栈君。如果您正在找激活码,请点击查看最新教程,关注关注公众号 “全栈程序员社区” 获取激活教程,可能之前旧版本教程已经失效.最新Idea2022.1教程亲测有效,一键激活。
Jetbrains全系列IDE使用 1年只要46元 售后保障 童叟无欺
如果查询返回多个值用list()方法
- public void testQuery(){
- Configuration config = new Configuration().configure();
- SessionFactory factory = config.buildSessionFactory();
- Session session = factory.openSession();
- session.beginTransaction();
-
- Query query = session.createQuery(“from Student”);
- List list = query.list();
-
- for(int i=0;i<list.size();i++){
- Student student = (Student)list.get(i);
- System.out.print(student.getId()+” “);
- System.out.print(student.getName()+” “);
- System.out.print(student.getSex()+” “);
- System.out.print(student.getBirthday());
- System.out.println();
- }
-
- session.getTransaction().commit();
- session.close();
- }
- public void testQuery(){
- Configuration config = new Configuration().configure();
- SessionFactory factory = config.buildSessionFactory();
- Session session = factory.openSession();
- session.beginTransaction();
-
- Query query = session.createQuery(“from Student”);
- List list = query.list();
-
- for(int i=0;i<list.size();i++){
- Student student = (Student)list.get(i);
- System.out.print(student.getId()+” “);
- System.out.print(student.getName()+” “);
- System.out.print(student.getSex()+” “);
- System.out.print(student.getBirthday());
- System.out.println();
- }
-
- session.getTransaction().commit();
- session.close();
- }
当确定返回的实例只有一个或者null时 用uniqueResult()方法
- public void testGet(){
- Configuration config = new Configuration().configure();
- SessionFactory factory = config.buildSessionFactory();
- Session session = factory.openSession();
- session.beginTransaction();
-
- Query query = session.createQuery(“from Student s where s.id=?”);
- query.setString(0, “2”);
- Student student = (Student)query.uniqueResult();
-
-
- System.out.println(student.getName());
- System.out.println(student.getBirthday());
-
-
- session.getTransaction().commit();
- session.close();
- }
版权声明:本文内容由互联网用户自发贡献,该文观点仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 举报,一经查实,本站将立刻删除。
发布者:全栈程序员-用户IM,转载请注明出处:https://javaforall.cn/197796.html原文链接:https://javaforall.cn
【正版授权,激活自己账号】: Jetbrains全家桶Ide使用,1年售后保障,每天仅需1毛
【官方授权 正版激活】: 官方授权 正版激活 支持Jetbrains家族下所有IDE 使用个人JB账号...