commit bb9e208381fdf7846baa90e082b30cd13bb90cbf
Author: starsac <starsacpublic@163.com>
Date:   Sun Jan 11 15:56:55 2026 +0800

    feat: 添加文档管理系统前后端基础功能
    - 新增后端FastAPI应用，包含用户管理、文档管理和操作日志功能
    - 实现JWT认证机制，支持用户注册、登录、登出操作
    - 添加数据库模型定义，包括用户表、文档表和操作日志表
    - 实现文档的增删改查功能及权限控制
    - 添加管理员功能，支持用户管理和全局操作日志查看
    - 新增前端界面，实现完整的用户交互体验
    - 配置环境变量示例和Git忽略规则
    - 编写详细的README文档，包含安装和使用说明

diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..2833db9
--- /dev/null
+++ b/.env.example
@@ -0,0 +1,10 @@
+# JWT密钥（生产环境请使用强密钥）
+SECRET_KEY=your-super-secret-jwt-key-change-this-in-production
+
+# 数据库配置
+DATABASE_URL=sqlite:///./document_management.db
+
+# 应用配置
+DEBUG=true
+HOST=0.0.0.0
+PORT=8000
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..94986d2
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,84 @@
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+*.manifest
+*.spec
+pip-log.txt
+pip-delete-this-directory.txt
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.log
+.gitattributes
+.pytest_cache/
+.pyup.yml
+isort.cfg
+.docs/
+mypy.ini
+.pyre/
+.pyre_configuration
+
+# Virtual Environment
+venv/
+env/
+ENV/
+env.bak/
+venv.bak/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+.DS_Store
+
+# Database
+*.db
+*.db-journal
+
+# Environment variables
+.env
+.env.local
+.env.dev
+.env.test
+.env.prod
+.env.staging
+
+# Logs
+*.log
+logs/
+
+# OS generated files
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..ecc36c0
--- /dev/null
+++ b/README.md
@@ -0,0 +1,310 @@
+# 文档在线管理系统
+
+一个基于FastAPI的文档在线管理系统后端API，提供用户管理、文档管理和操作日志记录功能。
+
+## 功能特性
+
+### 用户管理模块
+- 用户注册/删除
+- 用户登录/登出
+- 用户信息维护
+- 用户操作记录
+- 会话管理机制
+
+### 文档管理模块
+- 文档创建、查看、更新、删除
+- 文档权限控制（私有/公开）
+- 文档类型和大小管理
+
+### 操作日志模块
+- 完整的用户操作记录
+- 管理员可查看所有操作日志
+- 用户可查看自己的操作日志
+
+## 技术栈
+
+- **后端框架**: FastAPI
+- **数据库**: SQLite (支持其他数据库)
+- **认证**: JWT Token
+- **ORM**: SQLAlchemy
+
+## 安装和运行
+
+### 1. 安装依赖
+
+```bash
+pip install -r requirements.txt
+```
+
+### 2. 配置环境变量
+
+复制环境变量示例文件：
+```bash
+cp .env.example .env
+```
+
+编辑 `.env` 文件，设置你的配置：
+```env
+SECRET_KEY=your-super-secret-jwt-key
+DATABASE_URL=sqlite:///./document_management.db
+DEBUG=true
+HOST=0.0.0.0
+PORT=8000
+```
+
+### 3. 运行应用
+
+```bash
+# 方式1: 使用uvicorn直接运行
+uvicorn main:app --reload --host 0.0.0.0 --port 8000
+
+# 方式2: 使用python运行
+python main.py
+```
+
+### 4. 访问API文档
+
+应用启动后，可以访问以下地址查看API文档：
+- Swagger UI: http://localhost:8000/docs
+- ReDoc: http://localhost:8000/redoc
+
+## API接口说明
+
+### 认证接口
+
+#### 用户注册
+```http
+POST /auth/register
+Content-Type: application/json
+
+{
+  "username": "testuser",
+  "email": "test@example.com",
+  "password": "password123",
+  "full_name": "测试用户"
+}
+```
+
+#### 用户登录
+```http
+POST /auth/login
+Content-Type: application/json
+
+{
+  "username": "testuser",
+  "password": "password123"
+}
+```
+
+#### 用户登出
+```http
+POST /auth/logout
+Authorization: Bearer <token>
+```
+
+### 用户管理接口
+
+#### 获取当前用户信息
+```http
+GET /users/me
+Authorization: Bearer <token>
+```
+
+#### 更新用户信息
+```http
+PUT /users/me
+Authorization: Bearer <token>
+Content-Type: application/json
+
+{
+  "email": "newemail@example.com",
+  "full_name": "新姓名"
+}
+```
+
+#### 获取所有用户（仅管理员）
+```http
+GET /users?skip=0&limit=100
+Authorization: Bearer <token>
+```
+
+#### 删除用户（仅管理员）
+```http
+DELETE /users/{user_id}
+Authorization: Bearer <token>
+```
+
+### 文档管理接口
+
+#### 创建文档
+```http
+POST /documents
+Authorization: Bearer <token>
+Content-Type: application/json
+
+{
+  "title": "我的文档",
+  "content": "文档内容",
+  "description": "文档描述",
+  "file_type": "txt",
+  "is_public": false
+}
+```
+
+#### 获取文档列表
+```http
+GET /documents?skip=0&limit=100
+Authorization: Bearer <token>
+```
+
+#### 获取文档详情
+```http
+GET /documents/{document_id}
+Authorization: Bearer <token>
+```
+
+#### 更新文档
+```http
+PUT /documents/{document_id}
+Authorization: Bearer <token>
+Content-Type: application/json
+
+{
+  "title": "更新后的标题",
+  "content": "更新后的内容"
+}
+```
+
+#### 删除文档
+```http
+DELETE /documents/{document_id}
+Authorization: Bearer <token>
+```
+
+### 操作日志接口
+
+#### 获取我的操作日志
+```http
+GET /logs/my?skip=0&limit=100
+Authorization: Bearer <token>
+```
+
+#### 获取所有操作日志（仅管理员）
+```http
+GET /logs?skip=0&limit=100
+Authorization: Bearer <token>
+```
+
+## 数据库结构
+
+### Users表（用户表）
+- id: 主键
+- username: 用户名（唯一）
+- email: 邮箱（唯一）
+- hashed_password: 加密密码
+- full_name: 全名
+- is_admin: 是否管理员
+- is_active: 是否激活
+- created_at: 创建时间
+- updated_at: 更新时间
+
+### Documents表（文档表）
+- id: 主键
+- title: 文档标题
+- content: 文档内容
+- description: 文档描述
+- file_type: 文件类型
+- file_size: 文件大小
+- is_public: 是否公开
+- owner_id: 所有者ID（外键）
+- created_at: 创建时间
+- updated_at: 更新时间
+
+### UserOperationLogs表（用户操作日志表）
+- id: 主键
+- user_id: 用户ID（外键）
+- operation: 操作类型
+- details: 操作详情
+- ip_address: IP地址
+- user_agent: 用户代理
+- created_at: 创建时间
+
+## 安全特性
+
+1. **JWT认证**: 基于Token的认证机制
+2. **权限控制**: 用户只能访问自己的数据
+3. **输入验证**: 使用Pydantic进行数据验证
+4. **CORS支持**: 支持跨域请求
+
+### ⚠️ 重要安全说明
+
+**简化认证模式**: 当前系统使用简化认证模式，密码以明文形式存储。
+- **仅适用于开发环境**: 此模式仅用于开发和测试目的
+- **生产环境警告**: 在生产环境中，强烈建议使用bcrypt等安全加密算法
+- **安全升级**: 如需升级到生产环境，请参考扩展功能建议中的安全升级部分
+
+## 部署说明
+
+### 本地部署
+```bash
+# 1. 克隆项目
+git clone <repository-url>
+cd web_security
+
+# 2. 创建虚拟环境
+python -m venv .venv
+
+# 3. 激活虚拟环境
+# Windows:
+.venv\\Scripts\\activate
+# Linux/Mac:
+source .venv/bin/activate
+
+# 4. 安装依赖
+pip install -r requirements.txt
+
+# 5. 运行应用
+uvicorn main:app --reload --host 0.0.0.0 --port 8000
+```
+
+### 生产环境部署
+
+1. 修改 `.env` 文件中的配置：
+   - 设置强密钥
+   - 关闭DEBUG模式
+   - 使用生产数据库
+
+2. 使用生产级服务器（如uvicorn with gunicorn）
+
+3. 配置反向代理（如Nginx）
+
+## 开发说明
+
+### 项目结构
+```
+web_security/
+├── main.py              # 主应用文件
+├── database.py          # 数据库配置
+├── models.py            # 数据模型
+├── schemas.py           # Pydantic模式
+├── auth.py              # 认证模块
+├── requirements.txt     # 依赖列表
+├── .env.example         # 环境变量示例
+└── README.md           # 项目说明
+```
+
+### 扩展功能建议
+
+1. **文件上传**: 支持文档文件上传
+2. **文档分享**: 文档分享和协作功能
+3. **版本控制**: 文档版本管理
+4. **搜索功能**: 文档内容搜索
+5. **权限分级**: 更细粒度的权限控制
+6. **安全升级**: 升级到生产级安全认证
+   - 安装bcrypt: `pip install bcrypt passlib[bcrypt]`
+   - 更新auth.py中的密码处理函数
+   - 重新创建数据库以加密现有密码
+
+## 许可证
+
+MIT License
\ No newline at end of file
diff --git a/app.js b/app.js
new file mode 100644
index 0000000..52cc472
--- /dev/null
+++ b/app.js
@@ -0,0 +1,617 @@
+// API基础URL
+const API_BASE_URL = 'http://localhost:8001';
+
+// 全局状态
+let currentUser = null;
+let accessToken = localStorage.getItem('accessToken');
+let lastApiCalls = {}; // 记录上次API调用时间，防止重复请求
+
+// DOM元素
+const navMenu = document.getElementById('navMenu');
+const userInfo = document.getElementById('userInfo');
+const loginBtn = document.getElementById('loginBtn');
+const registerBtn = document.getElementById('registerBtn');
+const logoutBtn = document.getElementById('logoutBtn');
+
+const loginSection = document.getElementById('loginSection');
+const registerSection = document.getElementById('registerSection');
+const mainSection = document.getElementById('mainSection');
+
+const loginForm = document.getElementById('loginForm');
+const registerForm = document.getElementById('registerForm');
+const editProfileForm = document.getElementById('editProfileForm');
+const createDocForm = document.getElementById('createDocForm');
+const editDocForm = document.getElementById('editDocForm');
+
+const currentUserName = document.getElementById('currentUserName');
+const editProfileBtn = document.getElementById('editProfileBtn');
+const viewLogsBtn = document.getElementById('viewLogsBtn');
+const createDocBtn = document.getElementById('createDocBtn');
+
+const documentsList = document.getElementById('documentsList');
+const logsList = document.getElementById('logsList');
+
+const message = document.getElementById('message');
+
+// 模态框相关元素
+const editProfileModal = document.getElementById('editProfileModal');
+const createDocModal = document.getElementById('createDocModal');
+const editDocModal = document.getElementById('editDocModal');
+const logsModal = document.getElementById('logsModal');
+
+// 用户管理相关元素
+const userManagementSection = document.getElementById('userManagementSection');
+const usersList = document.getElementById('usersList');
