使用 C# .NET HTTPClient 在 Node JS 服务器上通过 Multer 将 Revit 文件上传到 Autodesk Forge OSS

Question

我有一个 node.js 服务器使用 autodesk forge Forge Node.js SDK. For uploading an object I have used uploadObject() method and multer middleware like what has been said here。代码是这样的：

router.post(
    '/objects',
    multer({ dest: 'uploads/' }).single('fileToUpload'),
    XAuth,
    async (req, res, next) => {
        fs.readFile(req.file.path, async (err, data) => {
            if (err) {
                next(err);
            }
            try {
                req.setTimeout(0);

                await new ObjectsApi().uploadObject(
                    req.body.bucketKey,
                    req.file.originalname,
                    data.length,
                    data,
                    {},
                    req.oauth_client,
                    req.oauth_token
                );
                res.status(200).end();
            } catch (err) {
                next(err);
            }
        });
    }
);

就像在 here 中所说的那样，我可以通过 Ajax 将其称为 api（我使用了input html 元素获取文件):

var file = input.files[0];
var formData = new FormData();
formData.append('fileToUpload', file);
formData.append('bucketKey', bucketKey.toLowerCase());

$.ajax({
    url: '/api/forge/oss/objects',
    headers: {
       'x-auth': token,
    },
    type: 'POST',
    data: formData,
    processData: false,
    contentType: false,
    success: function (data) {
        console.log('success: Object has been uploaded');
    },
    error: function (err) {
        console.log(err);
    },
});

我要通过创建用于上传 Revit 模型的 C# Revit 插件来执行相同的过程。我的意思是我如何在 C# 中拥有类似于 FormData() 的对象。我已经通过 HttpClient 和 MultipartFormDataContent:

尝试了以下代码

using (MultipartFormDataContent httpContent = new MultipartFormDataContent())
{
    Stream file = new FileStream(App.Path, FileMode.Open);
    httpContent.Add(new StringContent(bucketKey.ToLower()), "bucketKey");
    httpContent.Add(new StreamContent(file), "fileToUpload");

    using (var httpClient = new HttpClient { BaseAddress = App.Uri })
    {
        httpClient.DefaultRequestHeaders.Add("x-auth", App.Token);

        using (var httpResponse = await httpClient.PostAsync("/api/forge/oss/objects", httpContent))
        {
            if (httpResponse.IsSuccessStatusCode)
            {
                TaskDialog.Show("Upload", "success: Object has been uploaded"); 
            }
        }
    }
}

但我的服务器出现 MulterError: Field value too long 错误，我的 Revit 插件收到 500: 'Internal Server Error 响应。

Answer 1

感谢 Xiaodong Liang，我像下面这样编辑了我的代码，它对我有用。

using (MultipartFormDataContent httpContent = new MultipartFormDataContent())
{
    byte[] byteArray = File.ReadAllBytes(App.Path);
    Stream stream = new MemoryStream(byteArray);

    StreamContent streamContent = new StreamContent(stream);
    streamContent.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");

    httpContent.Add(streamContent, "fileToUpload");
    httpContent.Add(new StringContent(bucketKey.ToLower()), "bucketKey");

    using (var httpClient = new HttpClient { BaseAddress = App.Uri })
    {
        httpClient.DefaultRequestHeaders.Add("x-auth", App.Token);

        using (var httpResponse = await httpClient.PostAsync("/api/forge/oss/objects", httpContent))
        {
            if (httpResponse.IsSuccessStatusCode)
            {
                TaskDialog.Show("Upload", "success: Object has been uploaded"); 
            }
        }
    }
}

使用 C# .NET HTTPClient 在 Node JS 服务器上通过 Multer 将 Revit 文件上传到 Autodesk Forge OSS

Uploading a Revit file to Autodesk Forge OSS by Multer on a Node JS server with C# .NET HTTPClient

c#

node.js

dotnet-httpclient

multer

autodesk-forge