Python and Node : Image Upload












0















I'm pretty new to Python and Node, I'm attempting to do a simple image upload. Python for the client side and Node for the server side. The image is uploaded and looks to be the correct size, but when I try to open or preview the image I get a prompt saying the following :



"The file could not be opened . It may be damaged or use a file format that Preview doesn’t recognise"



NOTE* I was able to get the upload to work using multer, see my posted answer. However , I would still I like to figure out why image open or image preview fails.



Client code (test locally) :



import requests

url = "http://localhost:3000/upload"
image = open('test1.jpg','rb').read()
file = {'file': image}
r = requests.post(url, files=file)

print(r.status_code)
print(r.text)




Server code snippet :



const Fs = require('fs')

...
...
router.post('/upload', (req, res) =>{
var data = '';
req.setEncoding('binary');
req.on('data', function(chunk) {
data += chunk;
});

req.on('end', function(){
Fs.writeFile("tester.jpg", data, 'binary', function(err) {
if(err) throw err

res.send("Image uploaded ...");

});
})
})












share|improve this question





























    0















    I'm pretty new to Python and Node, I'm attempting to do a simple image upload. Python for the client side and Node for the server side. The image is uploaded and looks to be the correct size, but when I try to open or preview the image I get a prompt saying the following :



    "The file could not be opened . It may be damaged or use a file format that Preview doesn’t recognise"



    NOTE* I was able to get the upload to work using multer, see my posted answer. However , I would still I like to figure out why image open or image preview fails.



    Client code (test locally) :



    import requests

    url = "http://localhost:3000/upload"
    image = open('test1.jpg','rb').read()
    file = {'file': image}
    r = requests.post(url, files=file)

    print(r.status_code)
    print(r.text)




    Server code snippet :



    const Fs = require('fs')

    ...
    ...
    router.post('/upload', (req, res) =>{
    var data = '';
    req.setEncoding('binary');
    req.on('data', function(chunk) {
    data += chunk;
    });

    req.on('end', function(){
    Fs.writeFile("tester.jpg", data, 'binary', function(err) {
    if(err) throw err

    res.send("Image uploaded ...");

    });
    })
    })












    share|improve this question



























      0












      0








      0








      I'm pretty new to Python and Node, I'm attempting to do a simple image upload. Python for the client side and Node for the server side. The image is uploaded and looks to be the correct size, but when I try to open or preview the image I get a prompt saying the following :



      "The file could not be opened . It may be damaged or use a file format that Preview doesn’t recognise"



      NOTE* I was able to get the upload to work using multer, see my posted answer. However , I would still I like to figure out why image open or image preview fails.



      Client code (test locally) :



      import requests

      url = "http://localhost:3000/upload"
      image = open('test1.jpg','rb').read()
      file = {'file': image}
      r = requests.post(url, files=file)

      print(r.status_code)
      print(r.text)




      Server code snippet :



      const Fs = require('fs')

      ...
      ...
      router.post('/upload', (req, res) =>{
      var data = '';
      req.setEncoding('binary');
      req.on('data', function(chunk) {
      data += chunk;
      });

      req.on('end', function(){
      Fs.writeFile("tester.jpg", data, 'binary', function(err) {
      if(err) throw err

      res.send("Image uploaded ...");

      });
      })
      })












      share|improve this question
















      I'm pretty new to Python and Node, I'm attempting to do a simple image upload. Python for the client side and Node for the server side. The image is uploaded and looks to be the correct size, but when I try to open or preview the image I get a prompt saying the following :



      "The file could not be opened . It may be damaged or use a file format that Preview doesn’t recognise"



      NOTE* I was able to get the upload to work using multer, see my posted answer. However , I would still I like to figure out why image open or image preview fails.