+const refreshUsersBtn = document.getElementById('refreshUsersBtn');
+
+// API请求函数
+async function apiRequest(url, options = {}) {
+    const config = {
+        headers: {
+            'Content-Type': 'application/json',
+            ...options.headers
+        },
+        ...options
+    };
+
+    if (accessToken) {
+        config.headers['Authorization'] = `Bearer ${accessToken}`;
+    }
+
+    try {
+        const response = await fetch(`${API_BASE_URL}${url}`, config);
+        
+        if (response.status === 401) {
+            // Token过期，清除本地存储并重新登录
+            accessToken = null;
+            localStorage.removeItem('accessToken');
+            currentUser = null;
+            showLoginSection();
+            showMessage('登录已过期，请重新登录', 'error');
+            return null;
+        }
+
+        if (!response.ok) {
+            const errorData = await response.json().catch(() => ({}));
+            throw new Error(errorData.detail || `HTTP error! status: ${response.status}`);
+        }
+
+        const result = await response.json();
+        return result;
+    } catch (error) {
+        console.error('API请求错误:', error);
+        showMessage(`请求失败: ${error.message}`, 'error');
+        return null;
+    }
+}
+
+// 显示消息提示
+function showMessage(text, type = 'info') {
+    message.textContent = text;
+    message.className = `message ${type}`;
+    message.style.display = 'block';
+    
+    setTimeout(() => {
+        message.style.display = 'none';
+    }, 3000);
+}
+
+// 用户认证相关函数
+async function login(username, password) {
+    const data = await apiRequest('/auth/login', {
+        method: 'POST',
+        body: JSON.stringify({ username, password })
+    });
+
+    if (data && data.access_token) {
+        accessToken = data.access_token;
+        localStorage.setItem('accessToken', accessToken);
+        await loadCurrentUser();
+        showMainSection();
+        showMessage('登录成功', 'success');
+        return true;
+    }
+    return false;
+}
+
+async function register(userData) {
+    // 将isAdmin添加到userData中
+    const registrationData = {
+        ...userData,
+        is_admin: document.getElementById('registerIsAdmin') ? document.getElementById('registerIsAdmin').checked : false
+    };
+    
+    const data = await apiRequest('/auth/register', {
+        method: 'POST',
+        body: JSON.stringify(registrationData)
+    });
+
+    if (data) {
+        showMessage('注册成功，请登录', 'success');
+        // 重置勾选框
+        if(document.getElementById('registerIsAdmin')) {
+            document.getElementById('registerIsAdmin').checked = false;
+        }
+        showLoginSection();
+        return true;
+    }
+    return false;
+}
+
+async function logout() {
+    await apiRequest('/auth/logout', { method: 'POST' });
+    accessToken = null;
+    localStorage.removeItem('accessToken');
+    currentUser = null;
+    showLoginSection();
+    showMessage('已退出登录', 'info');
+}
+
+async function loadCurrentUser() {
+    const data = await apiRequest('/users/me');
+    if (data) {
+        currentUser = data;
+        userInfo.textContent = `欢迎, ${data.username}`;
+        currentUserName.textContent = data.username;
+        return true;
+    }
+    return false;
+}
+
+async function updateUserProfile(updateData) {
+    const data = await apiRequest('/users/me', {
+        method: 'PUT',
+        body: JSON.stringify(updateData)
+    });
+
+    if (data) {
+        await loadCurrentUser();
+        showMessage('个人信息更新成功', 'success');
+        return true;
+    }
+    return false;
+}
+
+// 文档管理相关函数
+async function loadDocuments() {
+    const data = await apiRequest('/documents');
+    if (data) {
+        displayDocuments(data);
+        return true;
+    }
+    return false;
+}
+
+async function createDocument(docData) {
+    const data = await apiRequest('/documents', {
+        method: 'POST',
+        body: JSON.stringify(docData)
+    });
+
+    if (data) {
+        await loadDocuments();
+        showMessage('文档创建成功', 'success');
+        return true;
+    }
+    return false;
+}
+
+async function updateDocument(docId, docData) {
+    const data = await apiRequest(`/documents/${docId}`, {
+        method: 'PUT',
+        body: JSON.stringify(docData)
+    });
+
+    if (data) {
+        await loadDocuments();
+        showMessage('文档更新成功', 'success');
+        return true;
+    }
+    return false;
+}
+
+async function deleteDocument(docId) {
+    const data = await apiRequest(`/documents/${docId}`, {
+        method: 'DELETE'
+    });
+
+    if (data) {
+        await loadDocuments();
+        showMessage('文档删除成功', 'success');
+        return true;
+    }
+    return false;
+}
+
+// 操作日志相关函数
+async function loadLogs() {
+    const data = await apiRequest('/logs/my');
+    if (data) {
+        displayLogs(data);
+        return true;
+    }
+    return false;
+}
+
+// 用户管理相关函数
+async function loadUsers() {
+    const data = await apiRequest('/users');
+    if (data) {
+        displayUsers(data);
+        return true;
+    }
+    return false;
+}
+
+async function deleteUser(userId) {
+    if (confirm('确定要删除这个用户吗？此操作不可恢复。')) {
+        const data = await apiRequest(`/users/${userId}`, {
+            method: 'DELETE'
+        });
+
+        if (data) {
+            await loadUsers();
+            showMessage('用户删除成功', 'success');
+            return true;
+        }
+    }
+    return false;
+}
+
+// 界面显示控制函数
+function showLoginSection() {
+    loginSection.style.display = 'block';
+    registerSection.style.display = 'none';
+    mainSection.style.display = 'none';
+    loginBtn.style.display = 'inline-block';
+    registerBtn.style.display = 'inline-block';
+    logoutBtn.style.display = 'none';
+    userInfo.style.display = 'none';
+}
+
+function showRegisterSection() {
+    loginSection.style.display = 'none';
+    registerSection.style.display = 'block';
+    mainSection.style.display = 'none';
+}
+
+function showMainSection() {
+    loginSection.style.display = 'none';
+    registerSection.style.display = 'none';
+    mainSection.style.display = 'block';
+    loginBtn.style.display = 'none';
+    registerBtn.style.display = 'none';
+    logoutBtn.style.display = 'inline-block';
+    userInfo.style.display = 'inline-block';
+    
+    // 检查是否为管理员，如果是则显示用户管理界面
+    if (currentUser && currentUser.is_admin) {
+        userManagementSection.style.display = 'block';
+        loadUsers();
+    } else {
+        userManagementSection.style.display = 'none';
+    }
+    
+    loadDocuments();
+}
+
+// 显示/隐藏模态框函数
+function showModal(modal) {
+    modal.style.display = 'flex';
+}
+
+function hideModal(modal) {
+    modal.style.display = 'none';
+}
+
+// 文档显示函数
+function displayDocuments(documents) {
+    if (documents.length === 0) {
+        documentsList.innerHTML = `
+            <div class="empty-state">
+                <h3>暂无文档</h3>
+                <p>点击"创建新文档"按钮开始创建您的第一个文档</p>
+            </div>
+        `;
+        return;
+    }
+
+    documentsList.innerHTML = documents.map(doc => `
+        <div class="document-item" onclick="openEditDocumentModal(${doc.id})">
+            <div class="document-header">
+                <div>
+                    <div class="document-title">${escapeHtml(doc.title)}</div>
+                    <div class="document-meta">
+                        <span>类型: ${doc.file_type}</span>
+                        <span>大小: ${formatFileSize(doc.file_size)}</span>
+                        <span>${doc.is_public ? '公开' : '私有'}</span>
+                    </div>
+                </div>
+                <div class="document-actions">
+                    <button class="btn-secondary" onclick="event.stopPropagation(); openEditDocumentModal(${doc.id})">编辑</button>
+                </div>
+            </div>
+            ${doc.description ? `<div class="document-description">${escapeHtml(doc.description)}</div>` : ''}
+            <div class="document-content-preview">${escapeHtml(doc.content.substring(0, 100))}${doc.content.length > 100 ? '...' : ''}</div>
+            <div class="document-meta">创建时间: ${formatDate(doc.created_at)}</div>
+        </div>
+    `).join('');
+}
+
+// 用户显示函数
