Writing image to local server

Question

Update  The accepted answer was good for last year but today I would use the package everyone else uses  https   github com mikeal request    Original  I m trying to grab google s logo and save it to my server with node js   This is what I have right now and doesn t work           var options                 host   google com               port  80              path    images logos ps logo2 png                      var request   http get options            request on  response   function  res                res on  data   function  chunk                    fs writeFile dir  image png   chunk  function  err                        if  err  throw err                      console log  It  s saved                                                       How can I get this working

User · Answer

How about this   var http   require  http     fs   require  fs     options   options         host   www google com         port  80      path    images logos ps logo2 png     var request   http get options  function res      var imagedata        res setEncoding  binary    var chunks        res on  data   function chunk          imagedata    chunk     chunks push chunk       res on  end   function           fs writeFile  logo png   imagedata   binary   function err        var buffer   Buffer concat chunks      fs writeFile  logo png   buffer  function err           if  err  throw err         console log  File saved

User · Answer

I have an easier solution using fs readFileSync   my local image path jpg   This is for reading images from Azure Cognative Services s Vision API  const subscriptionKey    your azure subscrition key   const uriBase        MUST change your location  mine is  eastus          https   eastus api cognitive microsoft com vision v2 0 analyze       Request parameters  const params          visualFeatures    Categories Description Adult Faces        maxCandidates    2        details    Celebrities Landmarks        language    en      const options         uri  uriBase      qs  params      body  fs readFileSync   my local image path jpg       headers             Content-Type    application octet-stream            Ocp-Apim-Subscription-Key    subscriptionKey           request post options   error  response  body    gt    if  error        console log  Error     error       return    let jsonString   JSON stringify JSON parse body   null         body   JSON parse body   if  body code     err       console log  AZURE      body message     console log  Response n    jsonString

User · Answer

A few things happening here    I assume you required fs http  and set the dir variable    google com redirects to www google com  so you re saving the redirect response s body  not the image the response is streamed  that means the  data  event fires many times  not once  you have to save and join all the chunks together to get the full response body since you re getting binary data  you have to set the encoding accordingly on response and writeFile  default is utf8    This should work   var http   require  http       fs   require  fs       options  options         host   www google com      port  80     path    images logos ps logo2 png     var request   http get options  function res       var imagedata          res setEncoding  binary        res on  data   function chunk           imagedata    chunk             res on  end   function            fs writeFile  logo png   imagedata   binary   function err               if  err  throw err             console log  File saved

User · Answer

I suggest you use http-request  so that even redirects are managed   var http   require  http-request    var options    url   http   localhost foo pdf    http get options    path to foo pdf   function  error  result        if  error            console error error         else           console log  File downloaded at      result file

User · Answer

Cleanest way of saving image locally using request           const request   require  request    request  http   link to your image file png   pipe fs createWriteStream  fileName png      If you need to add authentication token in headers do this       const request   require  request    request           url   http   link to your image file png           headers                 X-Token-Auth   TOKEN                   pipe fs createWriteStream  filename png

User · Answer

This thread is old but I wanted to do same things with the https   github com mikeal request  package   Here a working example  var fs        require  fs    var request   require  request       Or with cookies    var request   require  request   defaults  jar  true     request get  url   https   someurl somefile torrent   encoding   binary    function  err  response  body      fs writeFile   tmp test torrent   body   binary   function err        if err        console log err       else       console log  The file was saved

[node.js] Writing image to local server

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