方法一，根據RestClient，輕量級元件，在GitHub的地址

  public object PsotBaiDuAPIIdentify()
        {
            var client = new RestClient("http://plantgw.nongbangzhu.cn/plant/recognize2");
            var request = new RestRequest(Method.POST);
            request.AddHeader("postman-token", "ae788751-d4f8-8a70-4073-865affb1c509");
            request.AddHeader("cache-control", "no-cache");
            request.AddHeader("authorization", "APPCODE 你的code");//appcode和code之間有個空格
            request.AddHeader("content-type", "application/x-www-form-urlencoded");
            request.AddParameter("application/x-www-form-urlencoded", "img_base64=圖片轉為string", ParameterType.RequestBody);
            var response = client.Execute(request);
            return base.Json(new { status = 1, success = true, msg = "", list = response });
        }
 

方法二，根據WebRequest 來實現

 private const String host = "http://plantgw.nongbangzhu.cn";
        private const String path = "/plant/recognize2";
        private const String method = "POST";
        private const String appcode = "你的code碼";
        public object PsotaliAPIIdentify2()
        {
            var bodys = "img_base64=";//img_base64
            var url = host + path;
            HttpPostedFileBase files = Request.Files[0] ?? null;
            if (files == null || files.ContentLength <= 0 || Request.Files.Count != 1)
                return base.Json(new { status = -2, success = false, msg = "引數錯誤，請核實", list = "" });
            try
            {
                var request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(url);
                request.Method = method;
                request.Accept = "application/json;";
                request.Headers.Add("cache-control", "no-cache");
                //獲取許可權code
                request.Headers.Add("authorization", "APPCODE " + appcode);
                request.ContentType = "application/x-www-form-urlencoded";

                //轉換img為string
                byte[] buffer = StreamToBytes(files.InputStream);
                string imgstr = Convert.ToBase64String(buffer);
                var base64Img = System.Web.HttpUtility.UrlEncode(imgstr);

                //上傳
                byte[] data = Encoding.UTF8.GetBytes(bodys + base64Img);
                request.ContentLength = data.Length;
                request.GetRequestStream().Write(data, 0, data.Length);

                //獲取返回值
                var response = (System.Net.HttpWebResponse)request.GetResponse();
                StreamReader reader = new StreamReader(response.GetResponseStream());
                //獲取返回值
                var reastr = reader.ReadToEnd();
                Log.Debug(reastr);
                    return base.Json(new { status = 1, success = true, msg = "", list = reastr });
            }
            catch (Exception err)
            {
                Log.Debug(err.Message);
                return base.Json(new { status = -1, success = false, msg = err.Message, list = "" });
            }
        }
 

返回結果：

{
    "Status": 0,
    "Message": "OK",
    "Result": [
        {
            "Score": "99.74",
            "AliasList": [],
            "Genus": "麒麟尾屬",
            "InfoCode": "5yj9UbZgitGE9MhO",
            "AliasName": "",
            "Family": "天南星科",
            "ImageUrl": "https://static.nongbangzhu.cn/samples_v4/p11k/p11k-watermark/%E7%BB%BF%E8%90%9D/1199806cbf1d6f78.jpg",
            "LatinName": "Epipremnum aureum",
            "Name": "綠蘿"
        },
        {
            "Score": "0.05",
            "AliasList": [],
            "Genus": "廣東萬年青屬",
            "InfoCode": "CIWLogDlplSmcgvK",
            "AliasName": "",
            "Family": "天南星科",
            "ImageUrl": "https://static.nongbangzhu.cn/samples_v4/p11k/p11k-watermark/%E5%B9%BF%E4%B8%9C%E4%B8%87%E5%B9%B4%E9%9D%92/1048b2b0c7f3793c.jpg",
            "LatinName": "Aglaonema modestum",
            "Name": "廣東萬年青"
        },
        {
            "Score": "0.05",
            "AliasList": [
                "烏楊",
                "茄冬樹",
                "紅桐"
            ],
            "Genus": "秋楓屬",
            "InfoCode": "xrKtFq7PdQZ6qYAZ",
            "AliasName": "烏楊、茄冬樹、紅桐",
            "Family": "葉下珠科",
            "ImageUrl": "https://static.nongbangzhu.cn/samples_v4/p11k/p11k-watermark/%E9%87%8D%E9%98%B3%E6%9C%A8/10029e17ff255515.jpg",
            "LatinName": "Bischofia polycarpa",
            "Name": "重陽木"
        },
        {
            "Score": "0.02",
            "AliasList": [
                "老虎芋",
                "大麻芋",
                "不拱"
            ],
            "Genus": "海芋屬",
            "InfoCode": "1sedktIatQiJcOwc",
            "AliasName": "老虎芋、大麻芋、不拱",
            "Family": "天南星科",
            "ImageUrl": "https://static.nongbangzhu.cn/samples_v4/p11k/p11k-watermark/%E5%B0%96%E5%B0%BE%E8%8A%8B/104cae5d2c6736e5.jpg",
            "LatinName": "Alocasia cucullata",
            "Name": "尖尾芋"
        },
        {
            "Score": "0.01",
            "AliasList": [
                "箭葉芋",
                "綠精靈",
                "白斑葉"
            ],
            "Genus": "合果芋屬",
            "InfoCode": "9WRpxCpa7JTzjamH",
            "AliasName": "箭葉芋、綠精靈、白斑葉",
            "Family": "天南星科",
            "ImageUrl": "https://static.nongbangzhu.cn/samples_v4/p11k/p11k-watermark/%E5%90%88%E6%9E%9C%E8%8A%8B/12587fe7732e8a8a.jpg",
            "LatinName": "Syngonium podophyllum",
            "Name": "合果芋"
        }
    ]
}