+function displayUsers(users) {
+    if (users.length === 0) {
+        usersList.innerHTML = '<div class="empty-state"><h3>暂无用户</h3></div>';
+        return;
+    }
+
+    usersList.innerHTML = users.map(user => `
+        <div class="user-item">
+            <div class="user-header">
+                <div class="user-info">
+                    <div class="user-username">${escapeHtml(user.username)}</div>
+                    <div class="user-email">${escapeHtml(user.email)}</div>
+                    ${user.full_name ? `<div class="user-fullname">${escapeHtml(user.full_name)}</div>` : ''}
+                    <div class="user-meta">
+                        <span>ID: ${user.id}</span>
+                        <span>注册时间: ${formatDate(user.created_at)}</span>
+                        ${user.is_admin ? '<span class="user-admin-badge">管理员</span>' : ''}
+                    </div>
+                </div>
+                <div class="user-actions">
+                    ${user.id !== currentUser.id ? `<button class="btn-danger" onclick="deleteUser(${user.id})">删除</button>` : ''}
+                </div>
+            </div>
+        </div>
+    `).join('');
+}
+
+// 日志显示函数
+function displayLogs(logs) {
+    if (logs.length === 0) {
+        logsList.innerHTML = '<div class="empty-state"><h3>暂无操作日志</h3></div>';
+        return;
+    }
+
+    logsList.innerHTML = logs.map(log => `
+        <div class="log-item">
+            <div class="log-header">
+                <span class="log-action">${escapeHtml(log.operation)}</span>
+                <span class="log-time">${formatDate(log.created_at)}</span>
+            </div>
+            <div class="log-details">
+                详情: ${escapeHtml(log.details || '无')}
+            </div>
+        </div>
+    `).join('');
+}
+
+// 工具函数
+function escapeHtml(text) {
+    const div = document.createElement('div');
+    div.textContent = text;
+    return div.innerHTML;
+}
+
+function formatDate(dateString) {
+    return new Date(dateString).toLocaleString('zh-CN');
+}
+
+function formatFileSize(bytes) {
+    if (bytes === 0) return '0 B';
+    const k = 1024;
+    const sizes = ['B', 'KB', 'MB', 'GB'];
+    const i = Math.floor(Math.log(bytes) / Math.log(k));
+    return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
+}
+
+// 模态框操作函数
+function openEditProfileModal() {
+    if (!currentUser) return;
+    
+    document.getElementById('editEmail').value = currentUser.email || '';
+    document.getElementById('editFullName').value = currentUser.full_name || '';
+    document.getElementById('editPassword').value = '';
+    
+    showModal(editProfileModal);
+}
+
+function openCreateDocumentModal() {
+    document.getElementById('docTitle').value = '';
+    document.getElementById('docDescription').value = '';
+    document.getElementById('docContent').value = '';
+    document.getElementById('docType').value = 'txt';
+    document.getElementById('docPublic').checked = false;
+    
+    showModal(createDocModal);
+}
+
+async function openEditDocumentModal(docId) {
+    const data = await apiRequest(`/documents/${docId}`);
+    if (!data) return;
+    
+    document.getElementById('editDocId').value = docId;
+    document.getElementById('editDocTitle').value = data.title;
+    document.getElementById('editDocDescription').value = data.description || '';
+    document.getElementById('editDocContent').value = data.content;
+    document.getElementById('editDocType').value = data.file_type;
+    document.getElementById('editDocPublic').checked = data.is_public;
+    
+    showModal(editDocModal);
+}
+
+async function openLogsModal() {
+    await loadLogs();
+    showModal(logsModal);
+}
+
+// 导航按钮事件
+loginBtn.addEventListener('click', showLoginSection);
+registerBtn.addEventListener('click', showRegisterSection);
+logoutBtn.addEventListener('click', logout);
+
+// 表单切换链接
+document.getElementById('showRegister').addEventListener('click', (e) => {
+    e.preventDefault();
+    showRegisterSection();
+});
+
+document.getElementById('showLogin').addEventListener('click', (e) => {
+    e.preventDefault();
+    showLoginSection();
+});
+
+    // 删除文档按钮
+    document.getElementById('deleteDocBtn').addEventListener('click', async (e) => {
+        e.preventDefault();
+        const docId = document.getElementById('editDocId').value;
+        
+        if (confirm('确定要删除这个文档吗？此操作不可恢复。')) {
+            const success = await deleteDocument(docId);
+            if (success) {
+                hideModal(editDocModal);
+            }
+        }
+    });
+
+    // 主界面按钮事件
+    editProfileBtn.addEventListener('click', openEditProfileModal);
+    viewLogsBtn.addEventListener('click', openLogsModal);
+    createDocBtn.addEventListener('click', openCreateDocumentModal);
+    
+    // 用户管理按钮事件
+    refreshUsersBtn.addEventListener('click', loadUsers);
+
+    // 模态框关闭事件
+    document.getElementById('closeEditModal').addEventListener('click', () => hideModal(editProfileModal));
+    document.getElementById('closeCreateDocModal').addEventListener('click', () => hideModal(createDocModal));
+    document.getElementById('closeEditDocModal').addEventListener('click', () => hideModal(editDocModal));
+    document.getElementById('closeLogsModal').addEventListener('click', () => hideModal(logsModal));
+
+    // 点击模态框外部关闭
+    [editProfileModal, createDocModal, editDocModal, logsModal].forEach(modal => {
+        modal.addEventListener('click', (e) => {
+            if (e.target === modal) {
+                hideModal(modal);
+            }
+        });
+    });
+
+    // 键盘事件：ESC键关闭模态框
+    document.addEventListener('keydown', (e) => {
+        if (e.key === 'Escape') {
+            [editProfileModal, createDocModal, editDocModal, logsModal].forEach(modal => {
+                if (modal.style.display === 'flex') {
+                    hideModal(modal);
+                }
+            });
+        }
+    });
+
+
+// 表单提交事件
+loginForm.addEventListener('submit', async (e) => {
+    e.preventDefault();
+    const username = document.getElementById('loginUsername').value;
+    const password = document.getElementById('loginPassword').value;
+    
+    await login(username, password);
+});
+
+registerForm.addEventListener('submit', async (e) => {
+    e.preventDefault();
+    const userData = {
+        username: document.getElementById('registerUsername').value,
+        email: document.getElementById('registerEmail').value,
+        full_name: document.getElementById('registerFullName').value,
+        password: document.getElementById('registerPassword').value,
+        is_admin: document.getElementById('registerIsAdmin').checked
+    };
+    
+    await register(userData);
+});
+
+editProfileForm.addEventListener('submit', async (e) => {
+    e.preventDefault();
+    const updateData = {
+        email: document.getElementById('editEmail').value,
+        full_name: document.getElementById('editFullName').value
+    };
+    
+    const newPassword = document.getElementById('editPassword').value;
+    if (newPassword) {
+        updateData.password = newPassword;
+    }
+    
+    const success = await updateUserProfile(updateData);
+    if (success) {
+        hideModal(editProfileModal);
+    }
+});
+
+createDocForm.addEventListener('submit', async (e) => {
+    e.preventDefault();
+    const docData = {
+        title: document.getElementById('docTitle').value,
+        description: document.getElementById('docDescription').value,
+        content: document.getElementById('docContent').value,
+        file_type: document.getElementById('docType').value,
+        is_public: document.getElementById('docPublic').checked
+    };
+    
+    const success = await createDocument(docData);
+    if (success) {
+        hideModal(createDocModal);
+    }
+});
+
+editDocForm.addEventListener('submit', async (e) => {
+    e.preventDefault();
+    const docId = document.getElementById('editDocId').value;
+    const docData = {
+        title: document.getElementById('editDocTitle').value,
+        description: document.getElementById('editDocDescription').value,
+        content: document.getElementById('editDocContent').value,
