userservice.java

有简单的网上书店需求及设计流程

package org.wiely.service;

import org.wiely.vo.User;
/**
 * provide  user services
 */

public interface UserService {
	/**
	 * @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;
}