Uwp 将字节数组文件写入OneDrive

好的，我已经找到了如何从OneDrive for Business中获取文件并使用以下代码将其写入计算机上的本地目录：

    public static async Task GetFileAsync()
    {
        var (authResult, message) = await Authentication.AquireTokenAsync();
        var httpClient = new HttpClient();
        HttpResponseMessage response;
        var request = new HttpRequestMessage(HttpMethod.Get, MainPage.fileurl);
        request.Headers.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", authResult.AccessToken);
        response = await httpClient.SendAsync(request);
        byte[] fileBytes = await response.Content.ReadAsByteArrayAsync();
        StorageLibrary videoLibrary = await StorageLibrary.GetLibraryAsync(KnownLibraryId.Videos);
        string saveFolder = videoLibrary.SaveFolder.Path;
        string genName = App.Generator;
        genName = genName.Replace(" ", "-");
        string saveFileName = App.Date + "-" + App.StartTime + "-" + App.IBX + "-" + genName + ".xlsx";
        saveLocation = saveFolder + "\\" + saveFileName;

        using (MemoryStream stream = new MemoryStream())
        {
            stream.Write(fileBytes, 0, (int)fileBytes.Length);
            using (spreadsheetDoc = SpreadsheetDocument.Open(stream, true))
            {
                await Task.Run(() =>
                {
                    File.WriteAllBytes(saveLocation, stream.ToArray());
                    return TaskStatus.RanToCompletion;
                });
            }
        }
    }

一旦我将文件保存在本地计算机上，我就能够成功地编辑文件并保存编辑

我了解了如何将其放入字节数组，以及如何在创建数组后删除本地文件夹中已编辑的文件。现在，我想将这个新编辑的文件（字节数组）写回OneDrive子文件夹

我目前掌握的守则如下：

    public static async Task PutFileAsync()
    {
        string genName = App.Generator;
        genName = genName.Replace(" ", "-");
        StorageLibrary videoLibrary = await StorageLibrary.GetLibraryAsync(KnownLibraryId.Videos);
        string readFolder = videoLibrary.SaveFolder.Path;
        StorageFolder videoFolder = await StorageFolder.GetFolderFromPathAsync(readFolder);
        string readFileName = App.Date + "-" + App.StartTime + "-" + App.IBX + "-" + genName + ".xlsx";
        StorageFile readFile = await videoFolder.GetFileAsync(readFileName);            

进行了一些更改：

---

最后一部分也与相关。

您需要将json字符串/纯文本作为请求体传递，而不是二进制数组（在您的情况下，只需读取本地文件的实际内容并将内容传递给json）

如果更新文件内容，则可以使用

另一种方法：先在驱动器中保存旧文件，然后保存最新文件

根据您的代码在MVC上添加一些工作代码（关键点：request.Content=new ByteArrayContent）：

---

您需要将json字符串/纯文本作为请求体传递，而不是二进制数组（在您的例子中，只需读取本地文件的实际内容并将内容传递给json）

如果更新文件内容，则可以使用

另一种方法：先在驱动器中保存旧文件，然后保存最新文件

根据您的代码在MVC上添加一些工作代码（关键点：request.Content=new ByteArrayContent）：

---

今天早上我自己也在讨论阵列部分，所以我现在有一个“文件”到OneDrive。但是，到达那里的文件有526个字节，并且已损坏。硬盘上的文件大小为38KB，工作正常。我确信这一定与序列化文件有关。今天早上我自己也在讨论数组部分。所以我现在有一个“文件”要到OneDrive。但是，到达那里的文件有526个字节，并且已损坏。硬盘上的文件大小为38KB，工作正常。我确信这一定与序列化文件有关。第一期…使用正确的url。第一期…使用正确的url。

        var (authResult, message) = await Authentication.AquireTokenAsync();
        var httpClient = new HttpClient();
        HttpResponseMessage response;
        string posturl = MainPage.spfileurl + readFile.Name + ":/content";
        var content = JsonConvert.SerializeObject(readFile);
        var request = new HttpRequestMessage(HttpMethod.Put, posturl);
        request.Headers.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", authResult.AccessToken);
        request.Content = new StringContent(content, Encoding.UTF8, "application/json");
        response = await httpClient.SendAsync(request);
        var responseString = await response.Content.ReadAsStringAsync();
        await Task.Run(() =>
        {
            File.Delete(readFile.Path);
            return TaskStatus.RanToCompletion;
        });

 // Initialize the GraphServiceClient.
            GraphServiceClient graphClient = SDKHelper.GetAuthenticatedClient();

            var httpClient = new HttpClient();
            HttpResponseMessage response;
            //string posturl = MainPage.spfileurl + readFile.Name + ":/content";
            string posturl = "https://graph.microsoft.com/v1.0/me/drive/root:/Test.docx:/content";
            //System.IO.FileStream file = System.IO.File.Open(@"D:\TestDocs\Allin.docx", FileMode.Open);             
            //string text= System.IO.File.ReadAllText(@"D:\TestDocs\Allin.docx",Encoding.Unicode);
            //var content = JsonConvert.SerializeObject(file);
            var request1 = new HttpRequestMessage(HttpMethod.Put, posturl);
            string accessToken = await SampleAuthProvider.Instance.GetUserAccessTokenAsync();
            request1.Headers.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", accessToken);
            //request1.Content = new StringContent(content, Encoding.UTF8, "application/json");
            request1.Content = new ByteArrayContent(System.IO.File.ReadAllBytes(@"D:\TestDocs\Allin.docx"));//  StringContent(text, Encoding.UTF8); 
            response = await httpClient.SendAsync(request1);
            var responseString = await response.Content.ReadAsStringAsync();
            await Task.Run(() =>
            {
                // System.IO.File.Delete(readFile.Path);
                return TaskStatus.RanToCompletion;
            });