diff --git a/src/game21/Card.java b/src/game21/Card.java
index fa1c1a6..6563b6b 100644
--- a/src/game21/Card.java
+++ b/src/game21/Card.java
@@ -1,24 +1,66 @@
 package game21;
 
+import java.util.Random;
+
+//abstract
 public class Card {
-	private Integer id;
-	private String suit;
-	private String number;
-	
-	public void setCard(Integer id, String number, String suit) {
-		this.number = number;
-		this.id = id;
-		this.suit = suit;
+	private int cardId;
+	private String cardSuit;
+	private String cardNum;
+
+	// 随机生成cardId放到获取方法中，节省新建对象数目
+	public int getCardId() {
+		this.cardId = new Random().nextInt(52);
+		return cardId;
 	}
-	public Integer getId() {
-		return id;
+
+	// 按照一定的方法将ID转换成卡牌信息
+	public String getCard(int cardId) {
+		String card = getCardSuit(cardId) + getCardNum(cardId);
+		return card;
 	}
-	public String getSuit() {
-		return suit;
+
+	public String getCardSuit(int cardId) {
+		// cardSuit = Integer.toString((cardId / 13 + 1))
+		switch ((cardId / 13 + 1)) {
+		case 1:
+			cardSuit = "黑桃";
+			break;
+		case 2:
+			cardSuit = "红桃";
+			break;
+		case 3:
+			cardSuit = "梅花";
+			break;
+		case 4:
+			cardSuit = "方块";
+			break;
+		default:
+			break;
+		}
+		return cardSuit;
 	}
-	public String getNumber() {
-		return number;
+
+	public String getCardNum(int cardId) {
+		// cardNum = Integer.toString((cardId % 13 + 1))
+		switch (cardId % 13 + 1) {
+		case 1:
+			cardNum = "A";
+			break;
+		case 11:
+			cardNum = "J";
+			break;
+		case 12:
+			cardNum = "Q";
+			break;
+		case 13:
+			cardNum = "K";
+			break;
+		default:
+			cardNum = Integer.toString((cardId % 13 + 1));
+			break;
+		}
+		return cardNum;
 	}
-	
-	
+
 }
diff --git a/src/game21/CardInHand.java b/src/game21/CardInHand.java
new file mode 100644
index 0000000..66b87c9
--- /dev/null
+++ b/src/game21/CardInHand.java
@@ -0,0 +1,17 @@
+package game21;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class CardInHand {
+	private List<Integer> cardInHand = new ArrayList<Integer>();
+
+	public List<Integer> getCardInHand() {
+		return cardInHand;
+	}
+
+	public void addCardInHand(int card) {
+		this.cardInHand.add(card);
+	}
+	
+}
diff --git a/src/game21/Checkinput.java b/src/game21/Checkinput.java
new file mode 100644
index 0000000..0216439
--- /dev/null
+++ b/src/game21/Checkinput.java
@@ -0,0 +1,11 @@
+package game21;
+
+public class Checkinput {
+	public boolean chkPassword(String userPassword, String userRptPassword) {
+		if (userPassword.equals(userRptPassword))
+			return true;
+		return false;
+	}
+	
+	//WIP:各种非法输入判断。
+}
diff --git a/src/game21/InputStream.java b/src/game21/InputStream.java
new file mode 100644
index 0000000..99b9803
--- /dev/null
+++ b/src/game21/InputStream.java
@@ -0,0 +1,126 @@
+package game21;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.util.Scanner;
+
+public class InputStream {
+	private Scanner in = new Scanner(System.in);
+
+	public String inputString() {
+		// WIP:输入含有空格后自动忽略。
+		String inputstring = in.next();
+		return inputstring;
+	}
+
+	/**
+	 * overloading inputString()，增加限定输入范围 特性： 当最小值大于最大值时候互换数值保证程序健壮 限定接受的数值范围，保证程序健壮
+	 * 
+	 * @param minLength
