Google选择器选择了文件回调 [英] Google picker selected file callback

问题描述

我已经集成并尝试使用Google Picker API Google选择器api 但是我可以将回调转换为文件吗?这样我就可以将文件上传到服务器了

i have integrated and try to use the google picker api google picker api but can i turn the callback into file ? so i can upload the file to my server

function pickerCallback(data) { 
  if (data.action == google.picker.Action.PICKED) {
    var fileId = data.docs[0].id; alert('The user selected: ' + fileId); 
  } 
} 

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推荐答案

一旦有了 fileId ，就可以按照 XML HttpRequests .

示例:

//provided you already have the following line from previous steps:
oauthToken = authResult.access_token;

var doc = data[google.picker.Response.DOCUMENTS][0];
var mimeType = doc[google.picker.Document.MIME_TYPE];

var xhr = new XMLHttpRequest();
xhr.open("GET", "https://www.googleapis.com/drive/v3/files/"+fileId+'?alt=media', true);
xhr.setRequestHeader('Authorization','Bearer '+oauthToken);
xhr.responseType = 'arraybuffer'
xhr.onload = function(){
    var base64 = 'data:' + mimeType + ';base64,' + base64ArrayBuffer(xhr.response);
//now you have the file content as binary data (ArrayBuffer) - proceed as desired
}
xhr.send();

注意:

您可以将 xhr.responseType 修改为例如 blob 或其他 responseType 根据您的情况.

you can modify xhr.responseType to e.g. blob or another responseType depending on your situation.

或者，您也可以执行获取请求转到"https://www.googleapis.com/drive/v3/files"以获取文件blob.

Alternatively you could also perform a Fetch request to 'https://www.googleapis.com/drive/v3/files' to obtain the file blob.

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