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RSS订阅原创 JavaScript 作用域(scope)和作用链(scope chain)
JavaScript 作用域(scope)和作用链(scope chain)
2022-10-21 15:36:29
298
原创 实现CRUD
DAO接口 public interface UserDao { public User findById(int id); public boolean add(User user); public boolean update(User user); public boolean delete(int user); } DAO实现类 package DAO; import core.HibernateUtil; import entity.User; impo.
2021-06-18 19:38:23
128
原创 HQL，分页查询
查询 Query query = session.createQuery("from User"); 分页设置 query.setFirstResult(0); query.setMaxResults(10); 全部代码 public void fourth() { SessionFactory sessionFactory = HibernateUtil.getSessionFactory(); Session session = sessionFactory.openSe.
2021-06-18 19:19:12
453
原创 equels和hashCode重写方法
方法一 IDEA 生成 @Override public boolean equals(Object o) { if (this == o) return true; if (o == null || getClass() != o.getClass()) return false; User user = (User) o; return Objects.equals(id, user.id) && Objects.equals(name, user.n.
2021-05-26 17:07:30
153
原创 HibernateHomework2
使用单例模式创建SessionFactory public class HibernateUtil { private static class SessionFactoryHolder{ private static SessionFactory SessionFactoryInstance; private static StandardServiceRegistry registry; static { registry
2021-05-26 16:57:56
85
原创 hibernate初次尝试
1.配置hibernate.cfg.xml <?xml version="1.0" encoding="utf-8"?> <!DOCTYPE hibernate-configuration SYSTEM "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> <hibernate-configuration> <session-factory> <prop
2021-05-07 17:54:22
151
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