+        file_type: document.getElementById('editDocType').value,
+        is_public: document.getElementById('editDocPublic').checked
+    };
+    
+    const success = await updateDocument(docId, docData);
+    if (success) {
+        hideModal(editDocModal);
+    }
+});
+
+// 事件监听器
+let isInitialized = false; // 防止重复初始化
+document.addEventListener('DOMContentLoaded', async function() {
+    // 防止重复初始化
+    if (isInitialized) {
+        console.log('页面已初始化，跳过重复初始化');
+        return;
+    }
+    isInitialized = true;
+    
+    // 检查是否已登录
+    if (accessToken) {
+        try {
+            const success = await loadCurrentUser();
+            if (success) {
+                showMainSection();
+            } else {
+                // 如果loadCurrentUser返回false，说明token无效，清除token并显示登录界面
+                accessToken = null;
+                localStorage.removeItem('accessToken');
+                showLoginSection();
+            }
+        } catch (error) {
+            // 捕获可能的错误，清除token并显示登录界面
+            console.error('初始化错误:', error);
+            accessToken = null;
+            localStorage.removeItem('accessToken');
+            showLoginSection();
+        }
+    } else {
+        showLoginSection();
+    }
+});
\ No newline at end of file
diff --git a/auth.py b/auth.py
new file mode 100644
index 0000000..51dd868
--- /dev/null
+++ b/auth.py
@@ -0,0 +1,38 @@
+from jose import JWTError, jwt
+from datetime import datetime, timedelta
+from typing import Optional
+import os
+
+# JWT配置
+SECRET_KEY = os.getenv("SECRET_KEY", "your-secret-key-change-in-production")
+ALGORITHM = "HS256"
+ACCESS_TOKEN_EXPIRE_MINUTES = 30
+
+def verify_password(plain_password: str, stored_password: str) -> bool:
+    """验证密码 - 简化版本，直接比较字符串"""
+    return plain_password == stored_password
+
+def get_password_hash(password: str) -> str:
+    """生成密码哈希 - 简化版本，直接返回原密码"""
+    return password
+
+def create_access_token(data: dict, expires_delta: Optional[timedelta] = None):
+    """创建访问令牌"""
+    to_encode = data.copy()
+    
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
+    
+    to_encode.update({"exp": expire})
+    encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
+    return encoded_jwt
+
+def verify_token(token: str) -> Optional[dict]:
+    """验证令牌"""
+    try:
+        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
+        return payload
+    except JWTError:
+        return None
\ No newline at end of file
diff --git a/database.py b/database.py
new file mode 100644
index 0000000..69da44f
--- /dev/null
+++ b/database.py
@@ -0,0 +1,18 @@
+from sqlalchemy.engine.create import create_engine
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm.session import sessionmaker
+
+# SQLite数据库URL
+SQLALCHEMY_DATABASE_URL = "sqlite:///./document_management.db"
+
+# 创建数据库引擎
+engine = create_engine(
+    SQLALCHEMY_DATABASE_URL, 
+    connect_args={"check_same_thread": False}
+)
+
+# 创建SessionLocal类
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+# 创建Base类
+Base = declarative_base()
\ No newline at end of file
diff --git a/index.html b/index.html
new file mode 100644
index 0000000..fdd65da
--- /dev/null
+++ b/index.html
@@ -0,0 +1,224 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>文档在线管理系统</title>
+    <link rel="stylesheet" href="style.css">
+</head>
+<body>
+    <!-- 导航栏 -->
+    <nav class="navbar">
+        <div class="nav-container">
+            <h1 class="nav-logo">📄 文档管理系统</h1>
+            <div class="nav-menu" id="navMenu">
+                <span class="user-info" id="userInfo" style="display: none;"></span>
+                <button class="nav-btn" id="loginBtn">登录</button>
+                <button class="nav-btn" id="registerBtn">注册</button>
+                <button class="nav-btn" id="logoutBtn" style="display: none;">登出</button>
+            </div>
+        </div>
+    </nav>
+
+    <!-- 主要内容区域 -->
+    <main class="main-content">
+        <!-- 登录表单 -->
+        <div id="loginSection" class="form-section">
+            <h2>用户登录</h2>
+            <form id="loginForm" class="auth-form">
+                <div class="form-group">
+                    <label for="loginUsername">用户名:</label>
+                    <input type="text" id="loginUsername" required>
+                </div>
+                <div class="form-group">
+                    <label for="loginPassword">密码:</label>
+                    <input type="password" id="loginPassword" required>
+                </div>
+                <button type="submit" class="btn-primary">登录</button>
+                <p>还没有账户？<a href="#" id="showRegister">立即注册</a></p>
+            </form>
+        </div>
+
+        <!-- 注册表单 -->
+        <div id="registerSection" class="form-section" style="display: none;">
+            <h2>用户注册</h2>
+            <form id="registerForm" class="auth-form">
+                <div class="form-group">
+                    <label for="registerUsername">用户名:</label>
+                    <input type="text" id="registerUsername" required>
+                </div>
+                <div class="form-group">
+                    <label for="registerEmail">邮箱:</label>
+                    <input type="email" id="registerEmail" required>
+                </div>
+                <div class="form-group">
+                    <label for="registerFullName">姓名:</label>
+                    <input type="text" id="registerFullName">
+                </div>
+                <div class="form-group">
+                    <label for="registerPassword">密码:</label>
+                    <input type="password" id="registerPassword" required>
+                </div>
+                <div class="form-group checkbox-group">
+                    <label>
+                        <input type="checkbox" id="registerIsAdmin"> 注册为管理员
+                    </label>
+                </div>
+                <button type="submit" class="btn-primary">注册</button>
+                <p>已有账户？<a href="#" id="showLogin">立即登录</a></p>
+            </form>
+        </div>
+
+        <!-- 主界面（登录后显示） -->
+        <div id="mainSection" style="display: none;">
+            <!-- 用户信息面板 -->
+            <div class="user-panel">
+                <h2>欢迎, <span id="currentUserName"></span>!</h2>
+                <div class="user-actions">
+                    <button class="btn-secondary" id="editProfileBtn">编辑个人信息</button>
+                    <button class="btn-secondary" id="viewLogsBtn">查看操作日志</button>
+                </div>
+            </div>
+
+            <!-- 用户管理（仅管理员可见） -->
+            <div id="userManagementSection" class="user-management-section" style="display: none;">
+                <div class="section-header">
+                    <h2>用户管理</h2>
+                    <button class="btn-primary" id="refreshUsersBtn">刷新用户列表</button>
+                </div>
+                
+                <!-- 用户列表 -->
+                <div id="usersList" class="users-list">
+                    <!-- 用户列表将通过JavaScript动态生成 -->
+                </div>
+            </div>
+
+            <!-- 文档管理 -->
+            <div class="documents-section">
+                <div class="section-header">
+                    <h2>文档管理</h2>
+                    <button class="btn-primary" id="createDocBtn">创建新文档</button>
+                </div>
+                
+                <!-- 文档列表 -->
+                <div id="documentsList" class="documents-list">
+                    <!-- 文档列表将通过JavaScript动态生成 -->
+                </div>
+            </div>
+        </div>
+
+        <!-- 编辑个人信息模态框 -->
+        <div id="editProfileModal" class="modal" style="display: none;">
+            <div class="modal-content">
+                <span class="close" id="closeEditModal">&times;</span>
+                <h3>编辑个人信息</h3>
+                <form id="editProfileForm">
+                    <div class="form-group">
+                        <label for="editEmail">邮箱:</label>
+                        <input type="email" id="editEmail" required>
+                    </div>
+                    <div class="form-group">
+                        <label for="editFullName">姓名:</label>
+                        <input type="text" id="editFullName">
+                    </div>
