Beispiel #1
0
        static void UseImage(string url)
        {
            HttpWebRequest webReq    = (HttpWebRequest)WebRequest.Create(new Uri(url));
            Stream         memStream = new MemoryStream();

            webReq.Method = "POST";
            string boundary = "--------------" + DateTime.Now.Ticks.ToString("x");// 边界符

            webReq.ContentType = "multipart/form-data; boundary=" + boundary;
            byte[] enter = Encoding.ASCII.GetBytes("\r\n");  //换行
            memStream.Write(enter, 0, enter.Length);
            Dictionary <string, string> dic = new Dictionary <string, string>()
            {
                { "appid", OCRConfig.appid },
                { "bucket", OCRConfig.bucket }
            };
            //写入文本字段
            string inputPartHeaderFormat = "--" + boundary + "\r\n" + "Content-Disposition:form-data;name=\"{0}\";" + "\r\n\r\n{1}\r\n";

            foreach (var kv in dic)
            {
                string inputPartHeader      = string.Format(inputPartHeaderFormat, kv.Key, kv.Value);
                var    inputPartHeaderBytes = Encoding.ASCII.GetBytes(inputPartHeader);
                memStream.Write(inputPartHeaderBytes, 0, inputPartHeaderBytes.Length);
            }
            var fileStream = new FileStream("1.jpg", FileMode.Open, FileAccess.Read);
            // 写入文件
            string imagePartHeader = "--" + boundary + "\r\n" +
                                     "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\n" +
                                     "Content-Type: image/jpeg\r\n\r\n";
            var header      = string.Format(imagePartHeader, "image", "1.jpg");
            var headerbytes = Encoding.UTF8.GetBytes(header);

            memStream.Write(headerbytes, 0, headerbytes.Length);
            var buffer = new byte[1024];
            int bytesRead;

            while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
            {
                memStream.Write(buffer, 0, bytesRead);
            }
            // 最后的结束符
            byte[] endBoundary = Encoding.ASCII.GetBytes("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" + "\r\n" + boundary + "--\r\n");
            memStream.Write(endBoundary, 0, endBoundary.Length);
            webReq.ContentLength = memStream.Length;
            webReq.Headers.Add(HttpRequestHeader.Authorization, OCRApi.HmacSha1Sign());
            webReq.Host = OCRConfig.Host;
            var requestStream = webReq.GetRequestStream();

            memStream.Position = 0;
            memStream.CopyTo(requestStream);
            HttpWebResponse response = (HttpWebResponse)webReq.GetResponse();
            StreamReader    sr       = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
            var             ret      = sr.ReadToEnd();

            sr.Close();
            response.Close();
            requestStream.Close();
            memStream.Close();
        }
Beispiel #2
0
        /// <summary>
        /// 使用Url传递
        /// </summary>
        /// <param name="postUrl"></param>
        static void UseUrl(string postUrl)
        {
            HttpClient client = new HttpClient();

            client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
            client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", OCRApi.HmacSha1Sign());
            client.DefaultRequestHeaders.Host          = OCRConfig.Host;
            var task = client.PostAsJsonAsync(postUrl, new
            {
                appid  = OCRConfig.appid,
                bucket = OCRConfig.bucket,
                url    = "http://test-123456.image.myqcloud.com/test.jpg"
            });

            task.Wait();
            var responseTask = task.Result.Content.ReadAsStringAsync();

            responseTask.Wait();
            var result = responseTask.Result;
        }