支持单条和批量发送短信
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Tech.CoreUtility;
using Tech.WebApi;using System.Collections;
using System.Globalization;
using System.IO;
using System.Net;
using System.Security.Cryptography;namespace Tech.TC.BLL
{/// <summary>/// 【相关文档】/// RPC调用机制：https://help.aliyun.com/document_detail/315526.htm?spm=a2c4g.11186623.0.0.46b027b5vlfd0X/// 发送短信文档： https://help.aliyun.com/document_detail/419273.htm?spm=a2c4g.11186623.0.0.34374198G2b44u/// 短信接口文档：https://help.aliyun.com/document_detail/419298.html?spm=5176.25163407.help.dexternal.774dbb6eylDOx0/// </summary>public static class AliyunSmsHelper{/// <summary>/// 阿里云访问密钥/// </summary>public static string AccessKeyId = WorkBench.WebConfig["AccessKeyID"]; //用户标识public static string AccessKeySecret = WorkBench.WebConfig["AccessKeySecret"]; //用户密钥public static string SignName = WorkBench.WebConfig["SignName"]; //private static readonly string Separator = "&";public static string Url = "http://dysmsapi.aliyuncs.com?"; //短信接口地址/// <summary>/// 发送短信/// </summary>/// <param name="phone">手机号码</param>/// <param name="signName">短信签名</param>/// <param name="templateCode">模板编号</param>/// <param name="templateParam">模板变量</param>/// <returns></returns>public static string SendSms(string phone, string signName, string templateCode, string templateParam){var dic = new Dictionary<string, string>();//公共请求参数dic.Add("Action", "SendSms");dic.Add("Version", "2017-05-25");dic.Add("Format", "JSON");dic.Add("AccessKeyId", AccessKeyId);dic.Add("SignatureNonce", Guid.NewGuid().ToString());dic.Add("Timestamp", DateTime.UtcNow.ToString("yyyy-MM-dd'T'HH:mm:ss'Z'"));dic.Add("SignatureMethod", "HMAC-SHA1");dic.Add("SignatureVersion", "1.0");//请求参数dic.Add("PhoneNumbers", phone);dic.Add("SignName", signName);dic.Add("TemplateCode", templateCode);dic.Add("TemplateParam", templateParam);//接口签名var signature = GetSignature(dic, "GET", AccessKeySecret);dic.Add("Signature", signature);var parms = "";foreach (var pair in dic) parms += pair.Key + "=" + PercentEncode(pair.Value) + "&"; //参数值需用阿里云约定编码方式进行编码parms = parms.TrimEnd('&');return HttpGet(Url + parms);}/// <summary>/// 批量发送短信/// </summary>/// <param name="phone">手机号码</param>/// <param name="signName">短信签名</param>/// <param name="templateCode">模板编号</param>/// <param name="templateParam">模板变量</param>/// <returns></returns>public static string SendBatchSms(List<string> phones, string templateCode, string templateParam){var dic = new Dictionary<string, string>();//公共请求参数dic.Add("Action", "SendBatchSms");dic.Add("Version", "2017-05-25");dic.Add("Format", "JSON");dic.Add("AccessKeyId", AccessKeyId);dic.Add("SignatureNonce", Guid.NewGuid().ToString());dic.Add("Timestamp", DateTime.UtcNow.ToString("yyyy-MM-dd'T'HH:mm:ss'Z'"));dic.Add("SignatureMethod", "HMAC-SHA1");dic.Add("SignatureVersion", "1.0");//请求参数var signs = new string[phones.Count];Array.Fill<string>(signs, SignName);dic.Add("PhoneNumberJson", phones.ToJson());dic.Add("SignNameJson", signs.ToJson());dic.Add("TemplateCode", templateCode);dic.Add("TemplateParamJson", templateParam);//接口签名var signature = GetSignature(dic, "GET", AccessKeySecret);dic.Add("Signature", signature);var parms = "";foreach (var pair in dic) parms += pair.Key + "=" + PercentEncode(pair.Value) + "&"; //参数值需用阿里云约定编码方式进行编码parms = parms.TrimEnd('&');return HttpGet(Url + parms);}/// <summary>/// 发起网络请求/// </summary>/// <param name="url"></param>/// <returns></returns>public static string HttpGet(string url){var encode = Encoding.UTF8;var request = (HttpWebRequest)WebRequest.Create(url);request.Method = "GET";request.ContentType = "text/html, application/xhtml+xml, */*";var response = (HttpWebResponse)request.GetResponse();var rs = response.GetResponseStream();var sr = new StreamReader(rs, encode);var result = sr.ReadToEnd();sr.Close();rs.Close();return result;}/// <summary>/// 签名算法/// </summary>/// <param name="signedParams"></param>/// <param name="method"></param>/// <param name="secret"></param>/// <returns></returns>public static string GetSignature(Dictionary<string, string> signedParams,string method,string secret){var list = signedParams.Keys.ToList();list.Sort(StringComparer.Ordinal); //排序var builder = new StringBuilder();foreach (var key in list)if (signedParams[key] != null)builder.Append("&").Append(PercentEncode(key)).Append("=").Append(PercentEncode(signedParams[key]));var builder2 = new StringBuilder();builder2.Append(method);builder2.Append(Separator);builder2.Append(PercentEncode("/"));builder2.Append(Separator);builder2.Append(PercentEncode(builder.ToString().Substring(1)));byte[] hash = { };using (var fromName = CryptoConfig.CreateFromName("HMACSHA1") as KeyedHashAlgorithm){if (fromName != null){fromName.Key = Encoding.UTF8.GetBytes(secret + Separator);hash = fromName.ComputeHash(Encoding.UTF8.GetBytes(builder2.ToString().ToCharArray()));}}return Convert.ToBase64String(hash);}/// <summary>/// 编码/// </summary>/// <param name="value"></param>/// <returns></returns>private static string PercentEncode(string value){if (value == null)return null;var stringBuilder = new StringBuilder();var str = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_.~";foreach (char ch in Encoding.UTF8.GetBytes(value))if (str.IndexOf(ch) >= 0)stringBuilder.Append(ch);elsestringBuilder.Append("%").Append(string.Format(CultureInfo.InvariantCulture, "{0:X2}", (int)ch));return stringBuilder.ToString().Replace("+", "%20").Replace("*", "%2A").Replace("%7E", "~");}public static string ToForm(IDictionary filter){if (filter == null)return string.Empty;var dictionary = filter.Keys.Cast<string>().ToDictionary(key => key, key => filter[key]);var dicOut = new Dictionary<string, string>();TileDict(dicOut, dictionary);var values = new List<string>();foreach (var keyValuePair in dicOut)if (!string.IsNullOrEmpty(keyValuePair.Value))values.Add(PercentEncode(keyValuePair.Key) + "=" + PercentEncode(keyValuePair.Value));return string.Join("&", values.ToArray());}internal static void TileDict(Dictionary<string, string> dicOut, object obj, string parentKey = ""){if (obj == null)return;if (typeof(IDictionary).IsAssignableFrom(obj.GetType())){foreach (var keyValuePair in ((IDictionary)obj).Keys.Cast<string>().ToDictionary(key => key, key => ((IDictionary)obj)[key])){var parentKey1 = parentKey + "." + keyValuePair.Key;if (keyValuePair.Value != null)TileDict(dicOut, keyValuePair.Value, parentKey1);}}else if (typeof(IList).IsAssignableFrom(obj.GetType())){var num = 1;foreach (var obj1 in (IEnumerable)obj){TileDict(dicOut, obj1, parentKey + "." + num.ToSafeString());++num;}}else if (obj.GetType() == typeof(byte[])){dicOut.Add(parentKey.TrimStart('.'), Encoding.UTF8.GetString((byte[])obj));}else{dicOut.Add(parentKey.TrimStart('.'), obj.ToSafeString(""));}}public static string ToSafeString(this object obj, string defaultStr = null){if (obj == null)return defaultStr;try{return obj.ToString();}catch{return defaultStr;}}}}
调用方式如下：
AliyunSmsHelper.SendBatchSms(list, "SMS_xxxxxxx", count);参考文档：
C# 阿里云短信接口调用（不使用SDK，单文件完成）_c#阿里云 验证短信发送-CSDN博客
我也是参考他的，他没有写批量发送