userdao.java

来自「有简单的网上书店需求及设计流程」· Java 代码 · 共 35 行

package org.wiely.dao;

import org.wiely.vo.User;

/**
 * interface:userDAO.provides three methods to access the database 
 * method: checkUser() ,return User; register(), exitsUser,
 */
public interface UserDAO {
	/**
	 * @param User
	 *            user
	 * @return User
	 * @throws Exception
	 */
	public User checkUser(User user) throws Exception;

	/**
	 * 
	 * @param user
	 * @throws Exception
	 */
	public void register(User user) throws Exception;

	/**
	 * 
	 * @param String
	 *            username
	 * @throws Exception
	 */

	public boolean exitsUser(String username) throws Exception;

}