SSH框架实现用户注册的小项目

package com.ssh.test; import java.util.List; import org.hibernate.Query; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; import com.ssh.entity.User; public class TestSelect { public static void main(String[] args) { Configuration configuration = new Configuration().configure(); SessionFactory sessionFactory = configuration.buildSessionFactory(); Session session = sessionFactory.openSession(); session.beginTransaction(); //利用StringBulider 来连接查询语句 StringBuilder hq = new StringBuilder(); //从User里面查找 //注意form后和 where前各有一个空格,:name表示参数 hq.append("from ").append(User.class.getName()).append(" where user_username=:name"); //利用session 建立query Query query = session.createQuery(hq.toString()); query.setString("name", "admin"); //序列化 query的结果为一个list集合 List<User> users = query.list(); if(users != null){ System.out.println("用户存在"); } for (User user : users){ System.out.println(user.getUsername()); } session.getTransaction().commit(); session.close(); sessionFactory.close(); } }