diff --git a/.prettierrc b/.prettierrc
new file mode 100644
index 0000000..a155601
--- /dev/null
+++ b/.prettierrc
@@ -0,0 +1,11 @@
+{
+  "printWidth": 80,
+  "tabWidth": 2,
+  "useTabs": false,
+  "semi": true,
+  "singleQuote": false,
+  "trailingComma": "none",
+  "bracketSpacing": true,
+  "arrowParens": "always",
+  "endOfLine": "auto"
+}
diff --git a/src/main/java/com/badminton/entity/Match.java b/src/main/java/com/badminton/entity/Match.java
new file mode 100644
index 0000000..d9aa620
--- /dev/null
+++ b/src/main/java/com/badminton/entity/Match.java
@@ -0,0 +1,121 @@
+package com.badminton.entity;
+
+import java.util.Date;
+
+/**
+ * 赛事实体类
+ * 对应需求：FR-02 赛事创建与配置
+ */
+public class Match {
+    private String matchId;
+    private String matchName;
+    private String matchType; // 单打/双打/混合双打
+    private Date startTime;
+    private Date endTime;
+    private String location;
+    private String registrationCondition;
+    private int maxParticipants;
+    private String status; // 未开始/报名中/进行中/已结束
+
+    public Match() {}
+
+    public Match(String matchId, String matchName, String matchType, Date startTime,
+                 Date endTime, String location, String registrationCondition,
+                 int maxParticipants, String status) {
+        this.matchId = matchId;
+        this.matchName = matchName;
+        this.matchType = matchType;
+        this.startTime = startTime;
+        this.endTime = endTime;
+        this.location = location;
+        this.registrationCondition = registrationCondition;
+        this.maxParticipants = maxParticipants;
+        this.status = status;
+    }
+
+    // Getter和Setter方法（自动生成：右键→Source Action→Generate Getters and Setters）
+    public String getMatchId() {
+        return matchId;
+    }
+
+    public void setMatchId(String matchId) {
+        this.matchId = matchId;
+    }
+
+    public String getMatchName() {
+        return matchName;
+    }
+
+    public void setMatchName(String matchName) {
+        this.matchName = matchName;
+    }
+
+    public String getMatchType() {
+        return matchType;
+    }
+
+    public void setMatchType(String matchType) {
+        this.matchType = matchType;
+    }
+
+    public Date getStartTime() {
+        return startTime;
+    }
+
+    public void setStartTime(Date startTime) {
+        this.startTime = startTime;
+    }
+
+    public Date getEndTime() {
+        return endTime;
+    }
+
+    public void setEndTime(Date endTime) {
+        this.endTime = endTime;
+    }
+
+    public String getLocation() {
+        return location;
+    }
+
+    public void setLocation(String location) {
+        this.location = location;
+    }
+
+    public String getRegistrationCondition() {
+        return registrationCondition;
+    }
+
+    public void setRegistrationCondition(String registrationCondition) {
+        this.registrationCondition = registrationCondition;
+    }
+
+    public int getMaxParticipants() {
+        return maxParticipants;
+    }
+
+    public void setMaxParticipants(int maxParticipants) {
+        this.maxParticipants = maxParticipants;
+    }
+
+    public String getStatus() {
+        return status;
+    }
+
+    public void setStatus(String status) {
+        this.status = status;
+    }
+
+    @Override
+    public String toString() {
+        return "Match{"
+            + "matchId='" + matchId + '\''
+            + ", matchName='" + matchName + '\''
+            + ", matchType='" + matchType + '\''
+            + ", startTime=" + startTime
+            + ", endTime=" + endTime
+            + ", location='" + location + '\''
+            + ", status='" + status + '\''
+            + '}';
+    }
+}
diff --git a/src/main/java/com/badminton/entity/Notification.java b/src/main/java/com/badminton/entity/Notification.java
new file mode 100644
index 0000000..8372af8
--- /dev/null
+++ b/src/main/java/com/badminton/entity/Notification.java
@@ -0,0 +1,97 @@
+package com.badminton.entity;
+
+import java.util.Date;
+
+/**
+ * 通知实体类
+ * 对应需求：FR-07 赛事通知管理
+ */
+public class Notification {
+    private String notificationId;
+    private String senderId;
+    private String receiverId;
+    private String title;
+    private String content;
