發短訊API
- 2019 年 10 月 11 日
- 筆記
由於需要進行短訊發送，選擇了百度的API，現貢獻一下源碼。
/// <summary> /// 百度接口簽名幫助類 /// </summary> public class BaiduApiHelper { #region 構造函數 /// <summary> /// 構造函數 /// </summary> /// <param name="accessKeyId">百度AccessKeyId(AK)</param> /// <param name="secretAccessKey">百度SecretAccessKey(SK)</param> public BaiduApiHelper(string accessKeyId, string secretAccessKey) { _accessKeyId = accessKeyId; _secretAccessKey = secretAccessKey; } #endregion #region 內部成員 private string _accessKeyId { get; } private string _secretAccessKey { get; } private string UriEncode(string input, bool encodeSlash = false) { StringBuilder builder = new StringBuilder(); foreach (byte b in Encoding.UTF8.GetBytes(input)) { if ((b >= 'a' && b <= 'z') || (b >= 'A' && b <= 'Z') || (b >= '0' && b <= '9') || b == '_' || b == '-' || b == '~' || b == '.') { builder.Append((char)b); } else if (b == '/') { if (encodeSlash) { builder.Append("%2F"); } else { builder.Append((char)b); } } else { builder.Append('%').Append(b.ToString("X2")); } } return builder.ToString(); } private string Hex(byte[] data) { var sb = new StringBuilder(); foreach (var b in data) { sb.Append(b.ToString("x2")); } return sb.ToString(); } private string CanonicalRequest(HttpWebRequest req) { Uri uri = req.RequestUri; StringBuilder canonicalReq = new StringBuilder(); canonicalReq.Append(req.Method).Append("n").Append(UriEncode(Uri.UnescapeDataString(uri.AbsolutePath))).Append("n"); var parameters = HttpUtility.ParseQueryString(uri.Query); List<string> parameterStrings = new List<string>(); foreach (KeyValuePair<string, string> entry in parameters) { parameterStrings.Add(UriEncode(entry.Key) + '=' + UriEncode(entry.Value)); } parameterStrings.Sort(); canonicalReq.Append(string.Join("&", parameterStrings.ToArray())).Append("n"); string host = uri.Host; if (!(uri.Scheme == "https" && uri.Port == 443) && !(uri.Scheme == "http" && uri.Port == 80)) { host += ":" + uri.Port; } canonicalReq.Append("host:" + UriEncode(host)); return canonicalReq.ToString(); } #endregion #region 外部接口 /// <summary> /// 發送POST請求 /// </summary> /// <param name="method">請求方法，需要大寫，列如(POST)</param> /// <param name="host">主機地址列如(http://sms.bj.baidubce.com)</param> /// <param name="url">接口地址列如(/bce/v2/message)</param> /// <param name="paramters">參數列表</param> /// <returns></returns> public string RequestData(string method, string host, string url, Dictionary<string, object> paramters = null) { string ak = _accessKeyId; string sk = _secretAccessKey; DateTime now = DateTime.Now; int expirationInSeconds = 1200; HttpWebRequest req = WebRequest.Create(host + url) as HttpWebRequest; Uri uri = req.RequestUri; req.Method = method; req.ContentType = "application/json"; if (paramters != null) { Stream requestStream = req.GetRequestStream(); byte[] data = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(paramters)); requestStream.Write(data, 0, data.Length); } string signDate = now.ToUniversalTime().ToString("yyyy'-'MM'-'dd'T'HH':'mm':'ssK"); string authString = "bce-auth-v1/" + ak + "/" + signDate + "/" + expirationInSeconds; string signingKey = Hex(new HMACSHA256(Encoding.UTF8.GetBytes(sk)).ComputeHash(Encoding.UTF8.GetBytes(authString))); string canonicalRequestString = CanonicalRequest(req); string signature = Hex(new HMACSHA256(Encoding.UTF8.GetBytes(signingKey)).ComputeHash(Encoding.UTF8.GetBytes(canonicalRequestString))); string authorization = authString + "/host/" + signature; req.Headers.Add("x-bce-date", signDate); req.Headers.Add(HttpRequestHeader.Authorization, authorization); HttpWebResponse res; string message = ""; try { res = req.GetResponse() as HttpWebResponse; } catch (WebException e) { res = e.Response as HttpWebResponse; } message = new StreamReader(res.GetResponseStream()).ReadToEnd(); return message; } /// <summary> /// 發送短訊 /// </summary> /// <param name="phoneNum">手機號碼</param> /// <param name="code">驗證碼</param> /// <returns></returns> public static bool SendMsg(string phoneNum, string code) { try { BaiduApiHelper baiduApiHelper = new BaiduApiHelper("8888", "8888"); string host = "http://sms.bj.baidubce.com"; string url = "/bce/v2/message"; Dictionary<string, object> paramters = new Dictionary<string, object>(); paramters.Add("invokeId", "Vhn0B-vCXn-8888"); paramters.Add("phoneNumber", phoneNum); paramters.Add("templateCode", "smsTpl:e747612888e9018888"); paramters.Add("contentVar", new { code = code }); string resJsonStr = baiduApiHelper.RequestData("POST", host, url, paramters); var resJson = JsonConvert.DeserializeObject<JObject>(resJsonStr); return resJson["code"]?.ToString() == "1000"; } catch { return false; } } #endregion }