      Client code (test locally) :



      import requests

      url = "http://localhost:3000/upload"
      image = open('test1.jpg','rb').read()
      file = {'file': image}
      r = requests.post(url, files=file)

      print(r.status_code)
      print(r.text)




      Server code snippet :



      const Fs = require('fs')

      ...
      ...
      router.post('/upload', (req, res) =>{
      var data = '';
      req.setEncoding('binary');
      req.on('data', function(chunk) {
      data += chunk;
      });

      req.on('end', function(){
      Fs.writeFile("tester.jpg", data, 'binary', function(err) {
      if(err) throw err

      res.send("Image uploaded ...");

      });
      })
      })









      node.js python-3.x






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 14 '18 at 16:05







      Fabii

















      asked Nov 14 '18 at 3:29









      FabiiFabii

      1,80183778




      1,80183778
























          1 Answer
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          oldest

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          0














          I was able to sort it out using multer : npm multer





          var Storage = multer.diskStorage({
          destination: function(req, file, callback) {
          callback(null, "./images");
          },
          filename: function(req, file, callback) {
          callback(null, file.fieldname + "_" + Date.now() + "_" + file.originalname);
          }
          });

          var upload = multer({
          storage: Storage
          }).single('file');

          router.post('/upload', (req, res) =>{
          console.log("upload ...");

          upload(req, res, (err) =>{
          if(err){
          console.log(err);
          res.send("Failed")
          }
          else{
          console.log(req.file);
          res.send("Uploaded ...");
          }
          });
          })





          share|improve this answer























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            1 Answer
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            active

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            1 Answer
            1






            active

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            active

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            active

            oldest

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            0














            I was able to sort it out using multer : npm multer





            var Storage = multer.diskStorage({
            destination: function(req, file, callback) {
            callback(null, "./images");
            },
            filename: function(req, file, callback) {
            callback(null, file.fieldname + "_" + Date.now() + "_" + file.originalname);
            }
            });

            var upload = multer({
            storage: Storage
            }).single('file');

            router.post('/upload', (req, res) =>{
            console.log("upload ...");

            upload(req, res, (err) =>{
            if(err){
            console.log(err);
            res.send("Failed")
            }
            else{
            console.log(req.file);
            res.send("Uploaded ...");
            }
            });
            })





            share|improve this answer




























              0














              I was able to sort it out using multer : npm multer





              var Storage = multer.diskStorage({
              destination: function(req, file, callback) {
              callback(null, "./images");
              },
              filename: function(req, file, callback) {
              callback(null, file.fieldname + "_" + Date.now() + "_" + file.originalname);
              }
              });

              var upload = multer({
              storage: Storage
              }).single('file');

              router.post('/upload', (req, res) =>{
              console.log("upload ...");

              upload(req, res, (err) =>{
              if(err){
              console.log(err);
              res.send("Failed")
              }
              else{
              console.log(req.file);
              res.send("Uploaded ...");
              }
              });
              })





              share|improve this answer


























                0












                0








                0







                I was able to sort it out using multer : npm multer





                var Storage = multer.diskStorage({
                destination: function(req, file, callback) {
                callback(null, "./images");
                },
                filename: function(req, file, callback) {
                callback(null, file.fieldname + "_" + Date.now() + "_" + file.originalname);
                }
                });

                var upload = multer({
                storage: Storage
                }).single('file');

                router.post('/upload', (req, res) =>{
                console.log("upload ...");

                upload(req, res, (err) =>{
                if(err){
                console.log(err);
                res.send("Failed")
                }
                else{
                console.log(req.file);
                res.send("Uploaded ...");
                }
                });
                })





                share|improve this answer













                I was able to sort it out using multer : npm multer





                var Storage = multer.diskStorage({
                destination: function(req, file, callback) {
                callback(null, "./images");
                },
                filename: function(req, file, callback) {
                callback(null, file.fieldname + "_" + Date.now() + "_" + file.originalname);
                }
                });

                var upload = multer({
                storage: Storage
                }).single('file');

                router.post('/upload', (req, res) =>{
                console.log("upload ...");

                upload(req, res, (err) =>{
                if(err){
                console.log(err);
                res.send("Failed")
                }
                else{
                console.log(req.file);
                res.send("Uploaded ...");
                }
                });
                })






                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 14 '18 at 4:21









                FabiiFabii

                1,80183778




                1,80183778






























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