+    private Date sendTime;
+    private String status; // 未读/已读
+
+    public Notification() {}
+
+    public Notification(String notificationId, String senderId, String receiverId,
+                        String title, String content, Date sendTime, String status) {
+        this.notificationId = notificationId;
+        this.senderId = senderId;
+        this.receiverId = receiverId;
+        this.title = title;
+        this.content = content;
+        this.sendTime = sendTime;
+        this.status = status;
+    }
+
+    // Getter和Setter方法
+    public String getNotificationId() {
+        return notificationId;
+    }
+
+    public void setNotificationId(String notificationId) {
+        this.notificationId = notificationId;
+    }
+
+    public String getSenderId() {
+        return senderId;
+    }
+
+    public void setSenderId(String senderId) {
+        this.senderId = senderId;
+    }
+
+    public String getReceiverId() {
+        return receiverId;
+    }
+
+    public void setReceiverId(String receiverId) {
+        this.receiverId = receiverId;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public void setContent(String content) {
+        this.content = content;
+    }
+
+    public Date getSendTime() {
+        return sendTime;
+    }
+
+    public void setSendTime(Date sendTime) {
+        this.sendTime = sendTime;
+    }
+
+    public String getStatus() {
+        return status;
+    }
+
+    public void setStatus(String status) {
+        this.status = status;
+    }
+
+    @Override
+    public String toString() {
+        return "Notification{"
+            + "notificationId='" + notificationId + '\''
+            + ", title='" + title + '\''
+            + ", sendTime=" + sendTime
+            + ", status='" + status + '\''
+            + '}';
+    }
+}
diff --git a/src/main/java/com/badminton/entity/Registration.java b/src/main/java/com/badminton/entity/Registration.java
new file mode 100644
index 0000000..3ad12d3
--- /dev/null
+++ b/src/main/java/com/badminton/entity/Registration.java
@@ -0,0 +1,78 @@
+package com.badminton.entity;
+
+import java.util.Date;
+
+/**
+ * 报名实体类
+ * 对应需求：FR-03 赛事报名管理
+ */
+public class Registration {
+    private String registrationId;
+    private String userId;
+    private String matchId;
+    private Date registrationTime;
+    private String status; // 待审核/已通过/已拒绝
+
+    public Registration() {}
+
+    public Registration(String registrationId, String userId, String matchId,
+                        Date registrationTime, String status) {
+        this.registrationId = registrationId;
+        this.userId = userId;
+        this.matchId = matchId;
+        this.registrationTime = registrationTime;
+        this.status = status;
+    }
+
+    // Getter和Setter方法
+    public String getRegistrationId() {
+        return registrationId;
+    }
+
+    public void setRegistrationId(String registrationId) {
+        this.registrationId = registrationId;
+    }
+
+    public String getUserId() {
+        return userId;
+    }
+
+    public void setUserId(String userId) {
+        this.userId = userId;
+    }
+
+    public String getMatchId() {
+        return matchId;
+    }
+
+    public void setMatchId(String matchId) {
+        this.matchId = matchId;
+    }
+
+    public Date getRegistrationTime() {
+        return registrationTime;
+    }
+
+    public void setRegistrationTime(Date registrationTime) {
+        this.registrationTime = registrationTime;
+    }
+
+    public String getStatus() {
+        return status;
+    }
+
+    public void setStatus(String status) {
+        this.status = status;
+    }
+
+    @Override
+    public String toString() {
+        return "Registration{"
+            + "registrationId='" + registrationId + '\''
+            + ", userId='" + userId + '\''
+            + ", matchId='" + matchId + '\''
+            + ", registrationTime=" + registrationTime
+            + ", status='" + status + '\''
+            + '}';
+    }
+}
diff --git a/src/main/java/com/badminton/entity/Schedule.java b/src/main/java/com/badminton/entity/Schedule.java
new file mode 100644
index 0000000..496d6c8
--- /dev/null
+++ b/src/main/java/com/badminton/entity/Schedule.java
@@ -0,0 +1,108 @@
+package com.badminton.entity;
+
+import java.util.Date;
+
+/**
+ * 赛程实体类
+ * 对应需求：FR-04 赛程与场地安排
+ */
+public class Schedule {
+    private String scheduleId;
+    private String matchId;
+    private String round; // 轮次：小组赛/1/8决赛/1/4决赛/半决赛/决赛
+    private String player1Id;
+    private String player2Id;
+    private Date matchTime;
+    private String court; // 场地号
+    private String refereeId;
+
+    public Schedule() {}
+
+    public Schedule(String scheduleId, String matchId, String round, String player1Id,
+                    String player2Id, Date matchTime, String court, String refereeId) {
+        this.scheduleId = scheduleId;
+        this.matchId = matchId;
+        this.round = round;
+        this.player1Id = player1Id;
+        this.player2Id = player2Id;
+        this.matchTime = matchTime;
+        this.court = court;
+        this.refereeId = refereeId;
+    }
+
+    // Getter和Setter方法
+    public String getScheduleId() {
+        return scheduleId;
+    }
+
+    public void setScheduleId(String scheduleId) {
+        this.scheduleId = scheduleId;
+    }
+
+    public String getMatchId() {
+        return matchId;
+    }
+
+    public void setMatchId(String matchId) {
+        this.matchId = matchId;
+    }
+
+    public String getRound() {
+        return round;
+    }
+
+    public void setRound(String round) {
+        this.round = round;
+    }
+
+    public String getPlayer1Id() {
+        return player1Id;
+    }
+
+    public void setPlayer1Id(String player1Id) {
+        this.player1Id = player1Id;
+    }
+
+    public String getPlayer2Id() {
+        return player2Id;
+    }
+
+    public void setPlayer2Id(String player2Id) {
+        this.player2Id = player2Id;
+    }
+
+    public Date getMatchTime() {
+        return matchTime;
+    }
+
+    public void setMatchTime(Date matchTime) {
+        this.matchTime = matchTime;
+    }
+
+    public String getCourt() {
+        return court;
+    }
+
+    public void setCourt(String court) {
+        this.court = court;
+    }
+
+    public String getRefereeId() {
+        return refereeId;
+    }
+
+    public void setRefereeId(String refereeId) {
+        this.refereeId = refereeId;
+    }
+
+    @Override
+    public String toString() {
+        return "Schedule{"
+            + "scheduleId='" + scheduleId + '\''
+            + ", matchId='" + matchId + '\''
+            + ", round='" + round + '\''
+            + ", matchTime=" + matchTime
+            + ", court='" + court + '\''
+            + '}';
+    }
+}
diff --git a/src/main/java/com/badminton/entity/Score.java b/src/main/java/com/badminton/entity/Score.java
new file mode 100644
index 0000000..894c12f
--- /dev/null
+++ b/src/main/java/com/badminton/entity/Score.java
@@ -0,0 +1,87 @@
+package com.badminton.entity;
+
+/**
+ * 成绩实体类
+ * 对应需求：FR-05 比赛成绩录入与管理
+ */
+public class Score {
+    private String scoreId;
+    private String scheduleId;
+    private int player1Score;
+    private int player2Score;
+    private String winnerId;
+    private String status; // 未开始/进行中/已结束
+
+    public Score() {}
+
+    public Score(String scoreId, String scheduleId, int player1Score,
+                 int player2Score, String winnerId, String status) {
+        this.scoreId = scoreId;
+        this.scheduleId = scheduleId;
+        this.player1Score = player1Score;
+        this.player2Score = player2Score;
+        this.winnerId = winnerId;
+        this.status = status;
+    }
+
+    // Getter和Setter方法
+    public String getScoreId() {
+        return scoreId;
+    }
+
+    public void setScoreId(String scoreId) {
+        this.scoreId = scoreId;
+    }
+
+    public String getScheduleId() {
+        return scheduleId;
+    }
+
+    public void setScheduleId(String scheduleId) {
+        this.scheduleId = scheduleId;
+    }
+
+    public int getPlayer1Score() {
+        return player1Score;
+    }
+
+    public void setPlayer1Score(int player1Score) {
+        this.player1Score = player1Score;
+    }
+
+    public int getPlayer2Score() {
+        return player2Score;
+    }
+
+    public void setPlayer2Score(int player2Score) {
+        this.player2Score = player2Score;
+    }
+
+    public String getWinnerId() {
