問題描述
我正在制作一個(gè)鏈接到 Google Drive 帳戶的簡(jiǎn)單應(yīng)用程序，然后可以將文件上傳到任何目錄并使用(直接)下載鏈接進(jìn)行響應(yīng).我已經(jīng)獲得了我的 User Credentials 和 DriveService 對(duì)象，但我似乎找不到任何好的示例或文檔.在 APIv3 上.
I'm making a simple Application that Links to a Google Drive Account and then can Upload Files to any Directory and respond with a (direct) download Link. I already got my User Credentials and DriveService objects, but I can't seem to find any good examples or Docs. on the APIv3.
由于我對(duì) OAuth 不是很熟悉，因此我現(xiàn)在要求對(duì)如何上傳包含 byte[] 內(nèi)容的文件進(jìn)行清晰而清晰的解釋.
As I'm not very familiar with OAuth, I'm asking for a nice and clear explanation on how to Upload a File with byte[] content now.
我將應(yīng)用程序鏈接到 Google Drive 帳戶的代碼:(不確定這是否完美)
UserCredential credential;
string dir = Directory.GetCurrentDirectory();
string path = Path.Combine(dir, "credentials.json");
File.WriteAllBytes(path, Properties.Resources.GDJSON);
using(var stream = new FileStream(path, FileMode.Open, FileAccess.Read)) {
string credPath = Path.Combine(dir, "privatecredentials.json");
credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
GoogleClientSecrets.Load(stream).Secrets,
Scopes,
"user",
CancellationToken.None,
new FileDataStore(credPath, true)).Result;
}
// Create Drive API service.
_service = new DriveService(new BaseClientService.Initializer() {
HttpClientInitializer = credential,
ApplicationName = ApplicationName,
});
File.Delete(path);
到目前為止我的上傳代碼:(顯然不起作用)
public void Upload(string name, byte[] content) {
Google.Apis.Drive.v3.Data.File body = new Google.Apis.Drive.v3.Data.File();
body.Name = name;
body.Description = "My description";
body.MimeType = GetMimeType(name);
body.Parents = new List() { new ParentReference() { Id = _parent } };
System.IO.MemoryStream stream = new System.IO.MemoryStream(content);
try {
FilesResource.InsertMediaUpload request = _service.Files.Insert(body, stream, GetMimeType(_uploadFile));
request.Upload();
return request.ResponseBody;
} catch(Exception) { }
}
謝謝！
推薦答案
啟用 Drive API 后，注冊(cè)項(xiàng)目并從 開發(fā)者控制臺(tái)，您可以使用以下代碼來獲得用戶的同意并獲得經(jīng)過身份驗(yàn)證的Drive Service
Once you have enabled your Drive API, registered your project and obtained your credentials from the Developer Consol, you can use the following code for recieving the user's consent and obtaining an authenticated Drive Service
string[] scopes = new string[] { DriveService.Scope.Drive,
DriveService.Scope.DriveFile};
var clientId = "xxxxxx"; // From https://console.developers.google.com
var clientSecret = "xxxxxxx"; // From https://console.developers.google.com
// here is where we Request the user to give us access, or use the Refresh Token that was previously stored in %AppData%
var credential = GoogleWebAuthorizationBroker.AuthorizeAsync(new ClientSecrets { ClientId = clientId,
ClientSecret = clientSecret},
scopes,
Environment.UserName,
CancellationToken.None,
new FileDataStore("MyAppsToken")).Result;
//Once consent is recieved, your token will be stored locally on the AppData directory, so that next time you wont be prompted for consent.
DriveService service = new DriveService(new BaseClientService.Initializer()
{
HttpClientInitializer = credential,
ApplicationName = "MyAppName",
});
service.HttpClient.Timeout = TimeSpan.FromMinutes(100);
//Long Operations like file uploads might timeout. 100 is just precautionary value, can be set to any reasonable value depending on what you use your service for.
以下是上傳到云端硬盤的工作代碼.
Following is a working piece of code for uploading to Drive.
// _service: Valid, authenticated Drive service
// _uploadFile: Full path to the file to upload
// _parent: ID of the parent directory to which the file should be uploaded
public static Google.Apis.Drive.v2.Data.File uploadFile(DriveService _service, string _uploadFile, string _parent, string _descrp = "Uploaded with .NET!")
{
if (System.IO.File.Exists(_uploadFile))
{
File body = new File();
body.Title = System.IO.Path.GetFileName(_uploadFile);
body.Description = _descrp;
body.MimeType = GetMimeType(_uploadFile);
body.Parents = new List<ParentReference>() { new ParentReference() { Id = _parent } };
byte[] byteArray = System.IO.File.ReadAllBytes(_uploadFile);
System.IO.MemoryStream stream = new System.IO.MemoryStream(byteArray);
try
{
FilesResource.InsertMediaUpload request = _service.Files.Insert(body, stream, GetMimeType(_uploadFile));
request.Upload();
return request.ResponseBody;
}
catch(Exception e)
{
MessageBox.Show(e.Message,"Error Occured");
}
}
else
{
MessageBox.Show("The file does not exist.","404");
}
}
這是確定 MimeType 的小函數(shù):
Here's the little function for determining the MimeType:
private static string GetMimeType(string fileName)
{
string mimeType = "application/unknown";
string ext = System.IO.Path.GetExtension(fileName).ToLower();
Microsoft.Win32.RegistryKey regKey = Microsoft.Win32.Registry.ClassesRoot.OpenSubKey(ext);
if (regKey != null && regKey.GetValue("Content Type") != null)
mimeType = regKey.GetValue("Content Type").ToString();
return mimeType;
}
另外，您可以注冊(cè)ProgressChanged事件并獲取上傳狀態(tài).
Additionally, you can register for the ProgressChanged event and get the upload status.
request.ProgressChanged += UploadProgessEvent;
request.ChunkSize = FilesResource.InsertMediaUpload.MinimumChunkSize; // Minimum ChunkSize allowed by Google is 256*1024 bytes. ie 256KB.
和
private void UploadProgessEvent(Google.Apis.Upload.IUploadProgress obj)
{
label1.Text = ((obj.ByteSent*100)/TotalSize).ToString() + "%";
// do updation stuff
}
上傳就差不多了..
來源.
這篇關(guān)于C# Google Drive APIv3 上傳文件的文章就介紹到這了，希望我們推薦的答案對(duì)大家有所幫助，也希望大家多多支持html5模板網(wǎng)！