+	 *            可接受的取值范围：1-255
+	 * @param maxLength
+	 *            可接受的取值范围：1-255
+	 * @return
+	 * @throws IllegalArgumentException
+	 *             非法范围的参数值
+	 */
+	public String inputString(int minLength, int maxLength) throws IllegalArgumentException {
+		// 检查输入参数的合法性
+		boolean chklegal = minLength <= 0 || maxLength <= 0 || minLength > 255 || maxLength > 255;
+		if (chklegal) {
+			throw new IllegalArgumentException("非法参数范围！取值范围为1-255。");
+		}
+		// ADD:检查长度限定，如果最小值大于最大值，交换值
+		if (minLength > maxLength) {
+			minLength += maxLength;
+			maxLength = minLength - maxLength;
+			minLength = minLength - maxLength;
+		}
+		String tmp;
+		do {
+			tmp = inputString();
+			if (tmp.length() < minLength) {
+				System.out.println("输入长度过短，请输入大于" + minLength + "长度的字符！");
+			} else if (tmp.length() > maxLength) {
+				System.out.println("输入长度过长，请输入小于" + maxLength + "长度的字符！");
+			}
+		} while (tmp.length() < minLength || tmp.length() > maxLength);
+		return tmp;
+	}
+
+	/**
+	 * overloading inputint() 增加输入范围的设置
+	 * 
+	 * @param min
+	 * @param max
+	 * @return
+	 * @throws IllegalArgumentException
+	 *             非法范围的参数值
+	 */
+	public int inputint(int min, int max) throws IllegalArgumentException {
+		// 输入合法性检验
+		boolean illegal = min <= 0 || max <= 0 || min > 255 || max > 255;
+		if (illegal) {
+			throw new IllegalArgumentException("非法参数范围！取值范围为1-255。");
+		}
+		if (min > max) {
+			min = min + max;
+			max = min - max;
+			min = min - max;
+		}
+		int inputint = 0;
+		do {
+			try {
+				inputint = in.nextInt();
+			} catch (Exception e) {
+				System.out.println("请输入整数！");
+			}
+			if (inputint < min) {
+				System.out.println("输入数据超限！请输入大于" + min + "的数值");
+			} else if (inputint > max) {
+				System.out.println("输入数据超限！请输入小于" + max + "的数值");
+			}
+		} while (inputint < min || inputint > max);
+		return inputint;
+	}
+
+	/*
+	 * 登陆数据载入以及验证登陆
+	 */
+	private static final String DATABASE_PATH = "./UserDatabase/";
+
+	static {
+		File temp = new File(DATABASE_PATH);
+		temp.mkdirs();
+	}
+
+	public boolean extUser(String name) {
+		File temp = new File(DATABASE_PATH + name + ".txt");
+		return temp.exists();
+	}
+
+	public boolean chkPassword(String name, String password)
+			throws FileNotFoundException, IOException, ClassNotFoundException {
+		if (!extUser(name)) {
+			System.out.println("用户名不存在或者密码错误！");
+			return false;
+		}
+		User user = readUserInfo(name);
+		if (!user.getUserPassword().equals(password)) {
+			System.out.println("用户名不存在或者密码错误！");
+			return false;
+		}
+		return true;
+	}
+
+	public User readUserInfo(String name) throws FileNotFoundException, IOException, ClassNotFoundException {
+		File temp = new File(DATABASE_PATH + name + ".txt");
+		ObjectInputStream ois = new ObjectInputStream(new FileInputStream(temp));
+		User user = (User) ois.readObject();
+		ois.close();
+		return user;
+	}
+}
diff --git a/src/game21/MainManu.java b/src/game21/MainManu.java
deleted file mode 100644
index 99041c4..0000000
--- a/src/game21/MainManu.java
+++ /dev/null
@@ -1,213 +0,0 @@
-package game21;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Random;
-import java.util.Scanner;
