将文件上传添加到asp web api中的方法

[HttpPost]
public IHttpActionResult UploadFile()
{
    if (!Request.Content.IsMimeMultipartContent())
    {
        throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);
    }

    var provider = new MultipartFormDataStreamProvider("your_upload_directory");

    var task = Request.Content.ReadAsMultipartAsync(provider).ContinueWith(t =>
    {
        if (t.IsFaulted || t.IsCanceled)
        {
            throw new HttpResponseException(HttpStatusCode.InternalServerError);
        }

        // 处理上传的文件
        foreach (var file in provider.FileData)
        {
            var fileInfo = new FileInfo(file.LocalFileName);
            // 可以在这里进行文件的处理操作，如保存到数据库、存储到云存储等
        }

        return Ok();
    });

    return ResponseMessage(new HttpResponseMessage(HttpStatusCode.OK)
    {
        Content = new StringContent("File uploaded successfully")
    });
}

config.Routes.MapHttpRoute(
    name: "UploadApi",
    routeTemplate: "api/{controller}/upload",
    defaults: new { action = "UploadFile" }
);