Question

我正在将数据从移动设备发布到Web API。发布请求JSON包含图片，因此我已将base64string转换为Web API上的发布。我正在GZIP中转换JSON。以下是我用于将请求从移动设备发送到XAMARIN FORM PCL

中的Web API的代码

    var jsonPictures = JsonConvert.SerializeObject(dataOrderPictures);
    using (HttpClientHandler ClientHandler = new HttpClientHandler())
    using (HttpClient Client = new HttpClient(ClientHandler))
      {                             
        Client.DefaultRequestHeaders.AcceptEncoding.Add(new StringWithQualityHeaderValue("gzip"));
        var content = new StringContent(jsonPictures, Encoding.UTF8, "application/json");
        var result1 = await Client.PostAsync(uri, content);
        var enc = Encoding.UTF8;
        using (Stream responseStream = result1.Content.ReadAsStreamAsync().Result)
          {
           using (var decompressedStream = new GZipStream(responseStream, CompressionMode.Decompress))
          {
           using (var rd = new StreamReader(decompressedStream, enc))
             {
               pictureResult = rd.ReadToEnd();
             }
          }
     }

下面是Web API代码：

    [HttpPost]
    [CompressFilter]
    public HttpResponseMessage SavePictures1(int driverid, string pswd, JObject jsonResult)
    {
     var rawMessage = Request.Content.ReadAsByteArrayAsync();
    }

CompressFilter类：

public class CompressFilter : ActionFilterAttribute
    {

        public override void OnActionExecuted(HttpActionExecutedContext actContext)
        {
            var content = actContext.Response.Content;

            var bytes = content == null ? null : content.ReadAsByteArrayAsync().Result;
            var zlibbedContent = bytes == null ? new byte[0] :
            CompressionHelper.DeflateByte(bytes);
            actContext.Response.Content = new ByteArrayContent(zlibbedContent);
            actContext.Response.Content.Headers.Remove("Content-Type");
            actContext.Response.Content.Headers.Add("Content-encoding", "deflate");
            actContext.Response.Content.Headers.Add("Content-Type", "application/json");
            base.OnActionExecuted(actContext);
        }
    }



     public class CompressionHelper
        {
            public static byte[] DeflateByte(byte[] str)
            {
                if (str == null)
                { return null; }

                ErrorLog.WriteAPIRequest("", "Driver", Convert.ToString(str.Length), "SavePictures", "Test");


                using (var output = new MemoryStream())
                {
                    using (var compressor = new Ionic.Zlib.GZipStream( output, Ionic.Zlib.CompressionMode.Compress,Ionic.Zlib.CompressionLevel.BestSpeed))
                    {
                        compressor.Write(str, 0, str.Length);
                    }
                    return output.ToArray();
                }

            }
        }

我想检查我从手机发送的请求内容长度。如何在上面的Web Api代码中获取内容长度。所以我可以检查GZip是否正常工作，以及实际JSON和GZIP有什么区别。希望有人可以帮助得到这个。

如何在Web API中检查原始请求内容的大小

0 个答案: