尝试将文件上传到 C# 中的 Zendesk Api 2 时出错

Question

我正在尝试使用 Zendesk API v2 上传图像，我正在使用 RestSharp 将文件发布到 /api/v2/uploads.json，并且一旦我使用，该文件就会出现在票证中创建票证并添加附件，问题是如果我上传图片，它不会在票证上打开，它已损坏，如果它是一个 .txt 文件，它有额外的数据，这是我的方法：

var client = new RestSharp.RestClient(model.RequestUri);
client.Authenticator = new HttpBasicAuthenticator(string.Format("{0}/token", model.Username), model.Password);

var request = new RestRequest("/api/v2/uploads.json", Method.POST);
request.AddHeader("Accept", "application/json");
request.AddHeader("Content-Type", "text/plain");
request.AlwaysMultipartFormData = true;
request.Parameters.Clear();

request.RequestFormat = RestSharp.DataFormat.Json;
//request.AddBody(createUpload);
byte[] bytes = System.IO.File.ReadAllBytes(HttpContext.Current.Server.MapPath("~/Media/uploads/test.txt"));
request.AddFileBytes("Attachment", bytes, "test.txt", contentType: "text/plain");
request.AddParameter("filename", "test.txt");

IRestResponse response = client.Execute(request);
var content = JObject.Parse(response.Content);
return content["upload"]["token"].ToString();

这是附在票证上的生成的 txt 文件：

-------------------------------28947758029299
Content-Disposition: form-data; name="filename"

test.txt
-------------------------------28947758029299
Content-Disposition: form-data; name="Attachment"; filename="test.txt"
Content-Type: application/octet-stream

testing txt
-------------------------------28947758029299--

原始文件只有：

testing txt

知道错误可能是什么吗？

谢谢。

Answer 1

我已经成功地使用与此类似的代码片段将图像和 PDF 上传到 Zendesk：

var client = new RestClient(apiUrl);
client.Authenticator = new HttpBasicAuthenticator(username + "/token", token);
client.AddDefaultHeader("Accept", "application/json");

string name = "name";
byte[] data; //Read all bytes of file
string filename = "filename.jpg";

var request = new RestRequest("/uploads.json", Method.POST);
request.AddFile(name, data, filename, "application/binary");
request.AddQueryParameter("filename", filename);
var response = client.Execute(request);

Answer 2

我使用 Zendesk 文档中推荐的名为 ZendeskApi 的外部库解决了这个问题：https://github.com/justeat/ZendeskApiClient

通过使用这个库，我能够成功上传附件，它也适用于任何类型的文件。它也很容易使用，我的方法现在是这样的：

IZendeskClient client = new ZendeskClient(
    new Uri(model.RequestUri),
    new ZendeskDefaultConfiguration(model.Username,
            model.Password)
);

UploadRequest request = new UploadRequest() {
    Item = model.Attachment.ConvertToZendeskFile()
};

IResponse<Upload> response = client.Upload.Post(request);
return response.Item.Token;

这是 ConvertToZendeskFile 方法：

private static ZendeskFile ConvertToZendeskFile(this HttpPostedFileBase rawFile)
{
    return new ZendeskFile()
    {
        FileName = rawFile.FileName,
        ContentType = rawFile.ContentType,
        InputStream = rawFile.InputStream
    };
}

最后一步是创建一个 class 从 API:

实现 IHttpPostedFile

public class ZendeskFile : IHttpPostedFile
{
    public string ContentType { get; set; }
    public string FileName { get; set; }
    public Stream InputStream { get; set; }
}

这解决了我的问题，我希望它能帮助遇到同样问题的人。

Answer 3

需要添加 header ContentType=application/binary 并在 URI 中提供文件名 ?filename=myfile.dat:

HttpClient client = [...];
var content = new ByteArrayContent(fileByteArray);
content.Headers.ContentType = new MediaTypeHeaderValue("application/binary");
HttpResponseMessage response = await client.PostAsync(url, content);
string responseString = await response.Content.ReadAsStringAsync();

来自 Zendesk 文档：

curl "https://{subdomain}.zendesk.com/api/v2/uploads.json?filename=myfile.dat&token={optional_token}" \
-v -u {email_address}:{password} \
-H "Content-Type: application/binary" \
--data-binary @file.dat -X POST

Answer 4

我遇到了同样的问题，Restsharp 将文件作为多部分发送，唯一对我有用的解决方案是将文件作为参数发送，内容为 "application/binary"。

public string UploadFile(ZendeskFile file)
{
    try
    {
        var request = new RestRequest(FileUploadsPath, Method.POST);
        request.AddQueryParameter("filename", file.Name);
        request.AddParameter("application/binary", file.Data, ParameterType.RequestBody);
        var response = Execute<UploadZendeskFileResponse>(request);
        var result = JsonConvert.DeserializeObject<UploadZendeskFileResponse>(response.Content);
        return result.upload.token;
    }
    catch (Exception ex)
    {
        throw ex;
    }

}

我希望这对其他人有帮助。

Answer 5

就我而言，我做了这样的事情。希望你不要像我一样浪费6个小时！

public async Task UploadImageToZendesk(IFormFile image)
    {
        byte[] fileByteArray;
        var request = new HttpRequestMessage();
        var client = new HttpClient();

        await using (var fileStream = image.OpenReadStream())
        await using (var memoryStream = new MemoryStream())
        {
            await fileStream.CopyToAsync(memoryStream);
            fileByteArray = memoryStream.ToArray();
        }

        ByteArrayContent byteContent = new ByteArrayContent(fileByteArray);
        request.Content = byteContent;
        request.Content.Headers.ContentType = MediaTypeHeaderValue.Parse($"application/binary");

        await client.SendAsync(request);
    }

尝试将文件上传到 C# 中的 Zendesk Api 2 时出错

Error while trying to upload files to Zendesk Api 2 in c#

c#

asp.net-mvc

c#-4.0

restsharp

zendesk-api