52 lines
1.2 KiB
TypeScript
52 lines
1.2 KiB
TypeScript
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/**
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* multer 文件上传配置
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*/
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import multer from 'multer';
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import path from 'path';
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import fs from 'fs';
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import { fileURLToPath } from 'url';
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const __filename = fileURLToPath(import.meta.url);
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const __dirname = path.dirname(__filename);
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const uploadsDir = path.resolve(__dirname, '..', 'uploads');
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if (!fs.existsSync(uploadsDir)) {
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fs.mkdirSync(uploadsDir, { recursive: true });
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}
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const storage = multer.diskStorage({
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destination: (_req, _file, cb) => {
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cb(null, uploadsDir);
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},
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filename: (_req, file, cb) => {
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const ext = path.extname(file.originalname).toLowerCase() || '.jpg';
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const unique = `${Date.now()}_${Math.round(Math.random() * 1e6)}${ext}`;
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cb(null, unique);
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},
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});
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const allowedMime = new Set([
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'image/jpeg',
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'image/png',
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'image/gif',
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'image/webp',
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'image/avif',
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]);
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export const upload = multer({
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storage,
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limits: {
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fileSize: 20 * 1024 * 1024, // 20MB / 单图
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files: 30, // 最多 30 张
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},
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fileFilter: (_req, file, cb) => {
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if (allowedMime.has(file.mimetype)) {
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cb(null, true);
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} else {
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cb(new Error(`不支持的文件类型: ${file.mimetype}`));
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}
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},
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});
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export const UPLOADS_DIR = uploadsDir;
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