feat: add chunk file upload

README_CHUNK_UPLOAD.md

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+# V-Hono 大文件分片上传系统
+
+## 概述
+
+V-Hono 大文件分片上传系统是一个基于 V 语言和 Hono 框架构建的高性能文件上传解决方案。支持大文件分片上传、断点续传、秒传、自动合并等功能。
+
+## 主要特性
+
+- ✅ **分片上传**：支持大文件分片上传，默认分片大小 2MB
+- ✅ **断点续传**：支持上传中断后继续上传
+- ✅ **秒传功能**：基于文件哈希的秒传检测
+- ✅ **自动合并**：所有分片上传完成后自动合并文件
+- ✅ **文件去重**：基于文件哈希的去重机制
+- ✅ **数据库存储**：使用 SQLite 存储文件元数据
+- ✅ **RESTful API**：完整的 REST API 接口
+- ✅ **Web 界面**：提供友好的 Web 上传界面
+
+## 系统架构
+
+```
+前端 (Web/移动端)
+    ↓
+V-Hono 服务器
+    ↓
+分片存储 (./uploads/chunks/)
+    ↓
+文件合并 (./uploads/files/)
+    ↓
+数据库 (SQLite)
+```
+
+## 安装和运行
+
+### 1. 环境要求
+
+- V 语言 0.4.x 或更高版本
+- Windows/Linux/macOS
+
+### 2. 启动服务器
+
+```bash
+# 克隆项目
+git clone <repository-url>
+cd v-hono
+
+# 启动分片上传服务器
+v run chunk_upload_example.v
+```
+
+服务器将在 `http://localhost:8080` 启动。
+
+### 3. 访问 Web 界面
+
+打开浏览器访问 `http://localhost:8080` 即可使用 Web 上传界面。
+
+## API 接口文档
+
+### 1. 分片上传接口
+
+**接口地址：** `POST /upload/chunk`
+
+**请求参数：**
+- `file_hash` (string): 文件哈希值
+- `chunk_index` (int): 分片索引，从 0 开始
+- `filename` (string): 原始文件名
+- `file_size` (int): 文件总大小（字节）
+- `chunk_size` (int): 分片大小（字节）
+- `chunk_hash` (string): 分片哈希值
+- `chunk` (file): 分片文件数据
+
+**响应格式：**
+
+上传完成（自动合并）：
+```json
+{
+    "success": true,
+    "all_chunk_uploaded": true,
+    "file_path": ".\\uploads\\files\\xxx.zip",
+    "file_uuid": "xxx-xxx-xxx",
+    "message": "File merged successfully"
+}
+```
+
+上传中：
+```json
+{
+    "success": true,
+    "chunk_index": 1,
+    "all_chunk_uploaded": false,
+    "message": "Chunk uploaded successfully"
+}
+```
+
+### 2. 分片存在检查接口
+
+**接口地址：** `GET /upload/chunk_exists`
+
+**请求参数：**
+- `file_hash` (string): 文件哈希值
+- `chunk_index` (int): 分片索引
+- `chunk_hash` (string): 分片哈希值
+- `file_size` (int): 文件总大小
+- `trunk_size` (int): 分片大小
+
+**响应格式：**
+```json
+{
+    "exists": true,
+    "all_chunk_uploaded": false
+}
+```
+
+### 3. 上传状态查询接口
+
+**接口地址：** `GET /upload/status`
+
+**请求参数：**
+- `file_hash` (string): 文件哈希值
+
+**响应格式：**
+```json
+{
+    "file_hash": "xxx",
+    "filename": "example.zip",
+    "total_chunks": 0,
+    "file_size": 1048576,
+    "chunk_size": 2097152,
+    "uploaded_chunks": [0, 1, 2],
+    "status": "uploading",
+    "created_at": 1640995200,
+    "updated_at": 1640995300
+}
+```
+
+### 4. 已上传分片查询接口
+
+**接口地址：** `GET /upload/chunks`
+
+**请求参数：**
+- `file_hash` (string): 文件哈希值
+
+**响应格式：**
+```json
+{
+    "uploaded_chunks": [0, 1, 2],
+    "total_chunks": 5,
+    "completed": false
+}
+```
+
+### 5. 文件管理接口
+
+#### 获取所有文件
+**接口地址：** `GET /api/files`
+
+#### 根据 UUID 获取文件
+**接口地址：** `GET /api/files/{uuid}`
+
+#### 根据哈希获取文件
+**接口地址：** `GET /api/files/hash/{hash}`
+
+#### 删除文件
+**接口地址：** `DELETE /api/files/{uuid}`
+
+## 配置说明
+
+### ChunkUploadConfig 配置项
+
+```v
+pub struct ChunkUploadConfig {
+    chunk_size: int = 1024 * 1024  // 默认分片大小 1MB
+    max_file_size: int = 1024 * 1024 * 1024  // 最大文件大小 1GB
+    temp_dir: string = './uploads/chunks'  // 临时分片目录
+    upload_dir: string = './uploads/files'  // 最终文件目录
+    cleanup_delay: int = 3600  // 清理延迟时间（秒）
+    clear_chunks_on_complete: bool = false  // 完成后是否清理分片
+    db_path: string = './uploads/files.db'  // 数据库文件路径
+}
+```
+
+## 文件存储结构
+
+```
+uploads/
+├── chunks/                    # 分片文件目录
+│   └── {file_hash}/          # 按文件哈希分组
+│       └── {chunk_size}/     # 按分片大小分组
+│           ├── chunk_0.part  # 分片文件
+│           ├── chunk_1.part
+│           └── ...
+├── files/                    # 最终文件目录
+│   ├── {file_hash}.{ext}    # 合并后的文件
+│   └── ...
+└── files.db                 # SQLite 数据库文件
+```
+
+## 使用示例
+
+### 1. 前端 JavaScript 示例
+
+```javascript
+// 计算文件哈希
+async function calculateFileHash(file) {
+    return new Promise(resolve => {
+        const spark = new SparkMD5.ArrayBuffer();
+        const reader = new FileReader();
+        reader.onload = e => {
+            spark.append(e.target.result);
+            resolve(spark.end());
+        };
+        reader.readAsArrayBuffer(file);
+    });
+}
+
+// 上传分片
+async function uploadChunk(file, chunk, { fileHash, chunkIndex, chunkHash }) {
+    const form = new FormData();
+    form.append('file_hash', fileHash);
+    form.append('chunk_index', chunkIndex);
+    form.append('filename', file.name);
+    form.append('file_size', file.size);
+    form.append('chunk_size', CHUNK_SIZE);
+    form.append('chunk_hash', chunkHash);
+    form.append('chunk', chunk);
+
+    const response = await fetch('/upload/chunk', { 
+        method: 'POST', 
+        body: form 
+    });
+    
+    const result = await response.json();
+    
+    if (result.all_chunk_uploaded) {
+        console.log('上传完成，文件已合并:', result.file_path);
+        return true; // 上传完成
+    }
+    
+    return false; // 继续上传
+}
+
+// 分片上传主函数
+async function uploadFile(file) {
+    const fileHash = await calculateFileHash(file);
+    const chunkSize = 2 * 1024 * 1024; // 2MB
+    const totalChunks = Math.ceil(file.size / chunkSize);
+    
+    for (let i = 0; i < totalChunks; i++) {
+        const chunk = file.slice(i * chunkSize, (i + 1) * chunkSize);
+        const chunkHash = await calculateFileHash(chunk);
+        
+        const completed = await uploadChunk(file, chunk, {
+            fileHash,
+            chunkIndex: i,
+            chunkHash
+        });
+        
+        if (completed) {
+            break; // 上传完成
+        }
+    }
+}
+```
+
+### 2. cURL 示例
+
+```bash
+# 上传分片
+curl -X POST http://localhost:8080/upload/chunk \
+  -F "file_hash=abc123" \
+  -F "chunk_index=0" \
+  -F "filename=large_file.zip" \
+  -F "file_size=10485760" \
+  -F "chunk_size=2097152" \
+  -F "chunk_hash=def456" \
+  -F "chunk=@chunk_0.part"
+
+# 检查分片是否存在
+curl "http://localhost:8080/upload/chunk_exists?file_hash=abc123&chunk_index=0&chunk_hash=def456&file_size=10485760&trunk_size=2097152"
+```
+
+## 核心算法
+
+### 1. 分片合并判断
+
+系统使用以下逻辑判断是否所有分片都已上传：
+
+```v
+// 计算理论上需要的分片数量
+expected_chunks := (expected_file_size + u64(chunk_size) - 1) / u64(chunk_size)
+
+// 只有当分片数量达到预期且总大小 >= 文件大小时，才认为上传完成
+if chunk_count >= int(expected_chunks) && total_chunk_size >= expected_file_size {
+    all_chunk_uploaded = true
+}
+```
+
+### 2. 文件去重机制
+
+- 基于文件哈希进行去重
+- 相同哈希的文件只存储一份
+- 支持同一文件的不同文件名
+
+### 3. 秒传检测
+
+- 前端计算文件哈希
+- 后端检查文件是否已存在
+- 如果存在则直接返回文件信息，无需上传
+
+## 性能优化
+
+### 1. 内存管理
+
+- 分片文件存储在磁盘，不占用大量内存
+- 上传状态使用内存缓存，提高查询速度
+- 支持配置清理策略，自动清理临时文件
+
+### 2. 并发处理
+
+- 支持多用户同时上传
+- 分片级别的并发控制
+- 文件级别的锁机制
+
+### 3. 错误处理
+
+- 网络异常自动重试
+- 分片损坏自动重新上传
+- 完整的错误日志记录
+
+## 监控和日志
+
+### 1. 调试日志
+
+系统提供详细的调试日志，包括：
+- 分片上传状态
+- 文件合并过程
+- 错误信息追踪
+
+### 2. 性能监控
+
+- 上传速度统计
+- 分片成功率
+- 系统资源使用情况
+
+## 故障排除
+
+### 1. 常见问题
+
+**Q: 上传大文件时出现内存不足**
+A: 检查分片大小配置，建议设置为 1-5MB
+
+**Q: 分片上传后文件合并失败**
+A: 检查磁盘空间和文件权限
+
+**Q: 秒传功能不工作**
+A: 确认前端哈希算法与后端一致
+
+### 2. 日志分析
+
+查看服务器日志获取详细错误信息：
+```bash
+# 启动时查看详细日志
+v run chunk_upload_example.v
+```
+
+## 扩展功能
+
+### 1. 云存储集成
+
+可以扩展支持：
+- AWS S3
+- 阿里云 OSS
+- 腾讯云 COS
+
+### 2. 文件处理
+
+可以添加：
+- 图片压缩
+- 视频转码
+- 文档预览
+
+### 3. 权限控制
+
+可以集成：
+- 用户认证
+- 文件权限
+- 访问控制
+
+## 贡献指南
+
+欢迎提交 Issue 和 Pull Request 来改进这个项目。
+
+## 许可证
+
+本项目采用 MIT 许可证。 

