使用 REST API 将文件上传到 Onedrive

我正在尝试使用其 REST API 将文件上传到 OneDrive。这就是我试图根据以下位置提供的文档来完成的任务：OneDrive 休息 API http://msdn.microsoft.com/en-us/library/dn659726.aspx#upload_a_file:

POST https://apis.live.net/v5.0/me/skydrive/files?access_token=ACCESS_TOKEN
Content-Type: multipart/form-data; boundary=A300x

--A300x
Content-Disposition: form-data; name="file"; filename="HelloWorld.txt"
Content-Type: application/octet-stream

Hello, World!
--A300x--

这就是我所拥有的：

Uri destination = new Uri(string.Format("https://apis.live.net/v5.0/{0}/files?", folder.ID));

BackgroundUploader uploader = new BackgroundUploader ();
uploader.SetRequestHeader("Authorization", "Bearer " + account.AccessToken);
uploader.SetRequestHeader("Content-Type", "multipart/form-data; boundary=\"foo_bar_baz\"");

List<BackgroundTransferContentPart> parts = new List<BackgroundTransferContentPart>();

BackgroundTransferContentPart metaDataPart = new BackgroundTransferContentPart();
metaDataPart.SetHeader("Content-Disposition", "form-data; name=\"file\";filename=\""+content.Name+"\"");
parts.Add(metaDataPart);

BackgroundTransferContentPart contentPart = new BackgroundTransferContentPart();
contentPart.SetHeader("Content-Type", content.ContentType);
// content is a StorageFile
contentPart.SetFile(content);

response.UploadOperation = await uploader.CreateUploadAsync(destination, parts, "form-data", "foo_bar_baz");

下面的这一行会导致访问冲突错误并且 Windows 应用商店应用程序崩溃：

response.UploadOperation = await uploader.CreateUploadAsync(destination, parts, "form-data", "foo_bar_baz");

您正在创建两个BackgroundTransferContentPart并且只将拳头添加到您的“列表”中。

我认为你只需要一个，像这样：

List<BackgroundTransferContentPart> parts = new List<BackgroundTransferContentPart>();

BackgroundTransferContentPart metaDataPart = new BackgroundTransferContentPart();
metaDataPart.SetHeader("Content-Disposition",
    "form-data; name=\"file\";filename=\"" + content.Name + "\"");
metaDataPart.SetHeader("Content-Type", content.ContentType);
metaDataPart.SetFile(content);
parts.Add(metaDataPart);

UPDATE:好的，上面的代码修复了访问冲突问题。为什么你400 错误是一个谜 https://stackoverflow.com/questions/26225335/the-request-entity-body-has-an-incorrect-value-in-the-content-disposition-head.

但将文件上传到 OneDrive 的另一种方法是使用PUT method:

Uri putUri = new Uri(string.Format("https://apis.live.net/v5.0/{0}/files/{1}",
    "folder.a4fb14adbccd1917.A4FB14ADBCCD1917!32089",
    content.Name));

BackgroundUploader uploader = new BackgroundUploader();
uploader.SetRequestHeader("Authorization", "Bearer " + accessToken);
uploader.Method = "PUT";

UploadOperation putOperation = uploader.CreateUpload(putUri, content);
await putOperation.StartAsync();

你有没有尝试过PUT?