Upload 17 files
Browse files- README.md +146 -148
- hf-deploy/Dockerfile +6 -13
- hf-deploy/server.js +14 -35
README.md
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---
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title: Page
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emoji:
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colorFrom:
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sdk: docker
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pinned: false
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license: mit
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-d '{"url": "https://google.com"}' \
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--output test-screenshot.jpg
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```
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---
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title: Page Screenshot API
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emoji: 📸
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colorFrom: blue
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colorTo: green
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sdk: docker
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pinned: false
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license: mit
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---
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# Page Screenshot API
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A web service that captures screenshots of web pages using Puppeteer.
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## Features
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- Web page screenshot capture
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- Customizable dimensions (width/height)
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- Adjustable image quality
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- Rate limiting for API protection
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- CORS enabled for cross-origin requests
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## API Usage
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### POST /screenshot
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Capture a screenshot of a web page.
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**Request Body:**
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```json
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{
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"url": "https://example.com",
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"width": 1920,
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"height": 1080,
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"quality": 80
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}
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```
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**Parameters:**
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- `url` (required): The URL of the webpage to capture
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- `width` (optional): Screenshot width in pixels (default: 1920, range: 100-4000)
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- `height` (optional): Screenshot height in pixels (default: 1080, range: 100-4000)
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- `quality` (optional): JPEG quality (default: 80, range: 1-100)
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**Response:**
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Returns the screenshot as a JPEG image.
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### GET /
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Health check endpoint that returns API status.
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## Example Usage
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```bash
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curl -X POST https://your-app.railway.app/screenshot \
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-H "Content-Type: application/json" \
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-d '{"url": "https://example.com", "width": 1280, "height": 720}' \
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--output screenshot.jpg
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```
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## Rate Limiting
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- 100 requests per 15 minutes per IP address
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## Deployment
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This application can be deployed on various platforms:
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- Hugging Face Spaces (Docker)
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- Railway
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- Render.com
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- Vercel
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For detailed deployment instructions, see `DEPLOYMENT_GUIDE.md`.
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## Railway部署指南
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### 1. 准备部署
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确保你的项目包含以下文件:
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- `Dockerfile` - 容器化配置
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- `railway.toml` - Railway部署配置
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- `package.json` - 依赖和启动脚本
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### 2. 部署到Railway
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有两种方式部署到Railway:
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#### 方式一:通过GitHub连接(推荐)
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1. 将代码推送到GitHub仓库
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2. 访问 [Railway.app](https://railway.app)
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3. 登录并点击 "New Project"
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4. 选择 "Deploy from GitHub repo"
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5. 选择你的仓库
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6. Railway会自动检测Dockerfile并开始部署
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#### 方式二:使用Railway CLI
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```bash
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# 安装Railway CLI
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npm install -g @railway/cli
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# 登录Railway
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railway login
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# 初始化项目
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railway init
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# 部署
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railway up
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```
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### 3. 环境变量配置
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在Railway控制台的Variables标签中添加:
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- `NODE_ENV=production`
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- `PORT` (Railway自动设置,无需手动配置)
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### 4. 资源配置
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推荐配置:
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- CPU: 1 vCPU
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- Memory: 1GB RAM
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这些配置已在 `railway.toml` 中预设。
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### 5. 自定义域名(可选)
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在Railway控制台的Settings > Domains中可以:
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- 使用Railway提供的免费子域名
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- 绑定你自己的域名
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### 6. 监控和日志
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- 在Railway控制台的Deployments标签查看部署状态
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- 在Metrics标签监控资源使用情况
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- 在Variables标签管理环境变量
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### 故障排除
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如果部署失败,检查:
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1. Dockerfile语法是否正确
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2. package.json中的start脚本是否正确
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3. 依赖包是否都已安装
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4. 内存使用是否超出限制
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### 部署后测试
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```bash
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# 健康检查
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curl https://your-app.railway.app/
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# 截图测试
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curl -X POST https://your-app.railway.app/screenshot \
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-H "Content-Type: application/json" \
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-d '{"url": "https://google.com"}' \
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--output test-screenshot.jpg
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```
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hf-deploy/Dockerfile
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#
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FROM ghcr.io/puppeteer/puppeteer:21.5.2
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#
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USER root
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# 安装额外的字体和依赖
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RUN apt-get update && apt-get install -y \
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fonts-liberation \
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fonts-dejavu-core \
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&& rm -rf /var/lib/apt/lists/*
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-
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# 设置工作目录
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WORKDIR /usr/src/app
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# 复制 package 文件
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COPY package*.json ./
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#
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RUN npm ci --only=production && npm cache clean --force
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# 复制应用代码
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# 设置环境变量
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ENV NODE_ENV=production
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ENV PORT=7860
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ENV PUPPETEER_EXECUTABLE_PATH=/usr/bin/google-chrome-stable
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# 暴露端口
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EXPOSE 7860
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# 最简 HF Spaces Dockerfile - 修复版
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FROM ghcr.io/puppeteer/puppeteer:21.5.2
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# 直接设置工作目录
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WORKDIR /usr/src/app
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# 复制 package 文件
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COPY package*.json ./
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# 切换到 root 用户安装依赖
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USER root
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# 安装 Node.js 依赖
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RUN npm ci --only=production && npm cache clean --force
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# 复制应用代码
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# 设置环境变量
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ENV NODE_ENV=production
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ENV PORT=7860
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# 暴露端口
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EXPOSE 7860
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hf-deploy/server.js
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// 中间件配置 - HF Spaces 优化
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app.use(helmet({
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contentSecurityPolicy: false
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}));
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app.use(cors());
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app.use(express.json({ limit: '10mb' }));
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// 速率限制
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const limiter = rateLimit({
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windowMs: 15 * 60 * 1000,
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max: 30,
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message: {
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error: 'Too many requests, please try again later.'