README_DATABASE.md

@@ -0,0 +1,166 @@
+# V-Hono 文件上传系统 - 数据库集成
+
+## 概述
+
+V-Hono 文件上传系统现在集成了 SQLite 数据库来管理文件信息，支持文件去重、版本管理和元数据存储。
+
+## 新功能
+
+### 1. 文件路径格式更新
+
+合并后的文件现在使用新的命名格式：
+```
+./uploads/files/{filehash}.{filetype}
+```
+
+例如：
+- `./uploads/files/a1b2c3d4e5f6.txt`
+- `./uploads/files/1234567890abcdef.jpg`
+
+### 2. 数据库表结构
+
+```sql
+CREATE TABLE file_info (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    file_uuid TEXT UNIQUE NOT NULL,      -- 文件唯一标识符
+    file_hash TEXT NOT NULL,             -- 文件哈希值
+    file_name TEXT NOT NULL,             -- 原始文件名
+    file_size INTEGER NOT NULL,          -- 文件大小
+    file_type TEXT NOT NULL,             -- 文件扩展名
+    created_at INTEGER NOT NULL,         -- 创建时间
+    updated_at INTEGER NOT NULL          -- 更新时间
+);
+```
+
+### 3. 文件去重逻辑
+
+- **相同 hash + 相同文件名**：更新现有记录
+- **相同 hash + 不同文件名**：创建新记录（支持同一文件的不同名称）
+- **不同 hash**：创建新记录
+
+### 4. 新增 API 端点
+
+#### 获取所有文件信息
+```http
+GET /api/files
+```
+
+#### 根据文件UUID获取文件信息
+```http
+GET /api/files/{uuid}
+```
+
+#### 根据文件hash获取文件信息
+```http
+GET /api/files/hash/{hash}
+```
+
+#### 删除文件信息
+```http
+DELETE /api/files/{uuid}
+```
+
+## 配置
+
+在 `ChunkUploadConfig` 中添加了数据库配置：
+
+```v
+pub struct ChunkUploadConfig {
+    // ... 其他配置
+    db_path string = './uploads/files.db'  // 数据库文件路径
+}
+```
+
+## 使用示例
+
+### 1. 启动服务器
+
+```bash
+v run chunk_upload_example.v
+```
+
+### 2. 测试数据库功能
+
+```bash
+v run test_database.v
+```
+
+### 3. 上传文件
+
+文件上传完成后，系统会：
+1. 将文件保存为 `{filehash}.{filetype}` 格式
+2. 在数据库中记录文件信息
+3. 返回文件UUID
+
+### 4. 查询文件信息
+
+```bash
+# 获取所有文件
+curl http://localhost:8080/api/files
+
+# 根据UUID获取文件信息
+curl http://localhost:8080/api/files/{uuid}
+
+# 根据hash获取文件信息
+curl http://localhost:8080/api/files/hash/{hash}
+```
+
+## 数据库操作
+
+### 插入或更新文件信息
+
+```v
+file_info := db.insert_or_update_file(file_hash, file_name, file_size, file_type)
+```
+
+### 查询文件信息
+
+```v
+// 根据hash查询
+file_info := db.get_file_by_hash(file_hash)
+
+// 根据UUID查询
+file_info := db.get_file_by_uuid(file_uuid)
+
+// 获取所有文件
+files := db.get_all_files()
+```
+
+### 删除文件信息
+
+```v
+db.delete_file(file_uuid)
+```
+
+## 依赖
+
+项目现在依赖 `vlang/sqlite` 模块：
+
+```v
+// v.mod
+dependencies: ['vlang/sqlite']
+```
+
+## 文件结构
+
+```
+v-hono/
+├── hono/
+│   ├── database.v          # 数据库管理模块
+│   ├── upload.v            # 上传模块（已更新）
+│   └── ...
+├── chunk_upload_example.v  # 示例应用（已更新）
+├── test_database.v         # 数据库测试
+└── uploads/
+    ├── files/              # 最终文件目录
+    ├── chunks/             # 分片文件目录
+    └── files.db            # SQLite数据库文件
+```
+
+## 注意事项
+
+1. 数据库文件会自动创建在 `uploads/` 目录下
+2. 文件去重基于文件hash，支持同一文件的不同名称
+3. 每个文件都有唯一的UUID，用于API访问
+4. 文件路径使用hash命名，避免文件名冲突
+5. 数据库操作失败不会影响文件上传功能 

