Reading png image from request using body-parser and Express
I am sending the following request to my server using postman:
I try to access the image in my application using the following code:
app.js
var express = require('express');
var bodyParser = require('body-parser');
var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var app = express();
app.use(bodyParser.raw({
type: 'image/png',
limit: '10mb'
}));
app.use('/', indexRouter);
app.use('/users', usersRouter);
module.exports = app;
index.js (router)
var express = require('express');
const router = express.Router();
var Jimp = require('jimp');
/* GET home page. */
router.get('/', function(req, res) {
res.render('index', { title: 'Express' });
});
router.post('/a', function(req, res) {
var image = req.body;
try{
Jimp.read(image, (err, input) => {
if (err) throw err;
input.sepia();
input.getBuffer(Jimp.AUTO, (err, output) => {
if(err) throw err;
res.writeHead(200, {'Content-Type': 'image/png' });
return res.end(output, 'binary');
});
});
}catch (err){
return res.status(400).send(`Error: ${err.message}`).end();
}
});
module.exports = router;
I was first using a form (with the help of express-fileupload library) to send the image and this worked fine, so I know the problem has to be somewhere before the line var image = req.body.
For the Jimp functions (image processing library) to work, the image has to be a buffer representing the png image.
When running console.log(image), the console outputs {}.
Can anybody show me a way to read the png as a buffer when it is sent as a Binary file?
node.js express post binary body-parser
asked Nov 21 '18 at 16:25
Elias
494
add a comment |
I am sending the following request to my server using postman:
I try to access the image in my application using the following code:
app.js
var express = require('express');
var bodyParser = require('body-parser');
var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var app = express();
app.use(bodyParser.raw({
type: 'image/png',
limit: '10mb'
}));
app.use('/', indexRouter);
app.use('/users', usersRouter);
module.exports = app;
index.js (router)
var express = require('express');
const router = express.Router();
var Jimp = require('jimp');
/* GET home page. */
router.get('/', function(req, res) {
res.render('index', { title: 'Express' });
});
router.post('/a', function(req, res) {
var image = req.body;
try{
Jimp.read(image, (err, input) => {
if (err) throw err;
input.sepia();
input.getBuffer(Jimp.AUTO, (err, output) => {
if(err) throw err;
res.writeHead(200, {'Content-Type': 'image/png' });
return res.end(output, 'binary');
});
});
}catch (err){
return res.status(400).send(`Error: ${err.message}`).end();
}
});
module.exports = router;
I was first using a form (with the help of express-fileupload library) to send the image and this worked fine, so I know the problem has to be somewhere before the line var image = req.body.
For the Jimp functions (image processing library) to work, the image has to be a buffer representing the png image.
When running console.log(image), the console outputs {}.
Can anybody show me a way to read the png as a buffer when it is sent as a Binary file?
node.js express post binary body-parser
asked Nov 21 '18 at 16:25
Elias
494
add a comment |
I am sending the following request to my server using postman:
I try to access the image in my application using the following code:
app.js
var express = require('express');
var bodyParser = require('body-parser');
var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var app = express();
app.use(bodyParser.raw({
type: 'image/png',
limit: '10mb'
}));
app.use('/', indexRouter);
app.use('/users', usersRouter);
module.exports = app;
index.js (router)
var express = require('express');
const router = express.Router();
var Jimp = require('jimp');
/* GET home page. */
router.get('/', function(req, res) {
res.render('index', { title: 'Express' });
});
router.post('/a', function(req, res) {
var image = req.body;
try{
Jimp.read(image, (err, input) => {
if (err) throw err;
input.sepia();
input.getBuffer(Jimp.AUTO, (err, output) => {
if(err) throw err;
res.writeHead(200, {'Content-Type': 'image/png' });
return res.end(output, 'binary');
});
});
}catch (err){
return res.status(400).send(`Error: ${err.message}`).end();
}
});
module.exports = router;
I was first using a form (with the help of express-fileupload library) to send the image and this worked fine, so I know the problem has to be somewhere before the line var image = req.body.
For the Jimp functions (image processing library) to work, the image has to be a buffer representing the png image.
When running console.log(image), the console outputs {}.
Can anybody show me a way to read the png as a buffer when it is sent as a Binary file?
node.js express post binary body-parser
asked Nov 21 '18 at 16:25
Elias
494
I am sending the following request to my server using postman:
I try to access the image in my application using the following code:
app.js
var express = require('express');
var bodyParser = require('body-parser');
var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var app = express();
app.use(bodyParser.raw({
type: 'image/png',
limit: '10mb'
}));
app.use('/', indexRouter);
app.use('/users', usersRouter);
module.exports = app;
index.js (router)
var express = require('express');
const router = express.Router();
var Jimp = require('jimp');
/* GET home page. */
router.get('/', function(req, res) {
res.render('index', { title: 'Express' });
});
router.post('/a', function(req, res) {
var image = req.body;
try{
Jimp.read(image, (err, input) => {
if (err) throw err;
input.sepia();
input.getBuffer(Jimp.AUTO, (err, output) => {
if(err) throw err;
res.writeHead(200, {'Content-Type': 'image/png' });
return res.end(output, 'binary');
});
});
}catch (err){
return res.status(400).send(`Error: ${err.message}`).end();
}
});
module.exports = router;
I was first using a form (with the help of express-fileupload library) to send the image and this worked fine, so I know the problem has to be somewhere before the line var image = req.body.