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}
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});
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});
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// 截图API端点
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app.post('/screenshot', async (req, res) => {
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const { url, width = 1280, height = 720, quality = 75 } = req.body;
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// 参数验证
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if (!url) {
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return res.status(400).json({
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error: 'URL is required',
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});
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}
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// URL格式验证
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try {
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const urlObj = new URL(url);
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// 检查协议
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if (!['http:', 'https:'].includes(urlObj.protocol)) {
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return res.status(400).json({
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error: 'Only HTTP and HTTPS URLs are supported'
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});
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}
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// 分辨率验证 - HF Spaces 更严格限制
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if (width < 100 || width > 1600 || height < 100 || height > 1200) {
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return res.status(400).json({
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error: 'Width must be 100-1600px, height must be 100-1200px for HF Spaces'
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let browser;
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try {
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-
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headless: 'new',
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args: [
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'--no-sandbox',
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'--disable-extensions',
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'--disable-background-timer-throttling',
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'--disable-backgrounding-occluded-windows',
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'--disable-renderer-backgrounding'
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'--disable-features=TranslateUI',
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'--disable-default-apps',
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'--no-default-browser-check',
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'--disable-background-networking'
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]
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};
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-
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// 在 HF Spaces 中使用系统 Chrome
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if (process.env.PUPPETEER_EXECUTABLE_PATH) {
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browserOptions.executablePath = process.env.PUPPETEER_EXECUTABLE_PATH;
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}
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console.log('Launching browser...');
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browser = await puppeteer.launch(browserOptions);
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const page = await browser.newPage();
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// 设置视窗大小
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await page.setViewport({
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width: parseInt(width),
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height: parseInt(height),
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deviceScaleFactor: 1
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});
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// 设置用户代理和其他页面选项
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await page.setUserAgent('Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36');
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//
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await page.setRequestInterception(true);
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page.on('request', (req) => {
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const resourceType = req.resourceType();
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console.log(`Navigating to: ${url}`);
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// 访问页面 - HF Spaces 更短超时
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await page.goto(url, {
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waitUntil: 'domcontentloaded',
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timeout: 15000
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});
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// 等待页面稳定
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await page.waitForTimeout(1000);
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console.log('Taking screenshot...');
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// 截图
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const screenshot = await page.screenshot({
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type: 'jpeg',
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quality: Math.max(10, Math.min(100, parseInt(quality))),
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console.log(`Screenshot taken: ${screenshot.length} bytes`);
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// 设置响应头
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res.set({
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'Content-Type': 'image/jpeg',
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'Content-Length': screenshot.length,
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| 167 |
message: error.message
|
| 168 |
};
|
| 169 |
|
| 170 |
-
// 根据错误类型提供更好的错误信息
|
| 171 |
if (error.message.includes('timeout')) {
|
| 172 |
errorResponse.suggestion = 'Try a simpler webpage or reduce timeout';
|
| 173 |
} else if (error.message.includes('net::')) {
|
|
@@ -187,7 +166,7 @@ app.post('/screenshot', async (req, res) => {
|
|
| 187 |
}
|
| 188 |
});
|
| 189 |
|
| 190 |
-
// HF Spaces 演示界面
|
| 191 |
app.get('/demo', (req, res) => {
|
| 192 |
res.send(`
|
| 193 |
<!DOCTYPE html>
|
|
|
|
| 9 |
|
| 10 |
// 中间件配置 - HF Spaces 优化
|
| 11 |
app.use(helmet({
|
| 12 |
+
contentSecurityPolicy: false
|
| 13 |
}));
|
| 14 |
app.use(cors());
|
| 15 |
app.use(express.json({ limit: '10mb' }));
|
| 16 |
|
| 17 |
+
// 速率限制
|
| 18 |
const limiter = rateLimit({
|
| 19 |
windowMs: 15 * 60 * 1000,
|
| 20 |
+
max: 30,
|
| 21 |
message: {
|
| 22 |
error: 'Too many requests, please try again later.'