chunk_upload_example.v

@@ -0,0 +1,264 @@
+module main
+
+import hono
+import net.http
+import os
+import json
+
+fn main() {
+	mut app := hono.Hono.new()
+
+	// 创建分片上传管理器
+	mut upload_manager := hono.new_chunk_upload_manager(hono.ChunkUploadConfig{})
+
+	// 分片上传接口
+	app.post('/upload/chunk', fn [mut upload_manager] (mut c hono.Context) http.Response {
+		return upload_manager.handle_chunk_upload(mut c)
+	})
+
+
+	// 查询上传状态接口
+	app.get('/upload/status', fn [mut upload_manager] (mut c hono.Context) http.Response {
+		return upload_manager.get_upload_status(mut c)
+	})
+
+	// 查询已上传分片接口
+	app.get('/upload/chunks', fn [mut upload_manager] (mut c hono.Context) http.Response {
+		file_hash := c.query['file_hash'] or {
+			c.status(400)
+			return c.json('{"error": "Missing file_hash parameter"}')
+		}
+		upload_status := upload_manager.uploads[file_hash] or {
+			// 如果内存中没有记录，检查是否有最终文件（已完成上传）
+			final_path := './uploads/${file_hash.trim_space()}'
+			if os.exists(final_path) {
+				// 文件已存在，返回所有分片已上传
+				mut uploaded_chunks := []int{}
+				uploaded_chunks << 0 // 假设只有一个分片
+				return c.json('{"uploaded_chunks": ' + json.encode(uploaded_chunks) + ', "total_chunks": 1, "completed": true}')
+			}
+			c.status(404)
+			return c.json('{"error": "Upload not found"}')
+		}
+		
+		// 检查是否所有分片都已上传（基于分片大小总和）
+		chunk_dir := os.join_path(os.join_path('./uploads/chunks', file_hash.trim_space()), upload_status.chunk_size.str())
+		mut total_chunk_size := u64(0)
+		mut chunk_count := 0
+		
+		if os.exists(chunk_dir) {
+			for i := 0; ; i++ {
+				chunk_path := os.join_path(chunk_dir, 'chunk_${i}.part')
+				if !os.exists(chunk_path) {
+					break
+				}
+				chunk_info := os.stat(chunk_path) or { continue }
+				total_chunk_size += chunk_info.size
+				chunk_count++
+			}
+		}
+		
+		is_completed := total_chunk_size >= u64(upload_status.file_size)
+		
+		return c.json('{"uploaded_chunks": ' + json.encode(upload_status.uploaded_chunks) + ', "total_chunks": $chunk_count, "completed": $is_completed}')
+	})
+
+	// 检查分片是否存在接口（秒传功能）
+	app.get('/upload/chunk_exists', fn [mut upload_manager] (mut c hono.Context) http.Response {
+		file_hash := c.query['file_hash'] or {
+			c.status(400)
+			return c.json('{"error": "Missing file_hash parameter"}')
+		}
+		chunk_index := c.query['chunk_index'] or {
+			c.status(400)
+			return c.json('{"error": "Missing chunk_index parameter"}')
+		}
+		chunk_hash := c.query['chunk_hash'] or {
+			c.status(400)
+			return c.json('{"error": "Missing chunk_hash parameter"}')
+		}
+		file_size_str := c.query['file_size'] or {
+			c.status(400)
+			return c.json('{"error": "Missing file_size parameter"}')
+		}
+		file_size := file_size_str.int()
+
+		// 新增 trunk_size 参数
+		trunk_size_str := c.query['trunk_size'] or { '' }
+		mut chunk_size := upload_manager.config.chunk_size
+		if trunk_size_str != '' {
+			chunk_size = trunk_size_str.int()
+		} else if upload_status := upload_manager.uploads[file_hash] {
+			chunk_size = upload_status.chunk_size
+		}
+
+		chunk_path := os.join_path(os.join_path(os.join_path('./uploads/chunks', file_hash.trim_space()), chunk_size.str()), 'chunk_${chunk_index}.part')
+		println('[DEBUG] Checking chunk: $chunk_path')
+		println('[DEBUG] File hash: $file_hash')
+		println('[DEBUG] Chunk index: $chunk_index')
+		println('[DEBUG] Expected hash: $chunk_hash')
+		
+		// 清理无效的上传状态
+		upload_manager.cleanup_invalid_status()
+		
+		mut exists := os.exists(chunk_path)
+		println('[DEBUG] File exists: $exists')
+		
+		// 计算是否所有分片都已上传
+		mut all_chunk_uploaded := false
+		
+		// 方案1：优先检查最终文件是否存在（新格式：filehash.filetype）
+		uploads_dir := './uploads/files'
+		if os.exists(uploads_dir) {
+			// 从上传状态中获取文件扩展名
+			mut file_ext := ''
+			if upload_status := upload_manager.uploads[file_hash] {
+				file_ext = get_file_extension(upload_status.filename)
+			}
+			
+			// 如果内存中没有记录，尝试从数据库获取
+			if file_ext == '' {
+				if file_info := upload_manager.db.get_file_by_hash(file_hash) {
+					file_ext = file_info.file_type
+				}
+			}
+			
+			// 构建最终文件名
+			final_filename := '${file_hash.trim_space()}${file_ext}'
+			final_path := os.join_path(uploads_dir, final_filename)
+			
+			if os.exists(final_path) {
+				println('[DEBUG] Found final file: $final_path')
+				all_chunk_uploaded = true
+			}
+		}
+		
+		// 方案2：如果最终文件不存在，检查分片文件
+		if !all_chunk_uploaded {
+			chunk_dir := os.join_path(os.join_path('./uploads/chunks', file_hash.trim_space()), chunk_size.str())
+			if os.exists(chunk_dir) {
+				// 计算所有分片文件的大小总和
+				mut total_chunk_size := u64(0)
+				mut chunk_count := 0
+				// 遍历所有分片文件
+				for i := 0; ; i++ {
+					chunk_file_path := '${chunk_dir}/chunk_${i}.part'
+					if !os.exists(chunk_file_path) {
+						break
+					}
+					// 获取分片文件大小
+					chunk_info := os.stat(chunk_file_path) or { break }
+					total_chunk_size += chunk_info.size
+					chunk_count++
+				}
+				// 使用传入的文件大小
+				expected_file_size := u64(file_size)
+				println('[DEBUG] Total chunk size: $total_chunk_size, Expected file size: $expected_file_size, Chunk count: $chunk_count')
+				
+				// 计算理论上需要的分片数量
+				expected_chunks := (expected_file_size + u64(chunk_size) - 1) / u64(chunk_size)
+				println('[DEBUG] Expected chunks: $expected_chunks')
+				
+				// 只有当分片数量达到预期且总大小 >= 文件大小时，才认为上传完成
+				if chunk_count >= int(expected_chunks) && total_chunk_size >= expected_file_size {
+					all_chunk_uploaded = true
+					println('[DEBUG] All chunks uploaded: chunk_count=$chunk_count >= expected_chunks=$expected_chunks && total_size=$total_chunk_size >= file_size=$expected_file_size')
+				} else {
+					println('[DEBUG] Not all chunks uploaded: chunk_count=$chunk_count < expected_chunks=$expected_chunks || total_size=$total_chunk_size < file_size=$expected_file_size')
+				}
+			}
+		}
+		
+		println('[DEBUG] All chunk uploaded: $all_chunk_uploaded')
+		
+		// chunk_exists 接口不应该自动触发合并，只返回状态信息
+		// 合并操作应该在 /upload/chunk 接口中处理
+		
+		// 只检查文件是否存在，不验证 hash（因为前后端 hash 算法可能不一致）
+		// 如果需要严格验证，可以在这里添加 hash 检查逻辑
+		
+		return c.json('{"exists": $exists, "all_chunk_uploaded": $all_chunk_uploaded}')
+	})
+
+	// 获取所有文件信息
+	app.get('/api/files', fn [mut upload_manager] (mut c hono.Context) http.Response {
+		files := upload_manager.db.get_all_files() or {
+			c.status(500)
+			return c.json('{"error": "Failed to get files", "message": "$err"}')
+		}
+		return c.json(json.encode(files))
+	})
+
+	// 根据文件UUID获取文件信息
+	app.get('/api/files/:uuid', fn [mut upload_manager] (mut c hono.Context) http.Response {
+		file_uuid := c.params['uuid'] or {
+			c.status(400)
+			return c.json('{"error": "Missing file UUID"}')
+		}
+		
+		file_info := upload_manager.db.get_file_by_uuid(file_uuid) or {
+			c.status(404)
+			return c.json('{"error": "File not found"}')
+		}
+		
+		return c.json(json.encode(file_info))
+	})
+
+	// 根据文件hash获取文件信息
+	app.get('/api/files/hash/:hash', fn [mut upload_manager] (mut c hono.Context) http.Response {
+		file_hash := c.params['hash'] or {
+			c.status(400)
+			return c.json('{"error": "Missing file hash"}')
+		}
+		
+		file_info := upload_manager.db.get_file_by_hash(file_hash) or {
+			c.status(404)
+			return c.json('{"error": "File not found"}')
+		}
+		
+		return c.json(json.encode(file_info))
+	})
+
+	// 删除文件信息
+	app.delete('/api/files/:uuid', fn [mut upload_manager] (mut c hono.Context) http.Response {
+		file_uuid := c.params['uuid'] or {
+			c.status(400)
+			return c.json('{"error": "Missing file UUID"}')
+		}
+		
+		upload_manager.db.delete_file(file_uuid) or {
+			c.status(500)
+			return c.json('{"error": "Failed to delete file", "message": "$err"}')
+		}
+		
+		return c.json('{"success": true, "message": "File deleted successfully"}')
+	})
+
+	// 静态文件服务
+	app.use(hono.serve_static_path('/files', './uploads'))
+
+	// HTML 示例页面
+	app.get('/', fn (mut c hono.Context) http.Response {
+		html_content := os.read_file('public/upload.html') or {
+			return c.text('Error: Cannot read upload.html file')
+		}
+		return c.html(html_content)
+	})
+
+	println('Chunk upload server running at http://localhost:8080')
+	app.listen(':8080')
+}
+
+// 获取文件扩展名
+fn get_file_extension(filename string) string {
+	println('[DEBUG] Getting extension for filename: "$filename"')
+	parts := filename.split('.')
+	println('[DEBUG] Split parts: $parts')
+	if parts.len > 1 {
+		ext := '.${parts.last()}'
+		println('[DEBUG] Extracted extension: "$ext"')
+		return ext
+	}
+	println('[DEBUG] No extension found, returning empty string')
+	return ''
+} 

hono/database.v

@@ -0,0 +1,212 @@
+module hono
+
+import db.sqlite
+import time
+import crypto.rand
+
+// 文件信息结构
+pub struct FileInfo {
+pub:
+	file_uuid    string
+	file_hash    string
+	file_name    string
+	file_size    int
+	file_type    string
+	created_at   int
+	updated_at   int
+}
+
+// 数据库管理器
+pub struct DatabaseManager {
+mut:
+	db sqlite.DB
+}
+
+// 创建数据库管理器
+pub fn new_database_manager(db_path string) !DatabaseManager {
+	mut db := sqlite.connect(db_path) or {
+		return error('Failed to connect to database: $err')
+	}
+	
+	// 创建文件信息表
+	db.exec('CREATE TABLE IF NOT EXISTS file_info (
+		id INTEGER PRIMARY KEY AUTOINCREMENT,
+		file_uuid TEXT UNIQUE NOT NULL,
+		file_hash TEXT NOT NULL,
+		file_name TEXT NOT NULL,
+		file_size INTEGER NOT NULL,
+		file_type TEXT NOT NULL,
+		created_at INTEGER NOT NULL,
+		updated_at INTEGER NOT NULL
+	);') or {
+		return error('Failed to create table: $err')
+	}
+	db.exec('CREATE INDEX IF NOT EXISTS idx_file_hash ON file_info(file_hash);') or {
+		return error('Failed to create index: $err')
+	}
+	db.exec('CREATE INDEX IF NOT EXISTS idx_file_uuid ON file_info(file_uuid);') or {
+		return error('Failed to create index: $err')
+	}
+	
+	return DatabaseManager{
+		db: db
+	}
+}
+
+// 生成文件UUID
+pub fn generate_file_uuid() string {
+	// 生成16字节的随机数据
+	random_bytes := rand.bytes(16) or { return '' }
+	
+	// 转换为UUID格式 (8-4-4-4-12)
+	mut uuid := ''
+	for i, byte in random_bytes {
+		if i == 4 || i == 6 || i == 8 || i == 10 {
+			uuid += '-'
+		}
+		uuid += '${byte:02x}'
+	}
+	
+	return uuid
+}
+
+// 插入或更新文件信息
+pub fn (mut db DatabaseManager) insert_or_update_file(file_hash string, file_name string, file_size int, file_type string) !FileInfo {
+	now := int(time.now().unix())
+	
+	// 检查是否已存在相同的file_hash
+	existing_file := db.get_file_by_hash(file_hash) or { FileInfo{} }
+	
+	if existing_file.file_uuid != '' {
+		// 如果存在相同的file_hash但文件名不同，创建新记录
+		if existing_file.file_name != file_name {
+			// 生成新的UUID
+			file_uuid := generate_file_uuid()
+			
+			// 插入新记录
+			db.db.exec('INSERT INTO file_info (file_uuid, file_hash, file_name, file_size, file_type, created_at, updated_at) VALUES ("$file_uuid", "$file_hash", "$file_name", $file_size, "$file_type", $now, $now)') or {
+				return error('Failed to insert file info: $err')
+			}
+			
+			return FileInfo{
+				file_uuid: file_uuid
+				file_hash: file_hash
+				file_name: file_name
+				file_size: file_size
+				file_type: file_type
+				created_at: now
+				updated_at: now
+			}
+		} else {
+			// 文件名相同，更新现有记录
+			db.db.exec('UPDATE file_info SET file_size = $file_size, file_type = "$file_type", updated_at = $now WHERE file_hash = "$file_hash"') or {
+				return error('Failed to update file info: $err')
+			}
+			
+			return FileInfo{
+				file_uuid: existing_file.file_uuid
+				file_hash: file_hash
+				file_name: file_name
+				file_size: file_size
+				file_type: file_type
+				created_at: existing_file.created_at
+				updated_at: now
+			}
+		}
+	} else {
+		// 不存在相同的file_hash，创建新记录
+		file_uuid := generate_file_uuid()
+		
+		db.db.exec('INSERT INTO file_info (file_uuid, file_hash, file_name, file_size, file_type, created_at, updated_at) VALUES ("$file_uuid", "$file_hash", "$file_name", $file_size, "$file_type", $now, $now)') or {
+			return error('Failed to insert file info: $err')
+		}
+		
+		return FileInfo{
+			file_uuid: file_uuid
+			file_hash: file_hash
+			file_name: file_name
+			file_size: file_size
+			file_type: file_type
+			created_at: now
+			updated_at: now
+		}
+	}
+}
+
+// 根据文件hash获取文件信息
+pub fn (db DatabaseManager) get_file_by_hash(file_hash string) !FileInfo {
+	rows := db.db.exec('SELECT file_uuid, file_hash, file_name, file_size, file_type, created_at, updated_at FROM file_info WHERE file_hash = "$file_hash"') or {
+		return error('Failed to query file info: $err')
+	}
+	
+	if rows.len > 0 {
+		row := rows[0]
+		return FileInfo{
+			file_uuid: row.vals[0]
+			file_hash: row.vals[1]
+			file_name: row.vals[2]
+			file_size: row.vals[3].int()
+			file_type: row.vals[4]
+			created_at: row.vals[5].int()
+			updated_at: row.vals[6].int()
+		}
+	}
+	
+	return error('File not found')
+}
+
+// 根据文件UUID获取文件信息
+pub fn (db DatabaseManager) get_file_by_uuid(file_uuid string) !FileInfo {
+	rows := db.db.exec('SELECT file_uuid, file_hash, file_name, file_size, file_type, created_at, updated_at FROM file_info WHERE file_uuid = "$file_uuid"') or {
+		return error('Failed to query file info: $err')
+	}
+	
+	if rows.len > 0 {
+		row := rows[0]
+		return FileInfo{
+			file_uuid: row.vals[0]
+			file_hash: row.vals[1]
+			file_name: row.vals[2]
+			file_size: row.vals[3].int()
+			file_type: row.vals[4]
+			created_at: row.vals[5].int()
+			updated_at: row.vals[6].int()
+		}
+	}
+	
+	return error('File not found')
+}
+
+// 获取所有文件信息
+pub fn (db DatabaseManager) get_all_files() ![]FileInfo {
+	rows := db.db.exec('SELECT file_uuid, file_hash, file_name, file_size, file_type, created_at, updated_at FROM file_info ORDER BY created_at DESC') or {
+		return error('Failed to query all files: $err')
+	}
+	
+	mut files := []FileInfo{}
+	for row in rows {
+		files << FileInfo{
+			file_uuid: row.vals[0]
+			file_hash: row.vals[1]
+			file_name: row.vals[2]
+			file_size: row.vals[3].int()
+			file_type: row.vals[4]
+			created_at: row.vals[5].int()
+			updated_at: row.vals[6].int()
+		}
+	}
+	
+	return files
+}
+
+// 删除文件信息
+pub fn (mut db DatabaseManager) delete_file(file_uuid string) ! {
+	db.db.exec('DELETE FROM file_info WHERE file_uuid = "$file_uuid"') or {
+		return error('Failed to delete file info: $err')
+	}
+}
+
+// 关闭数据库连接
+pub fn (mut db DatabaseManager) close() {
+	db.db.close() or { }
+} 

hono/json_parser.v

@@ -0,0 +1,154 @@
+module hono
+
+// 简单的 JSON 解析器
+pub struct JsonParser {
+pub:
+	data string
+}
+
+// 创建 JSON 解析器
+pub fn new_json_parser(data string) JsonParser {
+	return JsonParser{data: data}
+}
+
+// 解析 JSON 对象
+pub fn (parser JsonParser) parse_object() !map[string]string {
+	mut result := map[string]string{}
+	
+	// 移除外层的大括号
+	data := parser.data.trim_space()
+	if !data.starts_with('{') || !data.ends_with('}') {
+		return error('Invalid JSON object format')
+	}
+	
+	content := data[1..data.len - 1]
+	
+	// 分割键值对
+	pairs := split_json_pairs(content)
+	
+	for pair in pairs {
+		key_value := split_key_value(pair) or { continue }
+		result[key_value.key] = key_value.value
+	}
+	
+	return result
+}
+
+// 键值对结构
+struct KeyValue {
+pub:
+	key   string
+	value string
+}
+
+// 分割 JSON 键值对
+fn split_json_pairs(content string) []string {
+	mut pairs := []string{}
+	mut current := ''
+	mut brace_count := 0
+	mut in_string := false
+	mut escape_next := false
+	
+	for i := 0; i < content.len; i++ {
+		ch := content[i]
+		
+		if escape_next {
+			current += ch.str()
+			escape_next = false
+			continue
+		}
+		
+		if ch == `\\` {
+			escape_next = true
+			current += ch.str()
+			continue
+		}
+		
+		if ch == `"` && !escape_next {
+			in_string = !in_string
+			current += ch.str()
+			continue
+		}
+		
+		if !in_string {
+			if ch == `{` {
+				brace_count++
+			} else if ch == `}` {
+				brace_count--
+			} else if ch == `,` && brace_count == 0 {
+				pairs << current.trim_space()
+				current = ''
+				continue
+			}
+		}
+		
+		current += ch.str()
+	}
+	
+	if current.trim_space() != '' {
+		pairs << current.trim_space()
+	}
+	
+	return pairs
+}
+
+// 分割键值对
+fn split_key_value(pair string) !KeyValue {
+	colon_index := pair.index(':') or {
+		return error('No colon found')
+	}
+	mut key := pair[..colon_index].trim_space()
+	mut value := pair[colon_index + 1..].trim_space()
+	
+	// 移除键的引号
+	if key.starts_with('"') && key.ends_with('"') {
+		key = key[1..key.len - 1]
+	}
+	
+	// 移除值的引号
+	if value.starts_with('"') && value.ends_with('"') {
+		value = value[1..value.len - 1]
+	}
+	
+	return KeyValue{key: key, value: value}
+}
+
+pub struct MergeRequest {
+	pub:
+	file_hash    string
+	filename     string
+	total_chunks int
+}
+
+// 解析合并请求
+pub fn parse_merge_request(body string) !MergeRequest {
+	if body.len == 0 {
+		return error('Empty request body')
+	}
+	
+	parser := new_json_parser(body)
+	obj := parser.parse_object() or {
+		return error('Failed to parse JSON')
+	}
+	
+	file_hash := obj['file_hash'] or {
+		return error('Missing file_hash')
+	}
+	filename := obj['filename'] or {
+		return error('Missing filename')
+	}
+	total_chunks_str := obj['total_chunks'] or {
+		return error('Missing total_chunks')
+	}
+	
+	if !total_chunks_str.is_int() {
+		return error('Invalid total_chunks')
+	}
+	total_chunks := total_chunks_str.int()
+	
+	return MergeRequest{
+		file_hash: file_hash
+		filename: filename
+		total_chunks: total_chunks
+	}
+} 

hono/multipart.v

@@ -0,0 +1,171 @@
+module hono
+
+import net.http
+
+// Multipart 表单数据项
+pub struct MultipartItem {
+pub:
+	name     string
+	filename string
+	content  string
+	content_type string
+}
+
+// Multipart 解析器
+pub struct MultipartParser {
+pub:
+	boundary string
+	data     string
+}
+
+// 创建 Multipart 解析器
+pub fn new_multipart_parser(content_type string, data string) !MultipartParser {
+	// 从 Content-Type 中提取 boundary
+	boundary := extract_boundary(content_type) or {
+		return error('Failed to extract boundary')
+	}
+	
+	return MultipartParser{
+		boundary: boundary
+		data: data
+	}
+}
+
+// 解析 multipart 数据
+pub fn (parser MultipartParser) parse() ![]MultipartItem {
+	mut items := []MultipartItem{}
+	// 更健壮的分割方式，兼容不同换行
+	parts := parser.data.split('--${parser.boundary}')
+	for _, part in parts {
+		if part.trim_space() == '' || part.trim_space() == '--' || part.trim_space().starts_with('--') {
+			continue
+		}
+		item := parser.parse_part(part) or { 
+			continue 
+		}
+		items << item
+	}
+	return items
+}
+
+// 解析单个部分
+fn (parser MultipartParser) parse_part(part string) !MultipartItem {
+	// 分离头部和内容
+	header_content := part.split('\r\n\r\n')
+	if header_content.len < 2 {
+		return error('Invalid part format')
+	}
+	
+	header := header_content[0]
+	content := header_content[1..].join('\r\n\r\n')
+	
+	// 解析头部
+	name := extract_header_value(header, 'name') or {
+		return error('Missing name')
+	}
+	filename := extract_header_value(header, 'filename') or { '' }
+	content_type := extract_header_value(header, 'Content-Type') or { 'text/plain' }
+	
+	return MultipartItem{
+		name: name
+		filename: filename
+		content: content
+		content_type: content_type
+	}
+}
+
+// 从 Content-Type 中提取 boundary
+fn extract_boundary(content_type string) !string {
+	if !content_type.starts_with('multipart/form-data') {
+		return error('Not multipart/form-data')
+	}
+	
+	boundary_start := content_type.index('boundary=') or {
+		return error('No boundary found')
+	}
+	mut boundary := content_type[boundary_start + 9..]
+	
+	// 移除引号
+	if boundary.starts_with('"') && boundary.ends_with('"') {
+		boundary = boundary[1..boundary.len - 1]
+	}
+	
+	return boundary
+}
+
+// 从头部中提取值
+fn extract_header_value(header string, key string) !string {
+    // 先找 Content-Disposition 行
+    for line in header.split('\r\n') {
+        if line.starts_with('Content-Disposition:') {
+            // 查找 key="value"
+            key_eq := '${key}="'
+            idx := line.index(key_eq) or { continue }
+            start := idx + key_eq.len
+            end := line.index_after('"', start) or { line.len }
+            return line[start..end]
+        }
+    }
+    return error('Key not found: $key')
+}
+
+// 解析 multipart 表单数据（便捷函数）
+pub fn parse_multipart_form(req http.Request) !map[string]MultipartItem {
+	content_type := req.header.get_custom('Content-Type') or {
+		return error('No Content-Type header')
+	}
+	
+	parser := new_multipart_parser(content_type, req.data) or {
+		return error('Failed to create parser: $err')
+	}
+	
+	items := parser.parse() or {
+		return error('Failed to parse multipart data: $err')
+	}
+	
+	// 转换为 map
+	mut result := map[string]MultipartItem{}
+	for item in items {
+		result[item.name] = item
+	}
+	
+	return result
+}
+
+// 获取文件数据
+pub fn (items map[string]MultipartItem) get_file(key string) !string {
+	item := items[key] or {
+		return error('File not found: $key')
+	}
+	return item.content
+}
+
+// 获取表单字段值
+pub fn (items map[string]MultipartItem) get(key string) !string {
+	item := items[key] or {
+		return error('Field not found: $key')
+	}
+	return item.content
+}
+
+// 检查是否为文件
+pub fn (items map[string]MultipartItem) is_file(key string) bool {
+	item := items[key] or { return false }
+	return item.filename != ''
+}
+
+// 获取文件名
+pub fn (items map[string]MultipartItem) get_filename(key string) !string {
+	item := items[key] or {
+		return error('Item not found: $key')
+	}
+	return item.filename
+}
+
+// 获取内容类型
+pub fn (items map[string]MultipartItem) get_content_type(key string) !string {
+	item := items[key] or {
+		return error('Item not found: $key')
+	}
+	return item.content_type
+} 