+                    <div class="form-group">
+                        <label for="editPassword">新密码（可选）:</label>
+                        <input type="password" id="editPassword" placeholder="留空则不修改密码">
+                    </div>
+                    <button type="submit" class="btn-primary">保存修改</button>
+                </form>
+            </div>
+        </div>
+
+        <!-- 创建文档模态框 -->
+        <div id="createDocModal" class="modal" style="display: none;">
+            <div class="modal-content">
+                <span class="close" id="closeCreateDocModal">&times;</span>
+                <h3>创建新文档</h3>
+                <form id="createDocForm">
+                    <div class="form-group">
+                        <label for="docTitle">标题:</label>
+                        <input type="text" id="docTitle" required>
+                    </div>
+                    <div class="form-group">
+                        <label for="docDescription">描述:</label>
+                        <textarea id="docDescription" rows="3"></textarea>
+                    </div>
+                    <div class="form-group">
+                        <label for="docContent">内容:</label>
+                        <textarea id="docContent" rows="6" required></textarea>
+                    </div>
+                    <div class="form-group">
+                        <label for="docType">文件类型:</label>
+                        <select id="docType">
+                            <option value="txt">文本文件</option>
+                            <option value="md">Markdown</option>
+                            <option value="html">HTML</option>
+                        </select>
+                    </div>
+                    <div class="form-group">
+                        <label>
+                            <input type="checkbox" id="docPublic"> 公开文档
+                        </label>
+                    </div>
+                    <button type="submit" class="btn-primary">创建文档</button>
+                </form>
+            </div>
+        </div>
+
+        <!-- 编辑文档模态框 -->
+        <div id="editDocModal" class="modal" style="display: none;">
+            <div class="modal-content">
+                <span class="close" id="closeEditDocModal">&times;</span>
+                <h3>编辑文档</h3>
+                <form id="editDocForm">
+                    <input type="hidden" id="editDocId">
+                    <div class="form-group">
+                        <label for="editDocTitle">标题:</label>
+                        <input type="text" id="editDocTitle" required>
+                    </div>
+                    <div class="form-group">
+                        <label for="editDocDescription">描述:</label>
+                        <textarea id="editDocDescription" rows="3"></textarea>
+                    </div>
+                    <div class="form-group">
+                        <label for="editDocContent">内容:</label>
+                        <textarea id="editDocContent" rows="6" required></textarea>
+                    </div>
+                    <div class="form-group">
+                        <label for="editDocType">文件类型:</label>
+                        <select id="editDocType">
+                            <option value="txt">文本文件</option>
+                            <option value="md">Markdown</option>
+                            <option value="html">HTML</option>
+                        </select>
+                    </div>
+                    <div class="form-group">
+                        <label>
+                            <input type="checkbox" id="editDocPublic"> 公开文档
+                        </label>
+                    </div>
+                    <button type="submit" class="btn-primary">保存修改</button>
+                    <button type="button" class="btn-danger" id="deleteDocBtn">删除文档</button>
+                </form>
+            </div>
+        </div>
+
+        <!-- 操作日志模态框 -->
+        <div id="logsModal" class="modal" style="display: none;">
+            <div class="modal-content">
+                <span class="close" id="closeLogsModal">&times;</span>
+                <h3>操作日志</h3>
+                <div id="logsList" class="logs-list">
+                    <!-- 日志列表将通过JavaScript动态生成 -->
+                </div>
+            </div>
+        </div>
+    </main>
+
+    <!-- 消息提示 -->
+    <div id="message" class="message" style="display: none;"></div>
+
+    <script src="app.js"></script>
+</body>
+</html>
\ No newline at end of file
diff --git a/main.py b/main.py
new file mode 100644
index 0000000..b260476
--- /dev/null
+++ b/main.py
@@ -0,0 +1,399 @@
+from fastapi import FastAPI, Depends, HTTPException, status
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
+from sqlalchemy.orm.session import Session
+from typing import List, Optional
+import uvicorn
+import os
+
+from database import engine, SessionLocal, Base
+from models import User, Document, UserOperationLog
+from schemas import (
+    UserCreate, UserLogin, UserResponse, UserUpdate,
+    DocumentCreate, DocumentResponse, DocumentUpdate,
+    UserOperationLogResponse
+)
+from auth import create_access_token, verify_token, get_password_hash, verify_password
+
+# 创建数据库表
+Base.metadata.create_all(bind=engine)
+
+app = FastAPI(
+    title="文档在线管理系统",
+    description="一个基于FastAPI的文档在线管理系统",
+    version="1.0.0"
+)
+
+# 配置CORS
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# 依赖注入 - 获取数据库会话
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()
+
+# 依赖注入 - 获取当前用户
+def get_current_user(
+    credentials: HTTPAuthorizationCredentials = Depends(HTTPBearer()),
+    db: Session = Depends(get_db)
+):
+    token = credentials.credentials
+    payload = verify_token(token)
+    if payload is None:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="无效的token"
+        )
+    
+    user_id = payload.get("sub")
+    user = db.query(User).filter(User.id == user_id).first()
+    if user is None:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="用户不存在"
+        )
+    return user
+
+def create_operation_log(db: Session, user_id: int, operation: str, details: str = ""):
+    """创建用户操作记录"""
+    log = UserOperationLog(
+        user_id=user_id,
+        operation=operation,
+        details=details
+    )
+    db.add(log)
+    db.commit()
+    db.refresh(log)
+    return log
+
+# 用户认证相关路由
+@app.post("/auth/register", response_model=UserResponse)
+def register(user: UserCreate, db: Session = Depends(get_db)):
+    # 检查用户名是否已存在
+    existing_user = db.query(User).filter(User.username == user.username).first()
+    if existing_user:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="用户名已存在"
+        )
+    
+    # 检查邮箱是否已存在
+    existing_email = db.query(User).filter(User.email == user.email).first()
+    if existing_email:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="邮箱已被注册"
+        )
+    
+    # 创建新用户
+    hashed_password = get_password_hash(user.password)
+    db_user = User(
+        username=user.username,
+        email=user.email,
+        hashed_password=hashed_password,
+        full_name=user.full_name,
+        is_admin=user.is_admin  # 设置管理员权限
+    )
+    db.add(db_user)
+    db.commit()
+    db.refresh(db_user)
+    
+    # 记录操作日志
+    create_operation_log(db, db_user.id, "用户注册", f"用户 {user.username} 注册成功")
+    
+    return db_user
+
+@app.post("/auth/login")
+def login(user: UserLogin, db: Session = Depends(get_db)):
+    # 验证用户
+    db_user = db.query(User).filter(User.username == user.username).first()
+    if not db_user or not verify_password(user.password, db_user.hashed_password):
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="用户名或密码错误"
+        )
+    
+    # 生成token
+    access_token = create_access_token(data={"sub": str(db_user.id)})
+    
+    # 记录操作日志
+    create_operation_log(db, db_user.id, "用户登录", "用户登录成功")
+    
+    return {
+        "access_token": access_token,
+        "token_type": "bearer",
+        "user": UserResponse.from_orm(db_user)
+    }
+
+@app.post("/auth/logout")
+def logout(current_user: User = Depends(get_current_user), db: Session = Depends(get_db)):
+    # 记录操作日志
+    create_operation_log(db, current_user.id, "用户登出", "用户登出成功")