-
-public class MainManu {
-	static Player player = new Player();
-	static Scanner in = new Scanner(System.in);
-
-	public static void addPlayer() {
-		System.out.print("请输入玩家数量（2-4人）:");
-		int playernum = 0;
-		do {
-			try {
-				in = new Scanner(System.in);
-				playernum = in.nextInt();
-			} catch (Exception e) {
-				System.out.println("请输入正整数！");
-			}
-			if (playernum < 2 || playernum > 4) {
-				System.out.println("请输入正确的人数");
-			}
-		} while (playernum < 2 || playernum > 4);
-		List<String> playerId = player.getPlayerId();
-		String tempPlayerId;
-		for (int i = 0; i < playernum; i++) {
-			do {
-				System.out.println("请输入第" + (i + 1) + "个玩家的ID：");
-				in = new Scanner(System.in);
-				tempPlayerId = in.nextLine();
-				if (playerId.contains(tempPlayerId)) {
-					System.out.println("该名玩家已存在，请换一个ID！");
-				} else if (tempPlayerId.isEmpty()) {
-					System.out.println("玩家名不得为空！请输入玩家名！");
-				}
-			} while (playerId.contains(tempPlayerId) || tempPlayerId.isEmpty());
-			player.setNewPlayerId(tempPlayerId);
-			tempPlayerId = null;
-		}
-	}
-
-	public static Card prepareCard() {
-		Random r = new Random();
-		Integer id = r.nextInt(52);
-
-		Card c = new Card();
-		String cardNum = Integer.toString(id % 13 + 1);
-		String cardSuit = Integer.toString(id / 13 + 1);
-		switch (cardNum) {
-		case "1":
-			cardNum = "A";
-			break;
-		case "11":
-			cardNum = "J";
-			break;
-		case "12":
-			cardNum = "Q";
-			break;
-		case "13":
-			cardNum = "K";
-			break;
-		default:
-			break;
-		}
-		switch (cardSuit) {
-		case "1":
-			cardSuit = "黑桃";
-			break;
-		case "2":
-			cardSuit = "红桃";
-			break;
-		case "3":
-			cardSuit = "梅花";
-			break;
-		case "4":
-			cardSuit = "方片";
-			break;
-		default:
-			break;
-		}
-		c.setCard(id, cardNum, cardSuit);
-		return c;
-	}
-
-	public static Card cardInHand() {
-		Card temp = MainManu.prepareCard();
-		List<Card> cardinhand = player.getCardInHand();
-		List<Integer> cardId = new ArrayList<Integer>();
-		for (Card card : cardinhand) {
-			cardId.add(card.getId());
-		}
-		if (cardId.contains(temp.getId())) {
-			MainManu.cardInHand();
-		} else {
-			player.CardInHand.add(temp);
-		}
-		return temp;
-	}
-
-	public static void showCardInHand(List<Card> cardinhand) {
-		// List<Card> cardinhand = player.getCardInHand();
-		int cardSize = cardinhand.size();
-		String[] Cards = new String[cardSize];
-		for (int i = 0; i < cardSize; i++) {
-			Cards[i] = cardinhand.get(i).getSuit() + cardinhand.get(i).getNumber();
-		}
-		for (String cards : Cards) {
-			System.out.println(cards);
-		}
-	}
-
-	public static int numberInHand(List<Card> cardinhand) {
-		int num = 0;
-		int cardnum = 0;
-		for (Card card : cardinhand) {
-			cardnum = card.getId() % 13;
-			switch (cardnum) {
-			case 10:
-			case 11:
-			case 12:
-				cardnum = 9;
-				break;
-			default:
-				break;
-			}
-			num += (cardnum + 1);
-		}
-
-		return num;
-	}
-
-	public static void drawCard(String Player, List<Card> cards, List<List<Card>> eachCardInHand, int i) {
-		System.out.print("玩家" + Player + "的手牌是：");
-		for (Card card : eachCardInHand.get(i)) {
