how can I upload image or json file ?

[SheikhElMoctarG]

when I tried to upload json file, I found this error:
MulterError: Unexpected field at wrappedFileFilter (E:\nodejs-projects\uploadFiles\node_modules\multer\index.js:40:19) at Multipart.<anonymous> (E:\nodejs-projects\uploadFiles\node_modules\multer\lib\make-middleware.js:107:7) at Multipart.emit (node:events:513:28) at HeaderParser.cb (E:\nodejs-projects\uploadFiles\node_modules\busboy\lib\types\multipart.js:358:14) at HeaderParser.push (E:\nodejs-projects\uploadFiles\node_modules\busboy\lib\types\multipart.js:162:20)

how can I upload json file and add extension of file ? what abou Xlsx files ?

[Sameercode660]

Hello, SheikhEIMoctarG, for uploading the specific type of data , you have to configure the multer explicitly
const upload = multer({
storage: storage,
fileFilter: function (req, file, cb) {
// Allow only JSON and Xlsx files
if (file.mimetype === 'application/json' || file.mimetype === 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet') {
cb(null, true);
} else {
cb(new Error('Unsupported file type'), false);
}
},
});