使用Dart进行简单的Google云端硬盘访问

Question

我试图从谷歌驱动器Dart读取基本文本文件(无需授权).下面的代码返回400错误.如果删除API_KEY则会出现403错误.我可以将文件ID输入到Google get file参考页面,它将正确返回元数据.

任何想法都会很棒.谢谢

final url = "https://www.googleapis.com/drive/v2/files/FILE?key={API_KEY}";

  var request = new HttpRequest();

  request.on.loadEnd.add( (Event e) 
  {
    if (request.status == 200) 
    {
      var data = JSON.parse(request.responseText);
      query("#file").text = data;
    } 
    else 
    {
      query("#file").text = "Error ${request.status}: ${request.statusText}";
    }
  });

  request.open("GET", url);
  request.send();

Answer 1

最好的办法是使用drive_v2_api_client.

这可以通过使用DartEditor进行localhost测试的以下设置来设置您的谷歌控制台apis来完成

Redirect URIs:  http://127.0.0.1:3030/oauth2callback
JavaScript origins: http://127.0.0.1:3030

然后通过在pubspec.yaml文件中添加以下依赖项来使用dart驱动包drive_v2_api_client.

dependencies:
  drive_v2_api_client:
    git: git://github.com/Scarygami/dart_drive_v2_api_client.git

此示例允许客户端在客户端使用客户端ID进行身份验证后获取fileid.

import 'dart:html';
import 'dart:json';
import "package:drive_v2_api_client/drive_v2_api_client.dart" as drivelib;
import "package:google_oauth2_client/google_oauth2_client.dart";

final CLIENT_ID = "<YOUR CLIENT ID FROM CONSOLE API>";
final SCOPES = [drivelib.Drive.DRIVE_FILE_SCOPE];

void main() {
  var fileid = "1B_cGCNFjnK3dDriTMLsSS_zExfGFkQeewb3dcP4xSPg";
  var auth = new OAuth2(CLIENT_ID, SCOPES);
  var drive = new drivelib.Drive(auth);
  drive.makeAuthRequests = true;
  var loginButton = query("#login");
  var output = query("#text");

  loginButton.on.click.add((Event e) {
    auth.login().then((token) {
      output.appendHtml("Got Token ${token.type} ${token.data}<br><br>");

      drive.files.get(fileid)
      ..then((data) {
        output.appendHtml(data.toString());
      });

    });
  });
}

您可以在https://gist.github.com/4588427找到工作示例的所有源代码