-			System.out.print(card.getSuit() + card.getNumber() + ",");
-		}
-		System.out.println("玩家现在手牌分数为：" + numberInHand(cards) + ";");
-		// MainManu.showCardInHand(eachCardInHand.get(i));
-		while (numberInHand(cards) < 21) {
-			String drawCard;
-			do {
-				System.out.println("是否要再抓一张？[Y/N]");
-				in = new Scanner(System.in);
-				drawCard = in.nextLine();
-				if (!(drawCard.equalsIgnoreCase("Y") || drawCard.equalsIgnoreCase("N")) || drawCard.isEmpty()) {
-					System.out.println("输入有误，请重新输入！");
-				}
-			} while (!(drawCard.equalsIgnoreCase("Y") || drawCard.equalsIgnoreCase("N")) || drawCard.isEmpty());
-			System.out.println(drawCard);
-			if (numberInHand(cards) < 21 && drawCard.equalsIgnoreCase("Y")) {
-				cards.add(cardInHand());
-				eachCardInHand.add(i, cards);
-				drawCard(Player, cards, eachCardInHand, i);
-				break;
-			} else {
-				break;
-			}
-		}
-	}
-
-	public static String compareWinner(List<Integer> winner) {
-		int bigger = 0;
-		int winnerplayer = 0;
-		String win;
-		for (int i = 0; i < winner.size(); i++) {
-			if (winner.get(i) <= 21 && winner.get(i) >= bigger) {
-				if (winner.get(i) == bigger || bigger == 0) {
-					win = "平局！";
-				}
-				bigger = winner.get(i);
-				winnerplayer = (i+1);
-			}
-		}
-		if (winnerplayer != 0) {
-			win = Integer.toString(winnerplayer);
-		} else {
-			win = "平局！";
-		}
-		
-		return win;
-	}
-
-	public static void playgame() {
-		List<String> players = player.getPlayerId();
-		List<List<Card>> eachCardInHand = new ArrayList<List<Card>>();
-		List<Integer> winner = new ArrayList<Integer>();
-		for (int i = 0; i < players.size(); i++) {
-			List<Card> cards = new ArrayList<Card>();
-			String Player = players.get(i);
-			System.out.println("第" + (i + 1) + "位玩家开始游戏！");
-			cards.add(MainManu.cardInHand());
-			eachCardInHand.add(i, cards);
-			cards.add(MainManu.cardInHand());
-			eachCardInHand.add(i, cards);
-			drawCard(Player, cards, eachCardInHand, i);
-			System.out.println("玩家" + Player + "手牌最终分数为：" + numberInHand(cards));
-			winner.add(numberInHand(cards));
-		}
-		System.out.println(compareWinner(winner));
-	}
-
-	public static void main(String[] args) {
-		System.out.println("===================");
-		System.out.println();
-		System.out.println("  欢迎玩21点游戏");
-		System.out.println();
-		System.out.println("===================");
-		MainManu.addPlayer();
-		MainManu.playgame();
-	}
-}
diff --git a/src/game21/MainUI.java b/src/game21/MainUI.java
new file mode 100644
index 0000000..4ef1f4f
--- /dev/null
+++ b/src/game21/MainUI.java
@@ -0,0 +1,14 @@
+package game21;
+
+import java.util.Scanner;
+
+public class MainUI {
+	public static void main(String[] args) {
+		 //声明Scanner为了游戏结束后关闭IO输入。
+		 Scanner in = new Scanner(System.in);
+		
+		
+		 //关闭IO输入
+		 in.close();
+	}
+}
diff --git a/src/game21/OutputStream.java b/src/game21/OutputStream.java
new file mode 100644
index 0000000..1ebeb59
--- /dev/null
+++ b/src/game21/OutputStream.java
@@ -0,0 +1,67 @@
+package game21;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.ObjectOutputStream;
+
+public class OutputStream {
+	// 读取文件
+	private static final String DATABASE_PATH = "./UserDatabase/";
