Question

我正在尝试使用访问令牌将压缩文件上传到Dropbox。以下代码适用于解压缩文件：

private static async Task FileUploadToDropbox(string filePath, string fileName, byte[] fileContent)
{
    var client = new DropboxClient("Access Token");

    const int chunkSize = 1024;

    using (var stream = new MemoryStream(fileContent))
    {
        int numChunks = (int)Math.Ceiling((double)stream.Length / chunkSize);

        byte[] buffer = new byte[chunkSize];
        string sessionId = null;

        for (var idx = 0; idx < numChunks; idx++)
        {
            var byteRead = stream.Read(buffer, 0, chunkSize);

            using (MemoryStream memStream = new MemoryStream(buffer, 0, byteRead))
            {
                if (idx == 0)
                {
                    var result = await client.Files.UploadSessionStartAsync(body: memStream);
                    sessionId = result.SessionId;
                }

                else
                {
                    UploadSessionCursor cursor = new UploadSessionCursor(sessionId, (ulong)(chunkSize * idx));

                    if (idx == numChunks - 1)
                    {
                        await client.Files.UploadSessionFinishAsync(cursor, new CommitInfo(filePath + "/" + fileName), memStream);
                    }

                    else
                    {
                        await client.Files.UploadSessionAppendV2Async(cursor, body: memStream);
                    }
                }
            }
        }
    }
}

但是当我尝试使用此代码上传压缩文件时，它会将一个空的压缩文件上传到Dropbox。我正在将压缩文件作为字节数组读取并将其传递给上述方法。虽然文件大小保持不变，但是当我下载文件并尝试将其解压缩时，它表示压缩文件为空。

Answer 1

请试试这个：

    /// <summary>
    /// Function to import local file to dropbox.
    /// </summary>
    public static async Task<bool> WriteFileToDropBox()
    {
        try
        {
            //Connecting with dropbox.
            var file = "File path at dropbox";
            using (var dbx = new DropboxClient("Access Token"))
            using (var fs = new FileStream("Path of file to be uploaded.")
            {
                var updated = await dbx.Files.UploadAsync(file, WriteMode.Add.Instance, body: fs);
            }
            return true;
        }
        catch (Exception err)
        {
            MessageBox.Show(err.Message);
            return false;
        }
    }

Answer 2

private static async Task FileUploadToDropbox(string filePath, string fileName, string fileSource)
        {
            using (var dbx = new DropboxClient("access Token"))
            using (var fs = new FileStream(fileSource, FileMode.Open, FileAccess.Read))
            {
                var updated = await dbx.Files.UploadAsync(
                    (filePath + "/" + fileName), WriteMode.Overwrite.Instance, body: fs);
            }
        }

以上方法对我有用。

使用C＃将压缩文件上传到Dropbox

2 个答案: