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
          1






          active

          oldest

          votes


















          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























            Your Answer






            StackExchange.ifUsing("editor", function () {
            StackExchange.using("externalEditor", function () {
            StackExchange.using("snippets", function () {
            StackExchange.snippets.init();
            });
            });
            }, "code-snippets");

            StackExchange.ready(function() {
            var channelOptions = {
            tags: "".split(" "),
            id: "1"
            };
            initTagRenderer("".split(" "), "".split(" "), channelOptions);

            StackExchange.using("externalEditor", function() {
            // Have to fire editor after snippets, if snippets enabled
            if (StackExchange.settings.snippets.snippetsEnabled) {
            StackExchange.using("snippets", function() {
            createEditor();
            });
            }
            else {
            createEditor();
            }
            });

            function createEditor() {
            StackExchange.prepareEditor({
            heartbeatType: 'answer',
            autoActivateHeartbeat: false,
            convertImagesToLinks: true,
            noModals: true,
            showLowRepImageUploadWarning: true,
            reputationToPostImages: 10,
            bindNavPrevention: true,
            postfix: "",
            imageUploader: {
            brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
            contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
            allowUrls: true
            },
            onDemand: true,
            discardSelector: ".discard-answer"
            ,immediatelyShowMarkdownHelp:true
            });


            }
            });














            draft saved

            draft discarded


















            StackExchange.ready(
            function () {
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53292778%2fpython-and-node-image-upload%23new-answer', 'question_page');
            }
            );

            Post as a guest















            Required, but never shown

























            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            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






























                    draft saved

                    draft discarded




















































                    Thanks for contributing an answer to Stack Overflow!


                    • Please be sure to answer the question. Provide details and share your research!

                    But avoid



                    • Asking for help, clarification, or responding to other answers.

                    • Making statements based on opinion; back them up with references or personal experience.


                    To learn more, see our tips on writing great answers.




                    draft saved


                    draft discarded














                    StackExchange.ready(
                    function () {
                    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53292778%2fpython-and-node-image-upload%23new-answer', 'question_page');
                    }
                    );

                    Post as a guest















                    Required, but never shown





















































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown

































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown







                    Popular posts from this blog

                    Bressuire

                    Vorschmack

                    Quarantine