hono/request.v

@@ -187,12 +187,12 @@ pub fn (mut c Context) file_with_options(file_path string, options FileOptions)
 // FileOptions struct for configuring file serving
 pub struct FileOptions {
 pub:
-	status_code    int = 0              // 自定义状态码，0表示使用默认200
-	content_type   string = ''          // 自定义Content-Type
+	status_code    int              // 自定义状态码，0表示使用默认200
+	content_type   string          // 自定义Content-Type
 	last_modified  bool = true          // 是否设置Last-Modified头
 	etag          bool = true           // 是否设置ETag头
-	max_age       int = 0               // 缓存时间（秒）
-	no_cache      bool = false          // 是否禁用缓存
+	max_age       int               // 缓存时间（秒）
+	no_cache      bool          // 是否禁用缓存
 	headers       map[string]string     // 自定义响应头
 }
 

hono/router.v

@@ -1,7 +1,6 @@
 module hono
 
 import regex
-import time
 
 // 路由节点类型
 enum RouteType {
@@ -142,7 +141,7 @@ fn (mut router ContextHybridRouter) match_dynamic_route(method string, path stri
 	}
 	
 	for handler in router.dynamic_routes {
-		match_result, replaced_path_reg, param_names := router.match_path_with_regex(path, handler.path)
+		match_result, replaced_path_reg, _ := router.match_path_with_regex(path, handler.path)
 		if match_result {
 			mut param_map := map[string]string{}
 			

hono/static.v

@@ -2,7 +2,6 @@ module hono
 
 import os
 import net.http
-import net.urllib
 
 // 静态文件服务配置
 pub struct StaticOptions {

hono/trie_router.v

@@ -52,7 +52,7 @@ pub fn (mut tr ContextTrieRouter) add_route(method string, path string, handler
 	}
 	
 	segments := path.split('/').filter(it != '')
-	mut current := tr.method_trees[method]
+	mut current := tr.method_trees[method] or { return }
 	
 	for i, seg in segments {
 		if seg.starts_with(':') {
@@ -72,7 +72,7 @@ pub fn (mut tr ContextTrieRouter) add_route(method string, path string, handler
 			if seg !in current.children {
 				current.children[seg] = ContextTrieNode.new(seg, TrieNodeType.static, '')
 			}
-			current = current.children[seg]
+			current = current.children[seg] or { return }
 		}
 		
 		// 在最后一个节点设置处理器
@@ -94,13 +94,13 @@ pub fn (mut tr ContextTrieRouter) match_route(method string, path string) ?Conte
 	}
 	
 	segments := path.split('/').filter(it != '')
-	mut current := tr.method_trees[method]
+	mut current := tr.method_trees[method] or { return none }
 	mut params := map[string]string{}
 	
 	for seg in segments {
 		// 先尝试静态匹配
 		if seg in current.children {
-			current = current.children[seg]
+			current = current.children[seg] or { return none }
 		} else if current.param_child != unsafe { nil } {
 			// 参数匹配
 			params[current.param_child.param_name] = seg

hono/upload.v

@@ -0,0 +1,498 @@
+module hono
+
+import net.http
+import os
+import crypto.md5
+import json
+import time
+
+// 分片上传配置
+pub struct ChunkUploadConfig {
+pub:
+	chunk_size     int = 1024 * 1024  // 1MB 默认分片大小
+	max_file_size  int = 1024 * 1024 * 1024  // 1GB 最大文件大小
+	temp_dir       string = './uploads/chunks'  // 临时分片目录（分片保存在 temp_dir/filehash/chunksize/ 下）
+	upload_dir     string = './uploads/files'  // 最终文件目录
+	cleanup_delay  int = 3600  // 1小时后清理临时文件
+	clear_chunks_on_complete bool // 上传完成后是否清空分片，默认不清空
+	db_path        string = './uploads/files.db'  // 数据库文件路径
+}
+
+// 分片信息
+pub struct ChunkInfo {
+pub:
+	file_hash    string
+	chunk_index  int
+	total_chunks int
+	filename     string
+	file_size    int
+	chunk_size   int
+	upload_time  int
+}
+
+// 文件上传状态
+pub struct FileUploadStatus {
+pub:
+	file_hash    string
+	filename     string
+	total_chunks int
+	file_size    int
+	chunk_size   int
+	created_at   int
+pub mut:
+	uploaded_chunks []int
+	status       string
+	updated_at   int
+}
+
+// 分片上传管理器
+pub struct ChunkUploadManager {
+pub mut:
+	config ChunkUploadConfig
+	uploads map[string]FileUploadStatus
+	db      DatabaseManager
+}
+
+// 创建分片上传管理器
+pub fn new_chunk_upload_manager(config ChunkUploadConfig) ChunkUploadManager {
+	// 确保目录存在
+	os.mkdir_all(config.temp_dir) or { panic('Failed to create temp directory') }
+	os.mkdir_all(config.upload_dir) or { panic('Failed to create upload directory') }
+	
+	// 创建数据库管理器
+	db := new_database_manager(config.db_path) or { panic('Failed to create database manager: $err') }
+	
+	return ChunkUploadManager{
+		config: config
+		uploads: map[string]FileUploadStatus{}
+		db: db
+	}
+}
+
+// 处理分片上传
+pub fn (mut manager ChunkUploadManager) handle_chunk_upload(mut ctx Context) http.Response {
+	// 解析 multipart 表单数据
+	form_data := hono.parse_multipart_form(ctx.req) or {
+		ctx.status(400)
+		return ctx.json('{"error": "Invalid form data", "message": "$err"}')
+	}
+	
+	// 获取必要参数
+	file_hash := form_data.get('file_hash') or {
+		ctx.status(400)
+		return ctx.json('{"error": "Missing file_hash"}')
+	}
+	
+	chunk_index_str := form_data.get('chunk_index') or {
+		ctx.status(400)
+		return ctx.json('{"error": "Missing chunk_index"}')
+	}
+	
+	filename := form_data.get('filename') or {
+		ctx.status(400)
+		return ctx.json('{"error": "Missing filename"}')
+	}
+	
+	file_size_str := form_data.get('file_size') or {
+		ctx.status(400)
+		return ctx.json('{"error": "Missing file_size"}')
+	}
+	
+	// 解析数值
+	chunk_index := chunk_index_str.int()
+	file_size := file_size_str.int()
+	
+	// 验证文件大小
+	if file_size > manager.config.max_file_size {
+		ctx.status(413)
+		return ctx.json('{"error": "File too large", "max_size": "${manager.config.max_file_size}"}')
+	}
+	
+	// 获取前端传递的分片大小参数
+	chunk_size_str := form_data.get('chunk_size') or {
+		ctx.status(400)
+		return ctx.json('{"error": "Missing chunk_size"}')
+	}
+	chunk_size := chunk_size_str.int()
+	
+	// 验证分片大小（允许更大的分片大小，但不超过10MB）
+	max_allowed_chunk_size := 10 * 1024 * 1024 // 10MB
+	if chunk_size > max_allowed_chunk_size {
+		ctx.status(413)
+		return ctx.json('{"error": "Chunk size too large", "max_chunk_size": "$max_allowed_chunk_size"}')
+	}
+	
+	// 获取文件数据
+	file_data := form_data.get_file('chunk') or {
+		ctx.status(400)
+		return ctx.json('{"error": "Missing chunk file"}')
+	}
+	
+	// 创建按文件hash和分片大小分组的目录
+	chunk_dir := os.join_path(manager.config.temp_dir, file_hash.trim_space(), chunk_size.str())
+	os.mkdir_all(chunk_dir) or {
+		ctx.status(500)
+		return ctx.json('{"error": "Failed to create chunk directory"}')
+	}
+	
+	// 保存分片文件到hash/chunksize子目录
+	chunk_path := os.join_path(chunk_dir, 'chunk_${chunk_index}.part')
+	println('[DEBUG] Saving chunk to: $chunk_path')
+	println('[DEBUG] Chunk dir exists: ${os.exists(chunk_dir)}')
+	println('[DEBUG] Chunk data size: ${file_data.len} bytes')
+	
+	os.write_file(chunk_path, file_data) or {
+		println('[DEBUG] Failed to save chunk: $err')
+		ctx.status(500)
+		return ctx.json('{"error": "Failed to save chunk"}')
+	}
+	
+	// 更新上传状态
+	manager.update_upload_status(file_hash, filename, chunk_index, file_size, chunk_size)
+	
+	println('[DEBUG] Updated upload status for file: $file_hash, chunk: $chunk_index')
+	
+	// 判断是否所有分片都已上传，自动合并
+	// 基于分片大小总和来判断是否合并
+	mut all_chunk_uploaded := false
+	merge_chunk_dir := os.join_path(manager.config.temp_dir, file_hash.trim_space(), chunk_size.str())
+	
+	if os.exists(merge_chunk_dir) {
+		mut total_chunk_size := u64(0)
+		mut chunk_count := 0
+		mut max_chunk_index := -1
+		
+		// 遍历所有分片文件，计算总大小和找到最大分片索引
+		for i := 0; ; i++ {
+			merge_chunk_path := os.join_path(merge_chunk_dir, 'chunk_${i}.part')
+			if !os.exists(merge_chunk_path) {
+				break
+			}
+			chunk_info := os.stat(merge_chunk_path) or { continue }
+			total_chunk_size += chunk_info.size
+			chunk_count++
+			max_chunk_index = i
+		}
+		
+		println('[DEBUG] [MergeCheck] total_chunk_size=$total_chunk_size, file_size=$file_size, chunk_count=$chunk_count, max_chunk_index=$max_chunk_index')
+		
+		// 如果分片文件大小总和 >= file_size，认为可以合并
+		if total_chunk_size >= u64(file_size) {
+			all_chunk_uploaded = true
+			println('[DEBUG] All chunks uploaded based on size comparison')
+		}
+	}
+	
+	println('[DEBUG] All chunks uploaded: $all_chunk_uploaded')
+	
+	if all_chunk_uploaded {
+		// 重新计算分片数量用于合并
+		mut actual_total_chunks := 0
+		for i := 0; ; i++ {
+			check_chunk_path := os.join_path(merge_chunk_dir, 'chunk_${i}.part')
+			if !os.exists(check_chunk_path) {
+				break
+			}
+			actual_total_chunks++
+		}
+		
+		// 获取文件扩展名
+		file_ext := get_file_extension(filename)
+		final_filename := '${file_hash.trim_space()}${file_ext}'
+		final_path := os.join_path(manager.config.upload_dir, final_filename)
+		
+		// 检查最终文件是否已经存在，避免重复合并
+		if os.exists(final_path) {
+			println('[DEBUG] Final file already exists: $final_path, skipping merge')
+		} else {
+			println('[DEBUG] Merging chunks to: $final_path')
+			println('[DEBUG] Upload dir exists: ${os.exists(manager.config.upload_dir)}')
+			println('[DEBUG] Actual total chunks: $actual_total_chunks')
+			
+			manager.merge_chunks(file_hash, actual_total_chunks, final_path, chunk_size) or {
+				println('[DEBUG] Merge failed: $err')
+				ctx.status(500)
+				return ctx.json('{"error": "Failed to merge chunks", "message": "$err"}')
+			}
+		}
+		
+		// 在数据库中记录文件信息
+		file_info := manager.db.insert_or_update_file(file_hash, filename, file_size, file_ext) or {
+			println('[DEBUG] Failed to save file info to database: $err')
+			// 即使数据库保存失败，也不影响文件合并
+			FileInfo{}
+		}
+		
+		manager.uploads[file_hash].status = 'completed'
+		manager.uploads[file_hash].updated_at = int(time.now().unix())
+		
+		if manager.config.clear_chunks_on_complete {
+			manager.cleanup_chunks(file_hash, chunk_size)
+		}
+		
+		clean_file_path := final_path.replace('\n', '').replace('\r', '').replace('\\', '\\\\').trim_space()
+		return ctx.json('{"success": true, "all_chunk_uploaded": true, "file_path": "$clean_file_path", "file_uuid": "${file_info.file_uuid}", "message": "File merged successfully"}')
+	}
+	// 未全部上传，正常返回
+	return ctx.json('{"success": true, "chunk_index": $chunk_index, "all_chunk_uploaded": false, "message": "Chunk uploaded successfully"}')
+}
+
+// 处理分片合并
+pub fn (mut manager ChunkUploadManager) handle_chunk_merge(mut ctx Context) http.Response {
+	// 解析请求体
+	merge_request := hono.parse_merge_request(ctx.body) or {
+		ctx.status(400)
+		return ctx.json('{"error": "Invalid request body", "message": "$err"}')
+	}
+	
+	file_hash := merge_request.file_hash
+	filename := merge_request.filename
+	total_chunks := merge_request.total_chunks
+	
+	// 检查上传状态
+	upload_status := manager.uploads[file_hash] or {
+		ctx.status(404)
+		return ctx.json('{"error": "Upload not found"}')
+	}
+	
+	// 验证所有分片是否上传完成
+	if upload_status.uploaded_chunks.len != total_chunks {
+		ctx.status(400)
+		return ctx.json('{"error": "Not all chunks uploaded", "uploaded": ${upload_status.uploaded_chunks.len}, "total": $total_chunks}')
+	}
+	
+	// 合并文件
+	file_ext := get_file_extension(filename)
+	final_filename := '${file_hash.trim_space()}${file_ext}'
+	final_path := os.join_path(manager.config.upload_dir, final_filename)
+	
+	// 从上传状态中获取分片大小
+	chunk_size := upload_status.chunk_size
+	manager.merge_chunks(file_hash, total_chunks, final_path, chunk_size) or {
+		ctx.status(500)
+		return ctx.json('{"error": "Failed to merge chunks", "message": "$err"}')
+	}
+	
+	// 在数据库中记录文件信息
+	file_info := manager.db.insert_or_update_file(file_hash, filename, upload_status.file_size, file_ext) or {
+		println('[DEBUG] Failed to save file info to database: $err')
+		// 即使数据库保存失败，也不影响文件合并
+		FileInfo{}
+	}
+	
+	// 更新状态为完成
+	manager.uploads[file_hash].status = 'completed'
+	manager.uploads[file_hash].updated_at = int(time.now().unix())
+	
+	// 清理临时分片
+	manager.cleanup_chunks(file_hash, chunk_size)
+	
+	// 返回成功响应
+	clean_file_path2 := final_path.replace('\n', '').replace('\r', '').replace('\\', '\\\\').trim_space()
+	return ctx.json('{"success": true, "file_path": "$clean_file_path2", "file_uuid": "${file_info.file_uuid}", "message": "File merged successfully"}')
+}
+
+// 获取上传状态
+pub fn (manager ChunkUploadManager) get_upload_status(mut ctx Context) http.Response {
+	file_hash := ctx.query['file_hash'] or {
+		ctx.status(400)
+		return ctx.json('{"error": "Missing file_hash parameter"}')
+	}
+	
+	upload_status := manager.uploads[file_hash] or {
+		ctx.status(404)
+		return ctx.json('{"error": "Upload not found"}')
+	}
+	
+	return ctx.json(json.encode(upload_status))
+}
+
+// 更新上传状态
+pub fn (mut manager ChunkUploadManager) update_upload_status(file_hash string, filename string, chunk_index int, file_size int, chunk_size int) {
+	now := int(time.now().unix())
+	
+	if file_hash !in manager.uploads {
+		manager.uploads[file_hash] = FileUploadStatus{
+			file_hash: file_hash
+			filename: filename
+			total_chunks: 0 // 不再使用固定的total_chunks，改为动态计算
+			uploaded_chunks: []
+			file_size: file_size
+			chunk_size: chunk_size
+			status: 'uploading'
+			created_at: now
+			updated_at: now
+		}
+	}
+	
+	// 添加已上传的分片索引
+	if chunk_index !in manager.uploads[file_hash].uploaded_chunks {
+		manager.uploads[file_hash].uploaded_chunks << chunk_index
+	}
+	
+	manager.uploads[file_hash].updated_at = now
+}
+
+// 合并分片
+fn (mut manager ChunkUploadManager) merge_chunks(file_hash string, total_chunks int, final_path string, chunk_size int) ! {
+	println('[DEBUG] Merge chunks called with:')
+	println('[DEBUG]   file_hash: $file_hash')
+	println('[DEBUG]   total_chunks: $total_chunks')
+	println('[DEBUG]   final_path: $final_path')
+	println('[DEBUG]   chunk_size: $chunk_size')
+	println('[DEBUG]   upload_dir: ${manager.config.upload_dir}')
+	
+	// 确保上传目录存在
+	os.mkdir_all(manager.config.upload_dir) or {
+		return error('Failed to create upload directory: $err')
+	}
+	
+	// 检查目录权限
+	if !os.is_writable(manager.config.upload_dir) {
+		return error('Upload directory is not writable: ${manager.config.upload_dir}')
+	}
+	
+	println('[DEBUG] Creating final file: $final_path')
+	println('[DEBUG] Final path length: ${final_path.len}')
+	println('[DEBUG] Final path bytes: ${final_path.bytes()}')
+	println('[DEBUG] Final path exists: ${os.exists(final_path)}')
+	println('[DEBUG] Final path is file: ${os.is_file(final_path)}')
+	println('[DEBUG] Final path is dir: ${os.is_dir(final_path)}')
+	
+	// 如果文件已存在，直接返回成功
+	if os.exists(final_path) {
+		println('[DEBUG] Final file already exists, skipping creation')
+		return
+	}
+	
+	// Try to create the file with explicit path cleaning
+	clean_path := final_path.trim_space()
+	println('[DEBUG] Clean path: "$clean_path"')
+	println('[DEBUG] Clean path length: ${clean_path.len}')
+	
+	// Try to get absolute path
+	abs_path := os.abs_path(clean_path)
+	println('[DEBUG] Absolute path: "$abs_path"')
+	
+	mut final_file := os.create(abs_path) or {
+		println('[DEBUG] File creation failed with error: $err')
+		return error('Failed to create final file: $err')
+	}
+	defer { final_file.close() }
+	
+	for i in 0 .. total_chunks {
+		chunk_path := os.join_path(manager.config.temp_dir, file_hash.trim_space(), chunk_size.str(), 'chunk_${i}.part')
+		println('[DEBUG] Reading chunk: $chunk_path')
+		
+		if !os.exists(chunk_path) {
+			return error('Chunk file not found: $chunk_path')
+		}
+		
+		chunk_data := os.read_file(chunk_path) or {
+			return error('Failed to read chunk $i: $err')
+		}
+		
+		final_file.write(chunk_data.bytes()) or {
+			return error('Failed to write chunk $i: $err')
+		}
+		
+		println('[DEBUG] Chunk $i merged successfully, size: ${chunk_data.len} bytes')
+	}
+	
+	println('[DEBUG] All chunks merged successfully to: $final_path')
+}
+
+// 清理临时分片
+fn (mut manager ChunkUploadManager) cleanup_chunks(file_hash string, chunk_size int) {
+	chunk_dir := os.join_path(manager.config.temp_dir, file_hash.trim_space(), chunk_size.str())
+	if os.exists(chunk_dir) {
+		// 删除整个分片目录
+		os.rmdir_all(chunk_dir) or { 
+			println('[DEBUG] Failed to remove chunk directory: $err')
+		}
+	}
+}
+
+// 公共清理方法
+pub fn (mut manager ChunkUploadManager) cleanup_chunks_public(file_hash string, chunk_size int) {
+	manager.cleanup_chunks(file_hash, chunk_size)
+}
+
+// 内部合并处理方法
+pub fn (mut manager ChunkUploadManager) handle_chunk_merge_internal(file_hash string, filename string, total_chunks int, final_path string, chunk_size int, file_size int, file_ext string) ! {
+	// 执行合并
+	manager.merge_chunks(file_hash, total_chunks, final_path, chunk_size) or {
+		return error('Failed to merge chunks: $err')
+	}
+	
+	// 在数据库中记录文件信息
+	manager.db.insert_or_update_file(file_hash, filename, file_size, file_ext) or {
+		println('[DEBUG] Failed to save file info to database: $err')
+		// 即使数据库保存失败，也不影响文件合并
+	}
+}
+
+// 生成文件哈希
+pub fn generate_file_hash(data string) string {
+	return md5.sum(data.bytes()).hex()
+}
+
+// 验证文件完整性
+pub fn verify_file_integrity(file_path string, expected_hash string) bool {
+	file_data := os.read_file(file_path) or { return false }
+	actual_hash := generate_file_hash(file_data)
+	return actual_hash == expected_hash
+}
+
+// 获取文件扩展名
+fn get_file_extension(filename string) string {
+	parts := filename.split('.')
+	if parts.len > 1 {
+		return '.${parts.last()}'
+	}
+	return ''
+}
+
+// 清理文件上传状态（当文件被删除时调用）
+pub fn (mut manager ChunkUploadManager) cleanup_upload_status(file_hash string) {
+	if file_hash in manager.uploads {
+		manager.uploads.delete(file_hash)
+	}
+}
+
+// 检查并清理无效的上传状态
+pub fn (mut manager ChunkUploadManager) cleanup_invalid_status() {
+	mut to_delete := []string{}
+	
+	for file_hash, upload_status in manager.uploads {
+		// 检查最终文件是否存在
+		final_path := os.join_path(manager.config.upload_dir, upload_status.filename.trim_space())
+		if !os.exists(final_path) {
+			// 如果最终文件不存在，检查分片文件是否都存在
+			mut all_chunks_exist := true
+			chunk_size := upload_status.chunk_size
+			chunk_dir := os.join_path(manager.config.temp_dir, file_hash.trim_space(), chunk_size.str())
+			
+			// 动态检查分片文件
+			for i := 0; ; i++ {
+				chunk_path := os.join_path(chunk_dir, 'chunk_${i}.part')
+				if !os.exists(chunk_path) {
+					break
+				}
+				// 如果找到至少一个分片，说明上传正在进行中
+				all_chunks_exist = false
+				break
+			}
+			
+			// 如果没有找到任何分片文件，清理状态
+			if all_chunks_exist {
+				to_delete << file_hash
+			}
+		}
+	}
+	
+	// 删除无效状态
+	for file_hash in to_delete {
+		manager.uploads.delete(file_hash)
+	}
+} 

public/upload.html

@@ -0,0 +1,366 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>V-Hono 分片上传示例</title>
+    <style>
+        body { 
+            font-family: Arial, sans-serif; 
+            max-width: 800px; 
+            margin: 0 auto; 
+            padding: 20px; 
+            background-color: #f5f5f5;
+        }
+        .container {
+            background: white;
+            padding: 30px;
+            border-radius: 10px;
+            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
+        }
+        .upload-area {
+            border: 2px dashed #ccc;
+            border-radius: 8px;
+            padding: 40px;
+            text-align: center;
+            margin: 20px 0;
+            transition: border-color 0.3s;
+        }
+        .upload-area:hover {
+            border-color: #007bff;
+        }
+        .upload-area.dragover {
+            border-color: #007bff;
+            background-color: #f8f9fa;
+        }
+        .file-input {
+            display: none;
+        }
+        .btn {
+            background: #007bff;
+            color: white;
+            border: none;
+            padding: 12px 24px;
+            border-radius: 5px;
+            cursor: pointer;
+            font-size: 16px;
+            margin: 10px;
+        }
+        .btn:hover {
+            background: #0056b3;
+        }
+        .btn:disabled {
+            background: #6c757d;
+            cursor: not-allowed;
+        }
+        .progress-container {
+            margin: 20px 0;
+            display: none;
+        }
+        .progress-bar {
+            width: 100%;
+            height: 20px;
+            background-color: #e9ecef;
+            border-radius: 10px;
+            overflow: hidden;
+        }
+        .progress-fill {
+            height: 100%;
+            background: linear-gradient(90deg, #007bff, #28a745);
+            width: 0%;
+            transition: width 0.3s;
+        }
+        .status {
+            margin: 10px 0;
+            padding: 10px;
+            border-radius: 5px;
+            display: none;
+        }
+        .status.success {
+            background-color: #d4edda;
+            color: #155724;
+            border: 1px solid #c3e6cb;
+        }
+        .status.error {
+            background-color: #f8d7da;
+            color: #721c24;
+            border: 1px solid #f5c6cb;
+        }
+        .file-info {
+            margin: 10px 0;
+            padding: 15px;
+            background-color: #f8f9fa;
+            border-radius: 5px;
+            display: none;
+        }
+        .chunk-status {
+            margin: 10px 0;
+            font-size: 14px;
+            color: #666;
+        }
+    </style>
+</head>
+<body>
+    <div class="container">
+        <h1>🚀 V-Hono 分片上传示例</h1>
+        <p>支持大文件分片上传、断点续传、秒传功能</p>
+        
+        <div class="upload-area" id="uploadArea">
+            <p>📁 拖拽文件到此处或点击选择文件</p>
+            <input type="file" id="fileInput" class="file-input" multiple>
+            <button class="btn" onclick="document.getElementById('fileInput').click()">选择文件</button>
+        </div>
+
+        <div class="file-info" id="fileInfo">
+            <h3>文件信息</h3>
+            <p><strong>文件名:</strong> <span id="fileName"></span></p>
+            <p><strong>文件大小:</strong> <span id="fileSize"></span></p>
+            <p><strong>分片数量:</strong> <span id="chunkCount"></span></p>
+            <p><strong>分片大小:</strong> <span id="chunkSize"></span></p>
+        </div>
+
+        <div class="progress-container" id="progressContainer">
+            <h3>上传进度</h3>
+            <div class="progress-bar">
+                <div class="progress-fill" id="progressFill"></div>
+            </div>
+            <div class="chunk-status" id="chunkStatus"></div>
+        </div>
+
+        <div class="status" id="status"></div>
+
+        <button class="btn" id="uploadBtn" onclick="startUpload()" style="display: none;">开始上传</button>
+    </div>
+
+    <script src="https://cdn.jsdelivr.net/npm/spark-md5@3.0.2/spark-md5.min.js"></script>
+    <script>
+        const CHUNK_SIZE = 2 * 1024 * 1024; // 2MB
+        let selectedFile = null;
+        let fileHash = null;
+        let totalChunks = 0;
+        let uploadedChunks = 0;
+
+        // 文件选择处理
+        document.getElementById('fileInput').addEventListener('change', handleFileSelect);
+        
+        // 拖拽处理
+        const uploadArea = document.getElementById('uploadArea');
+        uploadArea.addEventListener('dragover', (e) => {
+            e.preventDefault();
+            uploadArea.classList.add('dragover');
+        });
+        uploadArea.addEventListener('dragleave', () => {
+            uploadArea.classList.remove('dragover');
+        });
+        uploadArea.addEventListener('drop', (e) => {
+            e.preventDefault();
+            uploadArea.classList.remove('dragover');
+            const files = e.dataTransfer.files;
+            if (files.length > 0) {
+                document.getElementById('fileInput').files = files;
+                handleFileSelect();
+            }
+        });
+
+        function handleFileSelect() {
+            const file = document.getElementById('fileInput').files[0];
+            if (!file) return;
+
+            // 重置上传状态
+            resetUploadState();
+
+            selectedFile = file;
+            totalChunks = Math.ceil(file.size / CHUNK_SIZE);
+            
+            // 显示文件信息
+            document.getElementById('fileName').textContent = file.name;
+            document.getElementById('fileSize').textContent = formatFileSize(file.size);
+            document.getElementById('chunkCount').textContent = totalChunks;
+            document.getElementById('chunkSize').textContent = formatFileSize(CHUNK_SIZE);
+            
+            document.getElementById('fileInfo').style.display = 'block';
+            document.getElementById('uploadBtn').style.display = 'inline-block';
+            
+            // 计算文件hash
+            calculateFileHash(file).then(hash => {
+                fileHash = hash;
+                console.log('File hash:', hash);
+            });
+        }
+
+        // 重置上传状态
+        function resetUploadState() {
+            // 重置进度条
+            document.getElementById('progressFill').style.width = '0%';
+            document.getElementById('chunkStatus').textContent = '';
+            
+            // 隐藏进度容器
+            document.getElementById('progressContainer').style.display = 'none';
+            
+            // 重置状态信息
+            document.getElementById('status').style.display = 'none';
+            
+            // 重置上传按钮
+            const uploadBtn = document.getElementById('uploadBtn');
+            uploadBtn.disabled = false;
+            uploadBtn.textContent = '开始上传';
+            
+            // 重置变量
+            uploadedChunks = 0;
+        }
+
+        async function startUpload() {
+            if (!selectedFile || !fileHash) {
+                showStatus('请先选择文件', 'error');
+                return;
+            }
+
+            const uploadBtn = document.getElementById('uploadBtn');
+            uploadBtn.disabled = true;
+            uploadBtn.textContent = '上传中...';
+
+            document.getElementById('progressContainer').style.display = 'block';
+            showStatus('开始上传...', 'success');
+
+            try {
+                // 直接开始上传分片，每个分片都会检查是否存在
+                for (let i = 0; i < totalChunks; i++) {
+                    const chunk = selectedFile.slice(i * CHUNK_SIZE, (i + 1) * CHUNK_SIZE);
+                    const chunkHash = await calculateChunkHash(chunk);
+
+                    // 检查分片是否已存在（包括秒传检测）
+                    const checkResult = await checkChunkExists(fileHash, i, chunkHash);
+                    
+                    // 如果检测到所有分片都已上传完成，立即结束上传
+                    if (checkResult.all_uploaded) {
+                        console.log('检测到秒传，所有分片都已上传完成！');
+                        updateProgress(totalChunks, totalChunks); // 更新进度到100%
+                        showStatus('秒传成功！文件已完整上传。', 'success');
+                        uploadBtn.textContent = '上传完成';
+                        return;
+                    }
+                    
+                    // 如果分片已存在，跳过上传
+                    if (checkResult.exists) {
+                        console.log(`分片 ${i} 已存在，跳过上传`);
+                        updateProgress(i + 1, totalChunks);
+                        continue;
+                    }
+
+                    // 上传分片
+                    await uploadChunk(selectedFile, chunk, {
+                        fileHash, chunkIndex: i, totalChunks, chunkHash
+                    });
+                    
+                    updateProgress(i + 1, totalChunks);
+                    console.log(`分片 ${i} 上传完成`);
+                }
+
+                showStatus('上传完成！文件已自动合并。', 'success');
+                uploadBtn.textContent = '上传完成';
+                
+            } catch (error) {
+                console.error('上传失败:', error);
+                showStatus('上传失败: ' + error.message, 'error');
+                uploadBtn.disabled = false;
+                uploadBtn.textContent = '重新上传';
+            }
+        }
+
+        // 计算文件hash
+        async function calculateFileHash(file) {
+            return new Promise(resolve => {
+                const spark = new SparkMD5.ArrayBuffer();
+                const reader = new FileReader();
+                reader.onload = e => {
+                    spark.append(e.target.result);
+                    resolve(spark.end());
+                };
+                reader.readAsArrayBuffer(file);
+            });
+        }
+
+        // 计算分片hash
+        async function calculateChunkHash(chunk) {
+            return new Promise(resolve => {
+                const spark = new SparkMD5.ArrayBuffer();
+                const reader = new FileReader();
+                reader.onload = e => {
+                    spark.append(e.target.result);
+                    resolve(spark.end());
+                };
+                reader.readAsArrayBuffer(chunk);
+            });
+        }
+
+
+
+        // 检查分片hash是否已存在
+        async function checkChunkExists(fileHash, chunkIndex, chunkHash) {
+            const res = await fetch('/upload/chunk_exists?file_hash=' + fileHash + '&chunk_index=' + chunkIndex + '&chunk_hash=' + chunkHash + '&file_size=' + selectedFile.size + '&trunk_size=' + CHUNK_SIZE);
+            if (!res.ok) return false;
+            const data = await res.json();
+            
+            // 如果所有分片都已上传完成，直接返回 true 表示秒传成功
+            if (data.all_chunk_uploaded) {
+                console.log('所有分片都已上传完成，秒传成功！');
+                return { exists: true, all_uploaded: true };
+            }
+            
+            return { exists: data.exists, all_uploaded: false };
+        }
+
+        // 上传分片
+        async function uploadChunk(file, chunk, { fileHash, chunkIndex, totalChunks, chunkHash }) {
+            const form = new FormData();
+            form.append('file_hash', fileHash);
+            form.append('chunk_index', chunkIndex);
+            form.append('total_chunks', totalChunks);
+            form.append('filename', file.name);
+            form.append('file_size', file.size);
+            form.append('chunk_size', CHUNK_SIZE);
+            form.append('chunk_hash', chunkHash);
+            form.append('chunk', chunk, file.name + '.part' + chunkIndex);
+
+            const response = await fetch('/upload/chunk', { 
+                method: 'POST', 
+                body: form 
+            });
+            
+            if (!response.ok) {
+                const error = await response.json();
+                throw new Error(error.error || '上传失败');
+            }
+            
+            const result = await response.json();
+            if (result.all_chunk_uploaded) {
+                console.log('所有分片已上传完成，文件已自动合并:', result.file_path);
+            }
+        }
+
+        // 更新进度
+        function updateProgress(current, total) {
+            const percentage = (current / total) * 100;
+            document.getElementById('progressFill').style.width = percentage + '%';
+            document.getElementById('chunkStatus').textContent = current + '/' + total + ' 分片已上传 (' + percentage.toFixed(1) + '%)';
+        }
+
+        // 显示状态
+        function showStatus(message, type) {
+            const status = document.getElementById('status');
+            status.textContent = message;
+            status.className = 'status ' + type;
+            status.style.display = 'block';
+        }
+
+        // 格式化文件大小
+        function formatFileSize(bytes) {
+            if (bytes === 0) return '0 Bytes';
+            const k = 1024;
+            const sizes = ['Bytes', 'KB', 'MB', 'GB'];
+            const i = Math.floor(Math.log(bytes) / Math.log(k));
+            return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
+        }
+    </script>
+</body>
+</html> 