+    
+    return {"message": "登出成功"}
+
+# 用户管理路由
+@app.get("/users/me", response_model=UserResponse)
+def read_users_me(current_user: User = Depends(get_current_user)):
+    return current_user
+
+@app.put("/users/me", response_model=UserResponse)
+def update_user_me(
+    user_update: UserUpdate,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    update_data = user_update.dict(exclude_unset=True)
+    
+    # 如果更新密码，需要重新哈希
+    if "password" in update_data:
+        update_data["hashed_password"] = get_password_hash(update_data.pop("password"))
+    
+    for field, value in update_data.items():
+        setattr(current_user, field, value)
+    
+    db.commit()
+    db.refresh(current_user)
+    
+    # 记录操作日志
+    create_operation_log(db, current_user.id, "更新用户信息", "用户更新个人信息")
+    
+    return current_user
+
+@app.get("/users", response_model=List[UserResponse])
+def read_users(
+    skip: int = 0,
+    limit: int = 100,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    # 只有管理员可以查看所有用户
+    if not current_user.is_admin:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="没有权限查看用户列表"
+        )
+    
+    users = db.query(User).offset(skip).limit(limit).all()
+    
+    # 记录操作日志
+    create_operation_log(db, current_user.id, "查看用户列表", "管理员查看所有用户")
+    
+    return users
+
+@app.delete("/users/{user_id}")
+def delete_user(
+    user_id: int,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    # 只有管理员可以删除用户
+    if not current_user.is_admin:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="没有权限删除用户"
+        )
+    
+    if user_id == current_user.id:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="不能删除自己的账户"
+        )
+    
+    user = db.query(User).filter(User.id == user_id).first()
+    if not user:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="用户不存在"
+        )
+    
+    db.delete(user)
+    db.commit()
+    
+    # 记录操作日志
+    create_operation_log(db, current_user.id, "删除用户", f"删除用户 {user.username}")
+    
+    return {"message": "用户删除成功"}
+
+# 文档管理路由
+@app.post("/documents", response_model=DocumentResponse)
+def create_document(
+    document: DocumentCreate,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    db_document = Document(
+        **document.dict(),
+        owner_id=current_user.id
+    )
+    db.add(db_document)
+    db.commit()
+    db.refresh(db_document)
+    
+    # 记录操作日志
+    create_operation_log(db, current_user.id, "创建文档", f"创建文档: {document.title}")
+    
+    return db_document
+
+@app.get("/documents", response_model=List[DocumentResponse])
+def read_documents(
+    skip: int = 0,
+    limit: int = 100,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    # 管理员可以查看所有文档，普通用户只能查看自己的文档
+    if current_user.is_admin:
+        documents = db.query(Document).offset(skip).limit(limit).all()
+    else:
+        documents = db.query(Document).filter(
+            Document.owner_id == current_user.id
+        ).offset(skip).limit(limit).all()
+    
+    # 记录操作日志
+    log_action = "查看所有文档列表" if current_user.is_admin else "查看自己的文档"
+    create_operation_log(db, current_user.id, "查看文档列表", log_action)
+    
+    return documents
+
+@app.get("/documents/{document_id}", response_model=DocumentResponse)
+def read_document(
+    document_id: int,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    # 管理员可以查看任何文档，普通用户只能查看自己的文档
+    if current_user.is_admin:
+        document = db.query(Document).filter(Document.id == document_id).first()
+    else:
+        document = db.query(Document).filter(
+            Document.id == document_id,
+            Document.owner_id == current_user.id
+        ).first()
+    
+    if not document:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="文档不存在"
+        )
+    
+    # 记录操作日志
+    log_action = f"管理员查看文档" if current_user.is_admin else f"查看文档: {document.title}"
+    create_operation_log(db, current_user.id, "查看文档", log_action)
+    
+    return document
+
+@app.put("/documents/{document_id}", response_model=DocumentResponse)
+def update_document(
+    document_id: int,
+    document_update: DocumentUpdate,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    # 管理员可以编辑任何文档，普通用户只能编辑自己的文档
+    if current_user.is_admin:
+        document = db.query(Document).filter(Document.id == document_id).first()
+    else:
+        document = db.query(Document).filter(
+            Document.id == document_id,
+            Document.owner_id == current_user.id
+        ).first()
+    
+    if not document:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="文档不存在"
+        )
+    
+    update_data = document_update.dict(exclude_unset=True)
+    for field, value in update_data.items():
+        setattr(document, field, value)
+    
+    db.commit()
+    db.refresh(document)
+    
+    # 记录操作日志
+    log_action = f"管理员更新文档" if current_user.is_admin else f"更新文档: {document.title}"
+    create_operation_log(db, current_user.id, "更新文档", log_action)
+    
+    return document
+
+@app.delete("/documents/{document_id}")
+def delete_document(
+    document_id: int,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    # 管理员可以删除任何文档，普通用户只能删除自己的文档
+    if current_user.is_admin:
+        document = db.query(Document).filter(Document.id == document_id).first()
+    else:
+        document = db.query(Document).filter(
+            Document.id == document_id,
+            Document.owner_id == current_user.id
+        ).first()
+    
+    if not document:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="文档不存在"
+        )
+    
+    db.delete(document)
+    db.commit()
+    
+    # 记录操作日志
+    log_action = f"管理员删除文档" if current_user.is_admin else f"删除文档: {document.title}"
+    create_operation_log(db, current_user.id, "删除文档", log_action)
+    
+    return {"message": "文档删除成功"}
+
+# 操作日志路由
+@app.get("/logs/my", response_model=List[UserOperationLogResponse])
+def read_my_logs(
+    skip: int = 0,
+    limit: int = 100,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    logs = db.query(UserOperationLog).filter(
+        UserOperationLog.user_id == current_user.id
+    ).order_by(UserOperationLog.created_at.desc()).offset(skip).limit(limit).all()
+    
+    return logs
+
+@app.get("/logs", response_model=List[UserOperationLogResponse])
+def read_all_logs(
+    skip: int = 0,
+    limit: int = 100,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    # 只有管理员可以查看所有日志
+    if not current_user.is_admin:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="没有权限查看所有操作日志"
+        )
+    
+    logs = db.query(UserOperationLog).order_by(
+        UserOperationLog.created_at.desc()
+    ).offset(skip).limit(limit).all()
+    
+    return logs
+
+@app.get("/")
+def read_root():
+    return {"message": "文档在线管理系统API"}
+
+if __name__ == "__main__":
+    uvicorn.run("main:app", host="0.0.0.0", port=8000, reload=True)
\ No newline at end of file
diff --git a/models.py b/models.py
new file mode 100644
index 0000000..a3a17e3
--- /dev/null
+++ b/models.py
@@ -0,0 +1,52 @@
+from sqlalchemy import Column, Integer, String, Text, DateTime, Boolean, ForeignKey
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+from database import Base
+
+class User(Base):
+    __tablename__ = "users"
+    
+    id = Column(Integer, primary_key=True, index=True)
+    username = Column(String(50), unique=True, index=True, nullable=False)
+    email = Column(String(100), unique=True, index=True, nullable=False)
+    hashed_password = Column(String(255), nullable=False)
+    full_name = Column(String(100), nullable=True)
+    is_admin = Column(Boolean, default=False)
+    is_active = Column(Boolean, default=True)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
+    
+    # 关系
+    documents = relationship("Document", back_populates="owner")
+    operation_logs = relationship("UserOperationLog", back_populates="user")
+
+class Document(Base):
+    __tablename__ = "documents"
+    
+    id = Column(Integer, primary_key=True, index=True)
+    title = Column(String(200), nullable=False)
+    content = Column(Text, nullable=True)
+    description = Column(String(500), nullable=True)
+    file_type = Column(String(50), default="txt")  # txt, pdf, doc, etc.
