C# 印刷文字识别-营业执照

private const String host = "https://dm-58.data.aliyun.com";
        private const String path = "/rest/160601/ocr/ocr_business_license.json";
        private const String method = "POST";
        private const String appcode = "本身的AppCode";  
        public static void Main(string[] args)
        {
            String querys = "";
            String img_file = "图片路径";       
            FileStream fs = new FileStream(img_file, FileMode.Open);
            BinaryReader br = new BinaryReader(fs);
            byte[] contentBytes = br.ReadBytes(Convert.ToInt32(fs.Length));
            String base64 = System.Convert.ToBase64String(contentBytes);
            String bodys = "{\"image\":\"" + base64 + "\"";  //对图片内容进行Base64编码


            String url = host + path;
            HttpWebRequest httpRequest = null;
            HttpWebResponse httpResponse = null;

            if (0 < querys.Length)
            {
                url = url + "?" + querys;
            }

            if (host.Contains("https://"))
            {
                ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
                httpRequest = (HttpWebRequest)WebRequest.CreateDefault(new Uri(url));
            }
            else
            {
                httpRequest = (HttpWebRequest)WebRequest.Create(url);
            }
            httpRequest.Method = method;
            httpRequest.Headers.Add("Authorization", "APPCODE " + appcode);
            //根据API的要求，定义相对应的Content-Type
            httpRequest.ContentType = "application/json; charset=UTF-8";
            // 设置并解析  格式
            String config = "{\\\"side\\\":\\\"face\\\"}";
            bodys = "{\"image\":\"" + base64 + "\"";
            if (config.Length > 0)
            {
                bodys += ",\"configure\" :\"" + config + "\"";
            }
            bodys += "}";


            if (0 < bodys.Length)
            {
                byte[] data = Encoding.UTF8.GetBytes(bodys);
                using (Stream stream = httpRequest.GetRequestStream())
                {
                    stream.Write(data, 0, data.Length);
                }
            }
            try
            {
                httpResponse = (HttpWebResponse)httpRequest.GetResponse();
            }
            catch (WebException ex)
            {
                httpResponse = (HttpWebResponse)ex.Response;
            }

            Console.WriteLine(httpResponse.StatusCode);
            Console.WriteLine(httpResponse.Method);
            Console.WriteLine(httpResponse.Headers);
            Stream st = httpResponse.GetResponseStream();
            StreamReader reader = new StreamReader(st, Encoding.GetEncoding("utf-8"));
            Console.WriteLine(reader.ReadToEnd());
            Console.WriteLine("\n");
            Console.ReadLine();

        }
        public static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
        {
            return true;
        }