test_no_total_chunks.v

@@ -0,0 +1,93 @@
+module main
+
+import hono
+import os
+
+fn main() {
+	println('Testing upload without total_chunks parameter...')
+	
+	// Create upload manager
+	mut upload_manager := hono.new_chunk_upload_manager(hono.ChunkUploadConfig{})
+	
+	// Test file info
+	file_hash := 'test123456789'
+	filename := 'test_file.zip'
+	chunk_index := 0
+	chunk_size := 2097152
+	file_size := 93569
+	
+	// Create test chunk directory and file
+	chunk_dir := os.join_path(os.join_path('./uploads/chunks', file_hash), chunk_size.str())
+	os.mkdir_all(chunk_dir) or { panic('Failed to create chunk directory') }
+	
+	// Create a test chunk file
+	chunk_path := os.join_path(chunk_dir, 'chunk_${chunk_index}.part')
+	test_data := 'This is test chunk data for testing the merge functionality.'
+	os.write_file(chunk_path, test_data) or { panic('Failed to create test chunk') }
+	
+	println('Created test chunk at: $chunk_path')
+	
+	// Test the update_upload_status function
+	upload_manager.update_upload_status(file_hash, filename, chunk_index, file_size, chunk_size)
+	println('Updated upload status')
+	
+	// Check if the upload status was created correctly
+	if file_hash in upload_manager.uploads {
+		status := upload_manager.uploads[file_hash]
+		println('Upload status:')
+		println('  File hash: ${status.file_hash}')
+		println('  Filename: ${status.filename}')
+		println('  Total chunks: ${status.total_chunks}')
+		println('  Uploaded chunks: ${status.uploaded_chunks}')
+		println('  File size: ${status.file_size}')
+		println('  Chunk size: ${status.chunk_size}')
+		println('  Status: ${status.status}')
+	} else {
+		println('Upload status not found!')
+		return
+	}
+	
+	// Test the merge logic
+	file_ext := get_file_extension(filename)
+	final_filename := '${file_hash.trim_space()}${file_ext}'
+	final_path := os.join_path('./uploads/files', final_filename)
+	
+	println('Testing merge logic...')
+	println('Final path: $final_path')
+	
+	// Calculate actual total chunks
+	mut actual_total_chunks := 0
+	for i := 0; ; i++ {
+		check_chunk_path := os.join_path(chunk_dir, 'chunk_${i}.part')
+		if !os.exists(check_chunk_path) {
+			break
+		}
+		actual_total_chunks++
+	}
+	
+	println('Actual total chunks: $actual_total_chunks')
+	
+	// Test merge
+	upload_manager.handle_chunk_merge_internal(file_hash, filename, actual_total_chunks, final_path, chunk_size, file_size, file_ext) or {
+		println('Merge failed: $err')
+		return
+	}
+	
+	println('Merge successful!')
+	println('Final file exists: ${os.exists(final_path)}')
+	
+	// Clean up
+	os.rmdir_all(chunk_dir) or { println('Failed to clean up chunk directory') }
+	os.rm(final_path) or { println('Failed to clean up final file') }
+	
+	println('Test completed successfully!')
+}
+
+// 获取文件扩展名
+fn get_file_extension(filename string) string {
+	parts := filename.split('.')
+	if parts.len > 1 {
+		return '.${parts.last()}'
+	}
+	return ''
+} 

test_specific_fix.v

@@ -0,0 +1,66 @@
+module main
+
+import hono
+import os
+
+fn main() {
+	println('Testing specific file fix...')
+	
+	// Create upload manager
+	mut upload_manager := hono.new_chunk_upload_manager(hono.ChunkUploadConfig{})
+	
+	// Use the exact same parameters from the failing case
+	file_hash := 'a45abf58302850765be03cf78bcf5129'
+	filename := 'test.zip' // This should give us .zip extension
+	total_chunks := 1
+	chunk_size := 2097152
+	file_size := 93569
+	
+	// Create test chunk directory and file
+	chunk_dir := os.join_path(os.join_path('./uploads/chunks', file_hash), chunk_size.str())
+	os.mkdir_all(chunk_dir) or { panic('Failed to create chunk directory') }
+	
+	// Create a test chunk file
+	chunk_path := os.join_path(chunk_dir, 'chunk_0.part')
+	test_data := 'This is test chunk data for testing the merge functionality.'
+	os.write_file(chunk_path, test_data) or { panic('Failed to create test chunk') }
+	
+	println('Created test chunk at: $chunk_path')
+	
+	// Test the file extension function
+	file_ext := get_file_extension(filename)
+	println('File extension: "$file_ext"')
+	
+	// Test the merge functionality with the exact same path construction
+	final_filename := '${file_hash.trim_space()}${file_ext}'
+	final_path := os.join_path('./uploads/files', final_filename)
+	println('Attempting to merge to: $final_path')
+	
+	upload_manager.handle_chunk_merge_internal(file_hash, filename, total_chunks, final_path, chunk_size, file_size, file_ext) or {
+		println('Merge failed: $err')
+		return
+	}
+	
+	println('Merge successful!')
+	println('Final file exists: ${os.exists(final_path)}')
+	
+	// Clean up
+	os.rmdir_all(chunk_dir) or { println('Failed to clean up chunk directory') }
+	os.rm(final_path) or { println('Failed to clean up final file') }
+	
+	println('Test completed successfully!')
+}
+
+// 获取文件扩展名
+fn get_file_extension(filename string) string {
+	println('[DEBUG] Getting extension for filename: "$filename"')
+	parts := filename.split('.')
+	println('[DEBUG] Split parts: $parts')
+	if parts.len > 1 {
+		ext := '.${parts.last()}'
+		println('[DEBUG] Extracted extension: "$ext"')
+		return ext
+	}
+	println('[DEBUG] No extension found, returning empty string')
+	return ''
+} 

v.mod

@@ -1,7 +1,6 @@
 Module {
 	name: 'v-hono'
 	description: 'A high-performance V language web framework with hybrid routing and LRU cache'
-	version: '0.1.0'
+	version: '0.2.0'
 	license: 'MIT'
-	dependencies: []
 }