+        return winnerId;
+    }
+
+    public void setWinnerId(String winnerId) {
+        this.winnerId = winnerId;
+    }
+
+    public String getStatus() {
+        return status;
+    }
+
+    public void setStatus(String status) {
+        this.status = status;
+    }
+
+    @Override
+    public String toString() {
+        return "Score{"
+            + "scoreId='" + scoreId + '\''
+            + ", scheduleId='" + scheduleId + '\''
+            + ", player1Score=" + player1Score
+            + ", player2Score=" + player2Score
+            + ", winnerId='" + winnerId + '\''
+            + ", status='" + status + '\''
+            + '}';
+    }
+}
diff --git a/src/main/java/com/badminton/entity/User.java b/src/main/java/com/badminton/entity/User.java
new file mode 100644
index 0000000..eb4a68d
--- /dev/null
+++ b/src/main/java/com/badminton/entity/User.java
@@ -0,0 +1,86 @@
+package com.badminton.entity;
+
+/**
+ * 用户实体类
+ * 支持选手、管理员、裁判三种角色
+ * 对应需求：FR-01 用户注册与登录
+ */
+public class User {
+    private String userId;
+    private String username;
+    private String password;
+    private String realName;
+    private String phone;
+    private String role; // player/admin/referee
+
+    public User() {}
+
+    public User(String userId, String username, String password, 
+                String realName, String phone, String role) {
+        this.userId = userId;
+        this.username = username;
+        this.password = password;
+        this.realName = realName;
+        this.phone = phone;
+        this.role = role;
+    }
+
+    public String getUserId() {
+        return userId;
+    }
+
+    public void setUserId(String userId) {
+        this.userId = userId;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public String getRealName() {
+        return realName;
+    }
+
+    public void setRealName(String realName) {
+        this.realName = realName;
+    }
+
+    public String getPhone() {
+        return phone;
+    }
+
+    public void setPhone(String phone) {
+        this.phone = phone;
+    }
+
+    public String getRole() {
+        return role;
+    }
+
+    public void setRole(String role) {
+        this.role = role;
+    }
+
+    @Override
+    public String toString() {
+        return "User{"
+            + "userId='" + userId + '\''
+            + ", username='" + username + '\''
+            + ", realName='" + realName + '\''
+            + ", phone='" + phone + '\''
+            + ", role='" + role + '\''
+            + '}';
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/com/badminton/service/UserService.java b/src/main/java/com/badminton/service/UserService.java
new file mode 100644
index 0000000..e73f354
--- /dev/null
+++ b/src/main/java/com/badminton/service/UserService.java
@@ -0,0 +1,47 @@
+package com.badminton.service;
+
+import com.badminton.entity.User;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * 用户服务类
+ * 实现用户登录功能
+ * 对应需求：FR-01 用户注册与登录
+ */
+public class UserService {
+    private Map<String, User> userDatabase = new HashMap<>();
+
+    public UserService() {
+        // 初始化测试用户
+        userDatabase.put("admin", new User("U001", "admin", "123456", "系统管理员", "13800138000", "admin"));
+        userDatabase.put("referee1", new User("U002", "referee1", "123456", "张裁判", "13800138001", "referee"));
+        userDatabase.put("player1", new User("U003", "player1", "123456", "李选手", "13800138002", "player"));
+    }
+
+    public User login(String username, String password) {
+        if (!userDatabase.containsKey(username)) {
+            System.out.println("登录失败：用户名不存在");
+            return null;
+        }
+
+        User user = userDatabase.get(username);
+
+        if (!user.getPassword().equals(password)) {
+            System.out.println("登录失败：密码错误");
+            return null;
+        }
+
+        System.out.println("登录成功！欢迎您，" + user.getRealName() + "(" + user.getRole() + ")");
+        return user;
+    }
+
+    public static void main(String[] args) {
+        UserService userService = new UserService();
+        
+        // 测试用例
+        userService.login("admin", "123456");
+        userService.login("player1", "123456");
+        userService.login("admin", "wrongpassword");
+    }
+}