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    <p>Until a multipart encoding parser is available, you can use <a href="http://www.w3.org/TR/file-upload/" rel="nofollow noreferrer">File API</a> on client to read and upload file content as <a href="http://en.wikipedia.org/wiki/Data_URI_scheme" rel="nofollow noreferrer">dataUrl</a>. This API has quite good support in browsers ( see <a href="http://caniuse.com/filereader" rel="nofollow noreferrer">http://caniuse.com/filereader</a> ).</p> <p>On client side :</p> <pre class="lang-dart prettyprint-override"><code>import 'dart:html'; main() { InputElement uploadInput = query('#upload'); uploadInput.onChange.listen((e) { // read file content as dataURL final files = uploadInput.files; if (files.length == 1) { final file = files[0]; final reader = new FileReader(); reader.onLoad.listen((e) { sendDatas(reader.result); }); reader.readAsDataUrl(file); } }); } /// send data to server sendDatas(dynamic data) { final req = new HttpRequest(); req.onReadyStateChange.listen((Event e) { if (req.readyState == HttpRequest.DONE &amp;&amp; (req.status == 200 || req.status == 0)) { window.alert("upload complete"); } }); req.open("POST", "http://127.0.0.1:8080/upload"); req.send(data); } </code></pre> <p>And on server side :</p> <pre class="lang-dart prettyprint-override"><code>import 'dart:io'; main() { final server = new HttpServer(); server.listen('127.0.0.1', 8080); server.addRequestHandler((request) =&gt; request.path == '/upload' &amp;&amp; request.method.toLowerCase() == 'post' , (HttpRequest request, HttpResponse response) { _readBody(request, (body) { // handle your dataURL // example with image : data:image/jpeg;base64,/9j/4S2YRXhpZgAATU0AK... // return result response.statusCode = HttpStatus.CREATED; response.contentLength = 0; response.outputStream.close(); }); }); } /// Read body of [request] and call [handleBody] when complete. _readBody(HttpRequest request, void handleBody(String body)) { String bodyString = ""; // request body byte data final completer = new Completer(); final sis = new StringInputStream(request.inputStream, Encoding.UTF_8); sis.onData = (){ bodyString = bodyString.concat(sis.read()); }; sis.onClosed = () { completer.complete(""); }; sis.onError = (Exception e) { print('exeption occured : ${e.toString()}'); }; // process the request and send a response completer.future.then((_){ handleBody(bodyString); }); } </code></pre> <p>References :</p> <ul> <li><a href="http://www.html5rocks.com/en/tutorials/file/dndfiles/" rel="nofollow noreferrer">Reading files in JavaScript using the File APIs</a></li> </ul>
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    1. POHow to upload a file in Dart?
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    1. USGünter Zöchbauer
    1. USAlexandre Ardhuin
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    1. POHow to upload a file in Dart?
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    1. COThanks Alexandre, however do you know how to decode the base64 string and save it to file in Dart? been looking for php alternative base64_decode
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      1. USsamer.ali
    2. COTo write a file in dart, you can have a look at http://www.dartlang.org/articles/io/ . Base64 was only for the example. But unfortunatly, base64ToBytes is not available in dart for the moment ( http://dartbug.com/2458 ) To work around you could perhaps use `reader.readAsText(file)` or `reader.readAsBinaryString(file)` instead of `reader.readAsDataURL(file)`.
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    3. COThanks for your Help Alexandre, i developed my own decoder on the server side for the datauri and base64, and it's working great, i will try to share it sometime.
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