+
+	// 保证用户路径存在
+	static {
+		File temp = new File(DATABASE_PATH);
+		temp.mkdirs();
+	}
+
+	public boolean extUser(String name) {
+		File temp = new File(DATABASE_PATH + name + ".txt");
+		return temp.exists();
+	}
+
+	/**
+	 * 
+	 * @param name
+	 * @param password
+	 * @return
+	 * @throws FileNotFoundException
+	 * @throws IOException
+	 */
+	public boolean newUser(String name, String password) throws FileNotFoundException, IOException {
+		File temp = new File(DATABASE_PATH + name + ".txt");
+		if (extUser(name)) {
+			System.out.println("用户已存在！请换一个ID");
+			return true;
+		}
+		//序列化输出到文件中
+		temp.createNewFile();
+		ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(temp));
+		User user = new User(name, password, 0, 0);
+		oos.writeObject(user);
+		oos.close();
+		System.out.println("新用户已创建！欢迎新用户：" + name);
+		return false;
+	}
+
+	/**
+	 * 
+	 * @param name
+	 * @param password
+	 * @param winTimes
+	 * @param totalGameTimes
+	 * @throws FileNotFoundException
+	 * @throws IOException
+	 */
+	public void logout(String name,String password,int winTimes,int totalGameTimes) throws FileNotFoundException, IOException {
+		File temp = new File(DATABASE_PATH + name + ".txt");
+		temp.createNewFile();
+		ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(temp));
+		User user = new User(name, password, winTimes, totalGameTimes);
+		oos.writeObject(user);
+		oos.close();
+		System.out.println("用户：" + name+"已登出。");
+	}
+	
+}
diff --git a/src/game21/Player.java b/src/game21/Player.java
index 876c47e..c14d324 100644
--- a/src/game21/Player.java
+++ b/src/game21/Player.java
@@ -3,21 +3,27 @@
 import java.util.ArrayList;
 import java.util.List;
 
+/**
+ * 单例化Player，使用单例模式保证此对象在一次执行过程中内唯一
+ * 
+ * @author subtank
+ *
+ */
 public class Player {
-	private List<String> PlayerId = new ArrayList<String>();
-	public List<Card> CardInHand = new ArrayList<Card>();
-	
-	public List<Card> getCardInHand() {
-		return CardInHand;
+	//实例化一个私有的Player对象
+	private static Player instance = new Player();
+	//将构造函数私有化,保证不会实例化
+	private Player() {};
+	//提供唯一的可用对象
+	public static Player getInstance() {
+		return instance;
 	}
 	
-	public List<String> getPlayerId() {
-		return PlayerId;
+	private List<User> players = new ArrayList<User>();
+	public List<User> getPlayersId() {
+		return players;
 	}
-	
-	public void setNewPlayerId(String playerId) {
-		this.PlayerId.add(playerId);
-		//WIP: Add to Database and check 
+	public void addPlayersId(User players) {
+		this.players.add(players);
 	}
-	
 }
diff --git a/src/game21/PlayerCardInHand.java b/src/game21/PlayerCardInHand.java
new file mode 100644
index 0000000..cce7aff
--- /dev/null
+++ b/src/game21/PlayerCardInHand.java
@@ -0,0 +1,30 @@
+package game21;
+
+import java.util.ArrayList;
+import java.util.List;
+/**
+ * 所有玩家手牌集合，使用单例模式保证此对象在一次执行过程中内唯一
+ * 
+ * @param playerCardInHand，一个存放每一个玩家的所有手牌的List
+ * @author subtank
+ *
+ */
+public class PlayerCardInHand {
+	//实例化一个私有的Player对象
+	private static PlayerCardInHand instance = new PlayerCardInHand();
+	//将构造函数私有化,保证不会实例化
+	private PlayerCardInHand() {};
+	//提供唯一的可用对象
