userdao.java

ajax博客系统,该文件内容部分综合网上的资源,自己进行了改进,转载请注明 汪建伟

package cn.hxex.blog.dao.hibernate;

import cn.hxex.blog.dao.IUserDAO;
import cn.hxex.blog.exception.BlogDAOException;
import cn.hxex.blog.hibernate.HibernateDAO;
import cn.hxex.blog.model.User;

public class UserDAO extends HibernateDAO implements IUserDAO {

	public User getUser(String username) {
		User user = (User) super.getObject("from User u where u.name = '" + username + "'");
		return user;
	}

	public User getUserById(String id) {
		User user = (User) super.getObject(User.class, id);
		return user;
	}

	public void saveUser(User user) {
		if(user == null)
		{
			return;
		}
		User u = this.getUser(user.getName());
		if(u != null){
			throw new BlogDAOException("该用户名已经存在，请使用其它用户名！");
		}
		super.saveObject(user);
	}

}