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POUpload a file to Google Drive API using HTML5
 

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  1. POUpload a file to Google Drive API using HTML5
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    <p>I'm creating a Google Chrome extension which use Google Drive API. I have to upload a file with HTML5.</p> <p>For text files, there is no problem. But when I want to upload a binary file, there are always errors.</p> <p>So when I upload a file using the FileReader in HTML5 as BinaryString, my image is corrupted, I can't read it.</p> <p>And when I use Base64 encoding (with the header in the body part "Content-Transfer-Encoding: base64"), I have a 400 Bad Request -> Malformed multipart body.</p> <p>Can you help me please ? Thanks :)</p> <p>PS: I don't want to use Google Drive SDK, I prefer write all the code.</p> <pre><code>var bb, reader; var meta = { "title": "mozilla.png", "mimeType": "image/png", "description": "Mozilla Official logo" }; var xhr = new XMLHttpRequest(); xhr.open('GET', 'https://developer.mozilla.org/media/img/mdn-logo-sm.png', true); xhr.responseType = 'arraybuffer'; xhr.onload = function(e){ if(this.status == 200){ bb = new WebKitBlobBuilder(); bb.append(this.response); console.log('Download OK'); reader = new FileReader(); reader.readAsDataURL(bb.getBlob('image/png')); reader.onloadend = function(e){ console.log('Reader OK'); var bound = 287032396531387; var parts = []; parts.push('--' + bound); parts.push('Content-Type: application/json'); parts.push(''); parts.push(JSON.stringify(meta)); parts.push('--' + bound); parts.push('Content-Type: image/png'); parts.push('Content-Transfer-Encoding: base64'); parts.push(''); parts.push(reader.result); parts.push('--' + bound + '--'); var xhr = new XMLHttpRequest(); xhr.open("POST", "https://www.googleapis.com/upload/drive/v2/files?uploadType=multipart", true); xhr.setRequestHeader("Authorization", "Bearer token123456"); xhr.setRequestHeader("Content-Type", "multipart/mixed; boundary=" + bound); xhr.onload = function(e){ console.log("DRIVE OK", this, e); }; xhr.send(parts.join("\r\n")); } } }; xhr.send(); </code></pre> <p>For Binary Upload, just modify this line :</p> <pre><code>reader.readAsDataURL(bb.getBlob('image/png')); </code></pre> <p>by that</p> <pre><code>reader.readAsBinaryString(bb.getBlob('image/png')); </code></pre> <p>and delete this line :</p> <pre><code>parts.push('Content-Transfer-Encoding: base64'); </code></pre> <p>I tried to create a file by sending the metadata first and upload the content after like in this <a href="https://stackoverflow.com/questions/10317638/inserting-file-to-google-drive-through-api/10323612#10323612">post</a> and I always get a 404 error for uploading the content, but this is another story...</p>
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