SSH框架实现的用户登录系统，包括对数据库的增删改查

package dao.impl; import java.util.List; import org.springframework.orm.hibernate3.support.HibernateDaoSupport; import dao.IDao; import entity.Users; public class DaoImpl extends HibernateDaoSupport implements IDao { public Users get(Integer id) { // TODO Auto-generated method stub return (Users)getHibernateTemplate().get(Users.class , id); } public void save(Users user) { // TODO Auto-generated method stub getHibernateTemplate().save(user); } public void update(Users user) { // TODO Auto-generated method stub getHibernateTemplate().saveOrUpdate(user); } public void delete(Integer id) { // TODO Auto-generated method stub getHibernateTemplate().delete(getHibernateTemplate().get(Users.class,id)); } public void delete(Users user) { // TODO Auto-generated method stub getHibernateTemplate().delete(user); } public List<Users> findAll() { // TODO Auto-generated method stub return getHibernateTemplate().find("from Users"); } public Users findUserByNameAndPass(String username, String password) { // TODO Auto-generated method stub String[] args = {username , password}; List ul = getHibernateTemplate().find("from Users au where au.username = ? and au.password = ?" , args); if (ul.size() >= 1) { return (Users)ul.get(0); } return null; } }