旷视Face++的Api学习 – 源码集中营

1、http处理类

public static class HttpHelper4MultipartForm { public class FileParameter //文件类，之后会用于判断传输的是图片路径，还是图片base64编码，还是二进制格式 { public byte[] File { get; set; } public string FileName { get; set; } public string ContentType { get; set; } public FileParameter(byte[] file) : this(file, null) { } public FileParameter(byte[] file, string filename) : this(file, filename, null) { } public FileParameter(byte[] file, string filename, string contenttype) { this.File = file; this.FileName = filename; this.ContentType = contenttype; } } private static readonly Encoding encoding = Encoding.UTF8;//确定传输编码 /// <summary> /// MultipartForm请求 /// </summary> /// <param name="postUrl">服务地址</param> /// <param name="userAgent"></param> /// <param name="postParameters">参数</param> /// <returns></returns> public static HttpWebResponse MultipartFormDataPost(string postUrl, string userAgent, Dictionary<string, object> postParameters) { string text = string.Format("----------{0:N}", Guid.NewGuid());//全局标识码，将会得到----------加上以分号分隔的全局标识码，如----------250,000为啥有这么多-，我也不知道 string contentType = "multipart/form-data; boundary=" + text;//multipart类型 byte[] multipartFormData = HttpHelper4MultipartForm.GetMultipartFormData(postParameters, text); return HttpHelper4MultipartForm.PostForm(postUrl, userAgent, contentType, multipartFormData); } private static HttpWebResponse PostForm(string postUrl, string userAgent, string contentType, byte[] formData) { HttpWebRequest httpWebRequest = WebRequest.Create(postUrl) as HttpWebRequest; if (httpWebRequest == null) { throw new NullReferenceException("request is not a http request"); } httpWebRequest.Method = "POST";//post方式 httpWebRequest.SendChunked = false; httpWebRequest.KeepAlive = true; httpWebRequest.Proxy = null; httpWebRequest.Timeout = Timeout.Infinite; httpWebRequest.ReadWriteTimeout = Timeout.Infinite; httpWebRequest.AllowWriteStreamBuffering = false; httpWebRequest.ProtocolVersion = HttpVersion.Version11; httpWebRequest.ContentType = contentType; httpWebRequest.CookieContainer = new CookieContainer(); httpWebRequest.ContentLength = (long)formData.Length; try { using (Stream requestStream = httpWebRequest.GetRequestStream()) { int bufferSize = 4096; int position = 0; while (position < formData.Length) { bufferSize = Math.Min(bufferSize, formData.Length - position); byte[] data = new byte[bufferSize]; Array.Copy(formData, position, data, 0, bufferSize); requestStream.Write(data, 0, data.Length); position += data.Length; } requestStream.Close(); } } catch (Exception ex) { return null; } HttpWebResponse result; try { result = (httpWebRequest.GetResponse() as HttpWebResponse); } catch (WebException arg_9C_0) { result = (arg_9C_0.Response as HttpWebResponse); } return result; } public static byte[] getBytePicture(string path) { Bitmap bmp = new Bitmap(path); // 图片地址 byte[] fileImage; using (Stream stream1 = new MemoryStream()) { bmp.Save(stream1, ImageFormat.Jpeg); byte[] arr = new byte[stream1.Length]; stream1.Position = 0; stream1.Read(arr, 0, (int)stream1.Length); stream1.Close(); fileImage = arr; } return fileImage; } public static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)//检查验证结果，额，，，，我觉得这里应该有其它东西要写的 { return true; } /// <summary> /// 从表单中获取数据 /// </summary> /// <param name="postParameters"></param> /// <param name="boundary"></param> /// <returns></returns> private static byte[] GetMultipartFormData(Dictionary<string, object> postParameters, string boundary) { Stream stream = new MemoryStream(); bool flag = false; foreach (KeyValuePair<string, object> current in postParameters) { if (flag) { stream.Write(HttpHelper4MultipartForm.encoding.GetBytes("\r\n"), 0, HttpHelper4MultipartForm.encoding.GetByteCount("\r\n")); } flag = true; if (current.Value is HttpHelper4MultipartForm.FileParameter) { HttpHelper4MultipartForm.FileParameter fileParameter = (HttpHelper4MultipartForm.FileParameter)current.Value; string s = string.Format("--{0}\r\nContent-Disposition: form-data; name=\"{1}\"; filename=\"{2}\"\r\nContent-Type: {3}\r\n\r\n", new object[] { boundary, current.Key, fileParameter.FileName ?? current.Key, fileParameter.ContentType ?? "application/octet-stream" }); stream.Write(HttpHelper4MultipartForm.encoding.GetBytes(s), 0, HttpHelper4MultipartForm.encoding.GetByteCount(s)); stream.Write(fileParameter.File, 0, fileParameter.File.Length); } else { string s2 = string.Format("--{0}\r\nContent-Disposition: form-data; name=\"{1}\"\r\n\r\n{2}", boundary, current.Key, current.Value);// stream.Write(HttpHelper4MultipartForm.encoding.GetBytes(s2), 0, HttpHelper4MultipartForm.encoding.GetByteCount(s2)); } } string s3 = "\r\n--" + boundary + "--\r\n"; stream.Write(HttpHelper4MultipartForm.encoding.GetBytes(s3), 0, HttpHelper4MultipartForm.encoding.GetByteCount(s3)); stream.Position = 0L; byte[] array = new byte[stream.Length]; stream.Read(array, 0, array.Length); stream.Close(); return array; } } public static class HttpHelper4Multipart