For the Jimp functions (image processing library) to work, the image has to be a buffer representing the png image.
When running console.log(image), the console outputs {}.
Can anybody show me a way to read the png as a buffer when it is sent as a Binary file?
node.js express post binary body-parser
node.js express post binary body-parser
asked Nov 21 '18 at 16:25
Elias
494
asked Nov 21 '18 at 16:25
Elias
494
asked Nov 21 '18 at 16:25
Elias
494
asked Nov 21 '18 at 16:25
Elias
494
asked Nov 21 '18 at 16:25
Elias
494
494
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
Nevermind, I just had to change the Content-Type header in my request to image/png -.-
answered Nov 21 '18 at 16:56
Elias
494
add a comment |
can you rewrite function with lib multer?
const multer = require('multer')
const storage = multer.memoryStorage()
const upload = multer({ storage: storage })
router.post('/a', upload.single('image'), function(req, res, next) {
const image = req.file.buffer
});
or with formidable?
var formidable = require('formidable' );
router.post('/a', (req, res) => {
const form = new formidable.IncomingForm();
form.parse(req, (error, fields, files) => {
const image = files.image;
})
});
answered Nov 21 '18 at 17:12
Jawlon Rodriguez
3811216
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
Nevermind, I just had to change the Content-Type header in my request to image/png -.-
answered Nov 21 '18 at 16:56
Elias
494
add a comment |
Nevermind, I just had to change the Content-Type header in my request to image/png -.-
answered Nov 21 '18 at 16:56
Elias
494
add a comment |
Nevermind, I just had to change the Content-Type header in my request to image/png -.-
answered Nov 21 '18 at 16:56
Elias
494
Nevermind, I just had to change the Content-Type header in my request to image/png -.-
answered Nov 21 '18 at 16:56
Elias
494
answered Nov 21 '18 at 16:56
Elias
494
answered Nov 21 '18 at 16:56
Elias
494
answered Nov 21 '18 at 16:56
Elias
494
494
add a comment |
add a comment |
can you rewrite function with lib multer?
const multer = require('multer')
const storage = multer.memoryStorage()
const upload = multer({ storage: storage })
router.post('/a', upload.single('image'), function(req, res, next) {
const image = req.file.buffer
});
or with formidable?
var formidable = require('formidable' );
router.post('/a', (req, res) => {
const form = new formidable.IncomingForm();
form.parse(req, (error, fields, files) => {
const image = files.image;
})
});
answered Nov 21 '18 at 17:12
Jawlon Rodriguez
3811216
add a comment |
can you rewrite function with lib multer?
const multer = require('multer')
const storage = multer.memoryStorage()
const upload = multer({ storage: storage })
router.post('/a', upload.single('image'), function(req, res, next) {
const image = req.file.buffer
});
or with formidable?
var formidable = require('formidable' );
router.post('/a', (req, res) => {
const form = new formidable.IncomingForm();
form.parse(req, (error, fields, files) => {
const image = files.image;
})
});
answered Nov 21 '18 at 17:12
Jawlon Rodriguez
3811216
add a comment |
can you rewrite function with lib multer?
const multer = require('multer')
const storage = multer.memoryStorage()
const upload = multer({ storage: storage })
router.post('/a', upload.single('image'), function(req, res, next) {
const image = req.file.buffer
});
or with formidable?
var formidable = require('formidable' );
router.post('/a', (req, res) => {
const form = new formidable.IncomingForm();
form.parse(req, (error, fields, files) => {
const image = files.image;
})
});
answered Nov 21 '18 at 17:12
Jawlon Rodriguez
3811216
can you rewrite function with lib multer?
const multer = require('multer')
const storage = multer.memoryStorage()
const upload = multer({ storage: storage })
router.post('/a', upload.single('image'), function(req, res, next) {
const image = req.file.buffer
});
or with formidable?
var formidable = require('formidable' );
router.post('/a', (req, res) => {
const form = new formidable.IncomingForm();
form.parse(req, (error, fields, files) => {
const image = files.image;
})
});
answered Nov 21 '18 at 17:12
Jawlon Rodriguez
3811216
answered Nov 21 '18 at 17:12
Jawlon Rodriguez
3811216
answered Nov 21 '18 at 17:12
Jawlon Rodriguez
3811216
answered Nov 21 '18 at 17:12
Jawlon Rodriguez
3811216
3811216
add a comment |
add a comment |
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