+    file_size = Column(Integer, default=0)  # 文件大小（字节）
+    is_public = Column(Boolean, default=False)
+    owner_id = Column(Integer, ForeignKey("users.id"))
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
+    
+    # 关系
+    owner = relationship("User", back_populates="documents")
+
+class UserOperationLog(Base):
+    __tablename__ = "user_operation_logs"
+    
+    id = Column(Integer, primary_key=True, index=True)
+    user_id = Column(Integer, ForeignKey("users.id"))
+    operation = Column(String(100), nullable=False)  # 操作类型
+    details = Column(Text, nullable=True)  # 操作详情
+    ip_address = Column(String(50), nullable=True)  # IP地址
+    user_agent = Column(String(500), nullable=True)  # 用户代理
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    
+    # 关系
+    user = relationship("User", back_populates="operation_logs")
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..b05acf0
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,7 @@
+fastapi==0.104.1
+uvicorn==0.24.0
+sqlalchemy==1.4.54
+python-jose[cryptography]==3.5.0
+python-multipart==0.0.6
+python-dotenv==1.0.0
+pydantic==1.10.26
\ No newline at end of file
diff --git a/schemas.py b/schemas.py
new file mode 100644
index 0000000..598ac6b
--- /dev/null
+++ b/schemas.py
@@ -0,0 +1,110 @@
+from sqlalchemy.orm import Session
+from pydantic import BaseModel, validator, EmailStr
+from typing import Optional
+from datetime import datetime
+import re
+
+
+class UserBase(BaseModel):
+    username: str
+    email: Optional[EmailStr] = None
+    full_name: Optional[str] = None
+
+
+class UserCreate(UserBase):
+    password: str
+    is_admin: bool = False  # 新增管理员字段，默认为False
+    
+    @validator('username')
+    def username_alphanumeric(cls, v):
+        if not v.replace('_', '').isalnum():
+            raise ValueError('用户名只能包含字母、数字和下划线')
+        if len(v) < 3 or len(v) > 20:
+            raise ValueError('用户名长度必须在3-20个字符之间')
+        return v
+    
+    @validator('password')
+    def password_strength(cls, v):
+        if len(v) < 6:
+            raise ValueError('密码长度至少6位')
+        return v
+
+
+class UserLogin(BaseModel):
+    username: str
+    password: str
+
+
+class UserUpdate(BaseModel):
+    email: Optional[EmailStr] = None
+    full_name: Optional[str] = None
+    password: Optional[str] = None
+    
+    @validator('password')
+    def password_strength(cls, v):
+        if v and len(v) < 6:
+            raise ValueError('密码长度至少6位')
+        return v
+
+
+class UserResponse(UserBase):
+    id: int
+    is_admin: bool  # 添加管理员标识
+    is_active: bool
+    created_at: datetime
+    updated_at: Optional[datetime] = None
+    
+    class Config:
+        orm_mode = True
+
+
+# 文档相关模式
+class DocumentBase(BaseModel):
+    title: str
+    content: Optional[str] = None
+    description: Optional[str] = None
+    file_type: str = "txt"
+    file_size: int = 0
+    is_public: bool = False
+
+class DocumentCreate(DocumentBase):
+    pass
+
+class DocumentUpdate(BaseModel):
+    title: Optional[str] = None
+    content: Optional[str] = None
+    description: Optional[str] = None
+    file_type: Optional[str] = None
+    is_public: Optional[bool] = None
+
+class DocumentResponse(DocumentBase):
+    id: int
+    owner_id: int
+    created_at: datetime
+    updated_at: Optional[datetime] = None
+    
+    class Config:
+        orm_mode = True
+
+# 操作日志相关模式
+class UserOperationLogBase(BaseModel):
+    operation: str
+    details: Optional[str] = None
+    ip_address: Optional[str] = None
+    user_agent: Optional[str] = None
+
+class UserOperationLogResponse(UserOperationLogBase):
+    id: int
+    user_id: int
+    created_at: datetime
+    
+    class Config:
+        orm_mode = True
+
+# Token响应模式
+class Token(BaseModel):
+    access_token: str
+    token_type: str
+
+class TokenData(BaseModel):
+    username: Optional[str] = None
diff --git a/style.css b/style.css
new file mode 100644
index 0000000..0255ad2
--- /dev/null
+++ b/style.css
@@ -0,0 +1,542 @@
+/* 全局样式 */
+* {
+    margin: 0;
+    padding: 0;
+    box-sizing: border-box;
+}
+
+body {
+    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
+    line-height: 1.6;
+    color: #333;
+    background-color: #667eea;
+    min-height: 100vh;
+}
+
+/* 导航栏样式 */
+.navbar {
+    background: rgba(255, 255, 255, 0.95);
+    backdrop-filter: blur(10px);
+    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
+    position: sticky;
+    top: 0;
+    z-index: 1000;
+}
+
+.nav-container {
+    max-width: 1200px;
+    margin: 0 auto;
+    padding: 1rem 2rem;
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+}
+
+.nav-logo {
+    font-size: 1.5rem;
+    font-weight: bold;
+    color: #4a5568;
+}
+
+.nav-menu {
+    display: flex;
+    align-items: center;
+    gap: 1rem;
+}
+
+.user-info {
+    color: #4a5568;
+    font-weight: 500;
+}
+
+.nav-btn {
+    padding: 0.5rem 1rem;
+    border: 2px solid #667eea;
+    background: transparent;
+    color: #667eea;
+    border-radius: 6px;
+    cursor: pointer;
+    font-weight: 500;
+    transition: all 0.3s ease;
+}
+
+.nav-btn:hover {
+    background: #667eea;
+    color: white;
+}
+
+/* 主要内容区域 */
+.main-content {
+    max-width: 1200px;
+    margin: 2rem auto;
+    padding: 0 2rem;
+}
+
+/* 表单区域样式 */
+.form-section {
+    background: white;
+    border-radius: 12px;
+    padding: 2rem;
+    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
+    max-width: 400px;
+    margin: 2rem auto;
+}
+
+.form-section h2 {
+    text-align: center;
+    margin-bottom: 1.5rem;
+    color: #4a5568;
+}
+
+.auth-form {
+    display: flex;
+    flex-direction: column;
+    gap: 1rem;
+}
+
+.form-group {
+    display: flex;
+    flex-direction: column;
+    gap: 0.5rem;
+}
+
+.form-group label {
+    font-weight: 500;
+    color: #4a5568;
+}
+
+.form-group input,
+.form-group textarea,
+.form-group select {
+    padding: 0.75rem;
+    border: 2px solid #e2e8f0;
+    border-radius: 6px;
+    font-size: 1rem;
+    transition: border-color 0.3s ease;
+}
+
+.form-group input:focus,
+.form-group textarea:focus,
+.form-group select:focus {
+    outline: none;
+    border-color: #667eea;
+}
+
+.checkbox-group {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+}
+
+.checkbox-group input[type="checkbox"] {
+    width: auto;
+    margin: 0;
+}
+
+/* 按钮样式 */
+.btn-primary {
+    background-color: #667eea;
+    color: white;
+    border: none;
+    padding: 0.75rem 1.5rem;
+    border-radius: 6px;
+    font-size: 1rem;
+    font-weight: 500;
+    cursor: pointer;
+    transition: transform 0.2s ease;
+}
+
+.btn-primary:hover {
