董海洋
58 lines
1.4 KiB
JavaScript
58 lines
1.4 KiB
JavaScript
const Router = require('koa-router')
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const multer = require('@koa/multer')
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const path = require('path')
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const fs = require('fs')
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const router = new Router()
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const ALLOWED_TYPES = ['image/jpeg', 'image/png', 'image/gif', 'image/webp']
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const MAX_SIZE = 5 * 1024 * 1024
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const uploadDir = path.join(__dirname, '..', 'public', 'uploads')
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const storage = multer.diskStorage({
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destination: (req, file, cb) => {
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const type = (req.query && req.query.type) || 'goods'
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const dir = path.join(uploadDir, type)
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if (!fs.existsSync(dir)) {
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fs.mkdirSync(dir, { recursive: true })
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}
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cb(null, dir)
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},
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filename: (req, file, cb) => {
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const uniqueSuffix = Date.now() + '-' + Math.round(Math.random() * 1e9)
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const ext = path.extname(file.originalname)
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cb(null, uniqueSuffix + ext)
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}
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})
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const upload = multer({
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storage,
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limits: { fileSize: MAX_SIZE },
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fileFilter: (req, file, cb) => {
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if (ALLOWED_TYPES.includes(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，仅支持 jpg/png/gif/webp'))
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}
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}
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})
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router.post('/', upload.single('file'), async (ctx) => {
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if (!ctx.file) {
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ctx.status = 400
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ctx.body = { code: 400, message: '没有上传文件' }
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return
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}
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const type = ctx.query.type || 'goods'
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const fileUrl = `/uploads/${type}/${ctx.file.filename}`
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ctx.body = {
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code: 200,
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message: '上传成功',
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url: fileUrl
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}
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})
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module.exports = router.routes()
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