+	public static PlayerCardInHand getInstance() {
+		return instance;
+	}
+	
+	private List<CardInHand> playerCardInHand = new ArrayList<CardInHand>();
+	public List<CardInHand> getPlayerCardInHand() {
+		return playerCardInHand;
+	}
+	public void addPlayerCardInHand(CardInHand cardInHand) {
+		//将一个玩家的手牌集合视为一个元素添加到所有玩家手牌集合
+		playerCardInHand.add(cardInHand);
+	}
+}
diff --git a/src/game21/Testmain.java b/src/game21/Testmain.java
new file mode 100644
index 0000000..422cd20
--- /dev/null
+++ b/src/game21/Testmain.java
@@ -0,0 +1,57 @@
+package game21;
+
+public class Testmain {
+	public static void main(String[] args) {
+		// Player playerList = Player.getInstance();
+		// Card temp = new Card();
+		// System.out.println(temp.getCardSuit() + temp.getCardNum());
+		/*
+		 * PlayerCardInHand cardsList = PlayerCardInHand.getInstance();
+		 * 
+		 * Card temp = new Card(); Card temp3 = new Card(); CardInHand temp2 = new
+		 * CardInHand(); temp2.addCardInHand(temp); temp2.addCardInHand(temp3);
+		 * cardsList.addPlayerCardInHand(temp2);
+		 * System.out.println(cardsList.getPlayerCardInHand());
+		 * System.out.println(temp2.getCardInHand());
+		 * System.out.println(temp.getCardNum(temp.getCardId()));
+		 * System.out.println(temp3.getCardNum(temp3.getCardId()));
+		 * System.out.println(temp.getCardId()); System.out.println(temp3.getCardId());
+		 */
+		/*
+		 * User temp = new User(); System.out.println(temp.chkPassword("13", "111"));
+		 */
+		/*
+		 * 测试生成单个玩家手牌以及获取各种信息 Card temp = new Card(); int tmp1 = temp.getCardId(); int
+		 * tmp2 = temp.getCardId(); System.out.println(tmp1 + "-" +
+		 * temp.getCardSuit(tmp1) + temp.getCardNum(tmp1)); System.out.println(tmp2 +
+		 * "-" + temp.getCardSuit(tmp2) + temp.getCardNum(tmp2)); CardInHand test = new
+		 * CardInHand(); test.addCardInHand(tmp1); test.addCardInHand(tmp2);
+		 * List<Integer> test2 = new ArrayList<Integer>(); test2 = test.getCardInHand();
+		 * System.out.println(temp.getCard(test2.get(0)));
+		 */
+
+		//测试非法输入
+//		InputStream temp = new InputStream();
+//		temp.inputString(0, 0);
+//		System.out.println("success!");
+
+		//测试序列化
+//		OutputStream temp = new OutputStream();
+//		try {
+//			temp.newUser("test", "password");
+//		} catch (IOException e) {
+//			e.printStackTrace();
+//		}
+
+//		InputStream test = new InputStream();
+//		User user = null;
+//		try {
+//			user = (User) test.readUserInfo("test");
+//		} catch (ClassNotFoundException | IOException e) {
+//			e.printStackTrace();
+//		}
+//		System.out.println(user.getUserName());
+//		System.out.println(user.getUserPassword());
+//		System.out.println(user.getUserRptPassword());
+	}
+}
diff --git a/src/game21/User.java b/src/game21/User.java
new file mode 100644
index 0000000..443e043
--- /dev/null
+++ b/src/game21/User.java
@@ -0,0 +1,88 @@
+package game21;
+
+public class User implements java.io.Serializable {
+	private static final long serialVersionUID = 6877825214033390995L;
+	private String userName, userPassword;
+	private transient String userRptPassword;
+
+	// ADD:增加功能，记录获胜次数以及游玩次数。
+	private Integer winTimes, totalGameTimes;
+