+    transform: translateY(-2px);
+}
+
+.btn-secondary {
+    background: #e2e8f0;
+    color: #4a5568;
+    border: none;
+    padding: 0.5rem 1rem;
+    border-radius: 6px;
+    cursor: pointer;
+    font-weight: 500;
+    transition: all 0.3s ease;
+}
+
+.btn-secondary:hover {
+    background: #cbd5e0;
+}
+
+.btn-danger {
+    background: #e53e3e;
+    color: white;
+    border: none;
+    padding: 0.5rem 1rem;
+    border-radius: 6px;
+    cursor: pointer;
+    font-weight: 500;
+    transition: all 0.3s ease;
+}
+
+.btn-danger:hover {
+    background: #c53030;
+}
+
+/* 用户面板样式 */
+.user-panel {
+    background: white;
+    border-radius: 12px;
+    padding: 2rem;
+    margin-bottom: 2rem;
+    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
+}
+
+.user-panel h2 {
+    color: #4a5568;
+    margin-bottom: 1rem;
+}
+
+.user-actions {
+    display: flex;
+    gap: 1rem;
+    flex-wrap: wrap;
+}
+
+/* 用户管理区域 */
+.user-management-section {
+    background: white;
+    border-radius: 12px;
+    padding: 2rem;
+    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
+    margin-bottom: 2rem;
+}
+
+/* 文档管理区域 */
+.documents-section {
+    background: white;
+    border-radius: 12px;
+    padding: 2rem;
+    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
+}
+
+.section-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    margin-bottom: 2rem;
+}
+
+.section-header h2 {
+    color: #4a5568;
+}
+
+/* 文档列表样式 */
+.documents-list {
+    display: grid;
+    gap: 1rem;
+}
+
+.document-item {
+    background: #f7fafc;
+    border: 2px solid #e2e8f0;
+    border-radius: 8px;
+    padding: 1.5rem;
+    transition: all 0.3s ease;
+    cursor: pointer;
+}
+
+.document-item:hover {
+    border-color: #667eea;
+    transform: translateY(-2px);
+    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
+}
+
+.document-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: flex-start;
+    margin-bottom: 0.5rem;
+}
+
+.document-title {
+    font-size: 1.2rem;
+    font-weight: 600;
+    color: #2d3748;
+    margin-bottom: 0.5rem;
+}
+
+.document-meta {
+    display: flex;
+    gap: 1rem;
+    color: #718096;
+    font-size: 0.875rem;
+}
+
+.document-description {
+    color: #4a5568;
+    margin-bottom: 0.5rem;
+}
+
+.document-content-preview {
+    color: #718096;
+    font-size: 0.875rem;
+    line-height: 1.4;
+    max-height: 3rem;
+    overflow: hidden;
+    text-overflow: ellipsis;
+}
+
+.document-actions {
+    display: flex;
+    gap: 0.5rem;
+    margin-top: 1rem;
+}
+
+/* 模态框样式 */
+.modal {
+    position: fixed;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    background: rgba(0, 0, 0, 0.5);
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    z-index: 2000;
+}
+
+.modal-content {
+    background: white;
+    border-radius: 12px;
+    padding: 2rem;
+    max-width: 500px;
+    width: 90%;
+    max-height: 80vh;
+    overflow-y: auto;
+    position: relative;
+}
+
+.modal-content h3 {
+    color: #4a5568;
+    margin-bottom: 1.5rem;
+}
+
+.close {
+    position: absolute;
+    top: 1rem;
+    right: 1.5rem;
+    font-size: 1.5rem;
+    cursor: pointer;
+    color: #718096;
+}
+
+.close:hover {
+    color: #4a5568;
+}
+
+/* 用户列表样式 */
+.users-list {
+    display: grid;
+    gap: 1rem;
+}
+
+.user-item {
+    background: #f7fafc;
+    border: 2px solid #e2e8f0;
+    border-radius: 8px;
+    padding: 1.5rem;
+    transition: all 0.3s ease;
+}
+
+.user-item:hover {
+    border-color: #667eea;
+    transform: translateY(-2px);
+    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
+}
+
+.user-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: flex-start;
+    margin-bottom: 0.5rem;
+}
+
+.user-info {
+    flex: 1;
+}
+
+.user-username {
+    font-size: 1.2rem;
+    font-weight: 600;
+    color: #2d3748;
+    margin-bottom: 0.25rem;
+}
+
+.user-email {
+    color: #718096;
+    font-size: 0.875rem;
+    margin-bottom: 0.25rem;
+}
+
+.user-fullname {
+    color: #4a5568;
+    font-size: 0.875rem;
+    margin-bottom: 0.5rem;
+}
+
+.user-meta {
+    display: flex;
+    gap: 1rem;
+    color: #718096;
+    font-size: 0.75rem;
+}
+
+.user-admin-badge {
+    background: #667eea;
+    color: white;
+    padding: 0.25rem 0.5rem;
+    border-radius: 12px;
+    font-size: 0.75rem;
+    font-weight: 600;
+}
+
+.user-actions {
+    display: flex;
+    gap: 0.5rem;
+}
+
+/* 日志列表样式 */
+.logs-list {
+    max-height: 400px;
+    overflow-y: auto;
+}
+
+.log-item {
+    background: #f7fafc;
+    border: 1px solid #e2e8f0;
+    border-radius: 6px;
+    padding: 1rem;
+    margin-bottom: 0.5rem;
+}
+
+.log-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    margin-bottom: 0.5rem;
+}
+
+.log-action {
+    font-weight: 600;
+    color: #2d3748;
+}
+
+.log-time {
+    color: #718096;
+    font-size: 0.875rem;
+}
+
+.log-details {
+    color: #4a5568;
+    font-size: 0.875rem;
+}
+
+/* 消息提示样式 */
+.message {
+    position: fixed;
+    top: 20px;
+    right: 20px;
+    padding: 1rem 1.5rem;
+    border-radius: 6px;
+    color: white;
+    font-weight: 500;
+    z-index: 3000;
+    animation: slideIn 0.3s ease;
+}
+
+.message.success {
+    background: #48bb78;
+}
+
+.message.error {
+    background: #f56565;
+}
+
+.message.info {
+    background: #4299e1;
+}
+
+@keyframes slideIn {
+    from {
+        transform: translateX(100%);
+        opacity: 0;
+    }
+    to {
+        transform: translateX(0);
+        opacity: 1;
+    }
+}
+
+/* 响应式设计 */
+@media (max-width: 768px) {
+    .nav-container {
+        padding: 1rem;
+    }
+    
+    .main-content {
+        padding: 0 1rem;
+        margin: 1rem auto;
+    }
+    
+    .form-section {
+        margin: 1rem auto;
+        padding: 1.5rem;
+    }
+    
+    .section-header {
+        flex-direction: column;
+        gap: 1rem;
+        align-items: flex-start;
+    }
+    
+    .user-actions {
+        flex-direction: column;
+    }
+    
+    .document-header {
+        flex-direction: column;
+        gap: 0.5rem;
+    }
+    
+    .modal-content {
+        width: 95%;
+        padding: 1.5rem;
+    }
+}
+
+/* 加载动画 */
+.loading {
+    display: inline-block;
+    width: 20px;
+    height: 20px;
+    border: 3px solid #f3f3f3;
+    border-top: 3px solid #667eea;
+    border-radius: 50%;
+    animation: spin 1s linear infinite;
+}
+
+@keyframes spin {
+    0% { transform: rotate(0deg); }
+    100% { transform: rotate(360deg); }
+}
+
+/* 空状态样式 */
+.empty-state {
+    text-align: center;
+    padding: 3rem 2rem;
+    color: #718096;
+}
+
+.empty-state h3 {
+    margin-bottom: 0.5rem;
+    color: #4a5568;
+}
\ No newline at end of file