I am trying to upload image to my node.js server and when I upload nothing and just send the request to post without image, it works fine but whenever I try to post the image node.js shows error in console
here is the link to post "http://localhost:3001/databaseGym/logo" here is my code to handle post operation to that link
Router.post('/logo', upload.single('file'), (req, res) => {
console.log("working");
//res.json({ file: req.file });
res.send("done");
});
and here is my code for upload in upload.single()
// Create storage engine
const storage = new GridFsStorage({
url: url,
file: (req, file) => {
return new Promise((resolve, reject) => {
crypto.randomBytes(16, (err, buf) => {
if (err) {
return reject(err);
}
const filename = buf.toString('hex') path.extname(file.originalname);
const fileInfo = {
filename: filename,
bucketName: 'logo'
};
resolve(fileInfo);
});
});
}
});
const upload = multer({ storage });
and here is the screenshot of postman app through which I am sending image
and here is the error
MulterError: Unexpected field
at wrappedFileFilter (D:\web dev\gym website\server_gym\node_modules\multer\index.js:40:19)
at Busboy.<anonymous> (D:\web dev\gym website\server_gym\node_modules\multer\lib\make-middleware.js:114:7)
at Busboy.emit (node:events:394:28)
at Busboy.emit (D:\web dev\gym website\server_gym\node_modules\busboy\lib\main.js:38:33)
at PartStream.<anonymous> (D:\web dev\gym website\server_gym\node_modules\busboy\lib\types\multipart.js:213:13)
at PartStream.emit (node:events:394:28)
at HeaderParser.<anonymous> (D:\web dev\gym website\server_gym\node_modules\dicer\lib\Dicer.js:51:16)
at HeaderParser.emit (node:events:394:28)
at HeaderParser._finish (D:\web dev\gym website\server_gym\node_modules\dicer\lib\HeaderParser.js:68:8)
at SBMH.<anonymous> (D:\web dev\gym website\server_gym\node_modules\dicer\lib\HeaderParser.js:40:12)
CodePudding user response:
You should change the parameter in Postman from image
to file
as you specify the property name in the POST endpoint:
// you specify the `file` as the fieldname
Router.post('/logo', upload.single('file'), (req, res) => {
console.log("working");
//res.json({ file: req.file });
res.send("done");
});
From the docs:
.single(fieldname)
:Accept a single file with the name
fieldname
. The single file will be stored inreq.file
.