+	public User(String userName,String userPassword,Integer winTimes,Integer totalGameTimes) {
+		this.userName = userName;
+		this.userPassword = userPassword;
+		this.winTimes = winTimes;
+		this.totalGameTimes = totalGameTimes;
+	}
+	public Integer getWinTimes() {
+		return winTimes;
+	}
+
+	public void setWinTimes(Integer winTimes) {
+		this.winTimes = winTimes;
+	}
+
+	public Integer getTotalGameTimes() {
+		return totalGameTimes;
+	}
+
+	public void setTotalGameTimes(Integer totalGameTimes) {
+		this.totalGameTimes = totalGameTimes;
+	}
+
+	transient InputStream in = new InputStream();
+
+	public void setUserName(String userName) {
+		this.userName = userName;
+	}
+
+	// overloading
+	public void setUserName() {
+		final int MIN_LANGTH = 4;
+		final int MAX_LANGTH = 10;
+		String userName = in.inputString(MIN_LANGTH, MAX_LANGTH);
+		this.userName = userName;
+	}
+
+	public void setUserPassword(String userPassword) {
+		this.userPassword = userPassword;
+	}
+
+	// overloading
+	public void setUserPassword() {
+		final int MIN_LANGTH = 6;
+		final int MAX_LANGTH = 16;
+		String userPassword = in.inputString(MIN_LANGTH, MAX_LANGTH);
+		/*
+		 * MD5加密方法
+		 */
+		this.userPassword = userPassword;
+	}
+
+	public void setUserRptPassword(String userRptPassword) {
+		this.userRptPassword = userRptPassword;
+	}
+
+	// overloading
+	public void setUserRptPassword() {
+		final int MIN_LANGTH = 6;
+		final int MAX_LANGTH = 16;
+		String userRptPassword = in.inputString(MIN_LANGTH, MAX_LANGTH);
+		/*
+		 * MD5加密方法
+		 */
+		this.userRptPassword = userRptPassword;
+	}
+
+	public String getUserName() {
+		return userName;
+	}
+
+	public String getUserPassword() {
+		return userPassword;
+	}
+
+	public String getUserRptPassword() {
+		return userRptPassword;
+	}
+}
diff --git a/src/game21/UserSerializable.java b/src/game21/UserSerializable.java
new file mode 100644
index 0000000..b88ca39
--- /dev/null
+++ b/src/game21/UserSerializable.java
@@ -0,0 +1,51 @@
+package game21;
+
+public class UserSerializable /*extends User*/ implements java.io.Serializable{
+	private static final long serialVersionUID = 4357209040985916893L;
+	private String userName, userPassword;
+	private Integer winTimes, totalGameTimes;
+
+	public UserSerializable(String userName,String userPassword,Integer winTimes,Integer totalGameTimes) {
+		this.userName = userName;
+		this.userPassword = userPassword;
+		this.winTimes = winTimes;
+		this.totalGameTimes = totalGameTimes;
+	}
+
+	public String getUserName() {
+		return userName;
+	}
+
+	public void setUserName(String userName) {
+		this.userName = userName;
+	}
+
+	public String getUserPassword() {
+		return userPassword;
+	}
+
+	public void setUserPassword(String userPassword) {
+		this.userPassword = userPassword;
+	}
+
+	public Integer getWinTimes() {
+		return winTimes;
+	}
+
+	public void setWinTimes(Integer winTimes) {
+		this.winTimes = winTimes;
+	}
+
+	public Integer getTotalGameTimes() {
+		return totalGameTimes;
+	}
+
+	public void setTotalGameTimes(Integer totalGameTimes) {
+		this.totalGameTimes = totalGameTimes;
+	}
+
+	public static long getSerialversionuid() {
+		return serialVersionUID;
+	}
+	
+}