|
| 23 |
}
|
|
|
|
| 39 |
});
|
| 40 |
});
|
| 41 |
|
| 42 |
+
// 截图API端点
|
| 43 |
app.post('/screenshot', async (req, res) => {
|
| 44 |
const { url, width = 1280, height = 720, quality = 75 } = req.body;
|
| 45 |
|
|
|
|
| 46 |
if (!url) {
|
| 47 |
return res.status(400).json({
|
| 48 |
error: 'URL is required',
|
|
|
|
| 50 |
});
|
| 51 |
}
|
| 52 |
|
|
|
|
| 53 |
try {
|
| 54 |
const urlObj = new URL(url);
|
|
|
|
| 55 |
if (!['http:', 'https:'].includes(urlObj.protocol)) {
|
| 56 |
return res.status(400).json({
|
| 57 |
error: 'Only HTTP and HTTPS URLs are supported'
|
|
|
|
| 63 |
});
|
| 64 |
}
|
| 65 |
|
|
|
|
| 66 |
if (width < 100 || width > 1600 || height < 100 || height > 1200) {
|
| 67 |
return res.status(400).json({
|
| 68 |
error: 'Width must be 100-1600px, height must be 100-1200px for HF Spaces'
|
|
|
|
| 71 |
|
| 72 |
let browser;
|
| 73 |
try {
|
| 74 |
+
console.log('Launching browser...');
|
| 75 |
+
|
| 76 |
+
// HF Spaces 优化配置 - 使用 Puppeteer 镜像的默认 Chrome
|
| 77 |
+
browser = await puppeteer.launch({
|
| 78 |
headless: 'new',
|
| 79 |
args: [
|
| 80 |
'--no-sandbox',
|
|
|
|
| 87 |
'--disable-extensions',
|
| 88 |
'--disable-background-timer-throttling',
|
| 89 |
'--disable-backgrounding-occluded-windows',
|
| 90 |
+
'--disable-renderer-backgrounding'
|
|
|
|
|
|
|
|
|
|
|
|
|
| 91 |
]
|
| 92 |
+
});
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 93 |
|
| 94 |
const page = await browser.newPage();
|
| 95 |
|
|
|
|
| 96 |
await page.setViewport({
|
| 97 |
width: parseInt(width),
|
| 98 |
height: parseInt(height),
|
| 99 |
deviceScaleFactor: 1
|
| 100 |
});
|
| 101 |
|
|
|
|
| 102 |
await page.setUserAgent('Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36');
|
| 103 |
|
| 104 |
+
// 拦截资源以提高性能
|
| 105 |
await page.setRequestInterception(true);
|
| 106 |
page.on('request', (req) => {
|
| 107 |
const resourceType = req.resourceType();
|
|
|
|
| 114 |
|
| 115 |
console.log(`Navigating to: ${url}`);
|
| 116 |
|
|
|
|
| 117 |
await page.goto(url, {
|
| 118 |
+
waitUntil: 'domcontentloaded',
|
| 119 |
+
timeout: 15000
|
| 120 |
});
|
| 121 |
|
|
|
|
| 122 |
await page.waitForTimeout(1000);
|
| 123 |
|
| 124 |
console.log('Taking screenshot...');
|
| 125 |
|
|
|
|
| 126 |
const screenshot = await page.screenshot({
|
| 127 |
type: 'jpeg',
|
| 128 |
quality: Math.max(10, Math.min(100, parseInt(quality))),
|
|
|
|
| 131 |
|
| 132 |
console.log(`Screenshot taken: ${screenshot.length} bytes`);
|
| 133 |
|
|
|
|
| 134 |
res.set({
|
| 135 |
'Content-Type': 'image/jpeg',
|
| 136 |
'Content-Length': screenshot.length,
|
|
|
|
| 147 |
message: error.message
|
| 148 |
};
|
| 149 |
|
|
|
|
| 150 |
if (error.message.includes('timeout')) {
|
| 151 |
errorResponse.suggestion = 'Try a simpler webpage or reduce timeout';
|
| 152 |
} else if (error.message.includes('net::')) {
|
|
|
|
| 166 |
}
|
| 167 |
});
|
| 168 |
|
| 169 |
+
// HF Spaces 演示界面
|
| 170 |
app.get('/demo', (req, res) => {
|
| 171 |
res.send(`
|
| 172 |
<!DOCTYPE html>
|