Question

如何使用drive api从get请求中获取单个文件名？

我已经提出了请求，但那里没有关于该文件的元数据，我只能下载它。

var fileId = "0BwwA4oUTeiV1UVNwOHItT0xfa2M";
var request = driveService.Files.Get(fileId);

显然，这会根据此doc

在响应中返回files.get

我只想下载一个文件并显示其名称，而不仅仅是其ID

Answer 1

对于Google Drive V3：

C＃：
string f = driveService.Files.Get(fileId).Execute().Name;

VB：
Dim f As String = driveService.Files.Get(fileId).Execute().Name

Answer 2

您可以从Title类的File属性中获取文件名：

string FileName = service.Files.Get(FileId).Execute().Title;

和下载，

// DriveService _service: a valid Authendicated DriveService
// Google.Apis.Drive.v2.Data.File _fileResource: Resource of the file to download. (from service.Files.Get(FileId).Execute();)  
// string _saveTo: Full file path to save the file

public static void downloadFile(DriveService _service, File _fileResource, string _saveTo)
{
    if (!String.IsNullOrEmpty(_fileResource.DownloadUrl))
    {
        try
        {
            var x = _service.HttpClient.GetByteArrayAsync(_fileResource.DownloadUrl);
            byte[] arrBytes = x.Result;
            System.IO.File.WriteAllBytes(_saveTo, arrBytes);
        }
        catch(Exception e)
        {
            MessageBox.Show(e.Message, "Error Occured", MessageBoxButtons.OK, MessageBoxIcon.Error);
            Environment.Exit(0);
        }
    }
}

Answer 3

试试这个

    /// 
    /// Download a file
    /// Documentation: https://developers.google.com/drive/v2/reference/files/get
    /// 
    /// a Valid authenticated DriveService
    /// File resource of the file to download
    /// location of where to save the file including the file name to save it as.
    /// 
    public static Boolean downloadFile(DriveService _service, File _fileResource, string _saveTo)
    {

        if (!String.IsNullOrEmpty(_fileResource.DownloadUrl))
        {
            try
            {
                var x = _service.HttpClient.GetByteArrayAsync(_fileResource.DownloadUrl );
                byte[] arrBytes = x.Result;
                System.IO.File.WriteAllBytes(_saveTo, arrBytes);
                return true;                  
            }
            catch (Exception e)
            {
                Console.WriteLine("An error occurred: " + e.Message);
                return false;
            }
        }
        else
        {
            // The file doesn't have any content stored on Drive.
            return false;
        }
    }

从我的Google drive api C# download教程中删除了代码。我没有更新的年龄，所以如果有任何问题让我知道，我会解决它们。

Google Drive V3 Api获取文件名，C＃

3 个答案: