usermanagement.java

在学习完JAVA基础后,做的一个小小的项目.一个简单的聊天程序.呵呵,看看吧,那时候才刚刚接触到DAO,哎,惊叹的是设计思想. 呵呵,如果你也刚刚学完JAVA基础,有对SWING,AWT比较喜欢的话

package server.business;

import java.util.*;
import server.model.*;
import server.dao.*;
import server.business.filter.*;
import server.exception.LoginException;
public class UserManagement {
	//注册，返回成功或者失败信息
	public String register(String userName,String password1,String password2,String name,String classNumber,String email,String phone){
		//准备过滤器，验证
		FilterFactory factory=FilterFactory.newInstance();
		Filter header=factory.getFilter();
		String result=header.doFilter(userName,password1,password2,name,classNumber,email,phone);
		if (result.equals("success")){
			//注册
			UserDAOFactory df=UserDAOFactory.newInstance();
			UserDAO dao=df.getUserDAO();
			
			User u=new User(userName,password1,name,classNumber,email,phone);
			
			boolean flag=dao.saveUser(u);
			if (flag){
				return "注册成功！";
			}
			else{
				return "不明原因的注册失败！";
			}
		}
		else return result;
		
	}
	//用户登录，正常情况返回本班学生列表，登录失败则会抛出LoginException
	public List<User> login(String userName,String password) throws LoginException{
		//通过工厂，拿到DAO对象
		UserDAOFactory factory=UserDAOFactory.newInstance();
		UserDAO dao=factory.getUserDAO();
		
		Map<String,User> users=dao.getAllUsers();
		//登录验证
		if (!users.containsKey(userName)){
			throw new LoginException("用户名不存在!");
		}
		if (!password.equals(users.get(userName).getPassword())){
			throw new LoginException("密码错误!");
		}
		//登录成功，获取用户列表
		String classNumber=users.get(userName).getClassNumber();
		List<User> result=dao.getAllUsersByClassNumber(classNumber);
		return result;
		
	}
}