Amazon web services 如何将pdf文件上载到AWS网关Http Post到.NET核心端点

我想将pdf文件列表上载到AWS网关HTTP Post。AWS网关设置有问题，我无法将网关配置为接收媒体类型并将其绑定到C#class文件。这是我的.NET核心端点

 public class FileContainer
 {
     public IFormFile FilePayload { get; set; }

     public string Type { get; set; }
 }

 public class Request
 {
     public IList<FileContainer> Files{ get; set; }
 }
 
 [HttpPost]
 public async Task<IActionResult> Upload(Request request)
 {
     var files = request.Files.Select(x => x.FilePayload).ToList()
     //TODO: Do something with the files
 }

如果我在本地调用.NET核心端点而不通过AWS网关，那么它工作得非常好

Content-Type: multipart/form-data; boundary=--------------------------577290744247049779304216
Accept: */*
Content-Length: 161708