using System;

using System.Net;

using System.Security.Cryptography;

using System.Text;

using System.Web;

namespace GroupDemo

{

class Program

{

private const string Account = ""; //您在云智信平台注册的手机号

private const string TradeKey = "";//您申请的交易密钥

private const string RequestUrl = "http://api.yunzhixin.com:11140/txp/smsGroup";//提交批量短信的地址

public static void Main(string[] args)

{

//接收方手机号(以英文逗号隔开)

string mobile = "";

//模版编号

string tplId = "";

//模版所需参数

string param = "";

//拼接加密原串

string signSource = $"{Account}|{tplId}#{TradeKey}";

//调用加密方法，取得加密密文

string sign = Md5Encrypt(signSource, Encoding.UTF8);

//拼接请求参数

try

{

string response = HttpPost(RequestUrl, postData, Encoding.UTF8);

Console.WriteLine(response);

}

catch

{

//ignore

}

}

public static string Md5Encrypt(string input)

{

var md5 = new MD5CryptoServiceProvider();

var buffer = md5.ComputeHash(Encoding.UTF8.GetBytes(input));

var builder = new StringBuilder(32);

foreach (var t in buffer)

{

builder.Append(t.ToString("x").PadLeft(2, '0'));

}

return builder.ToString();

}

private static string HttpPost(string Url, string data,Encoding enc)

{

var postdata = enc.GetBytes(data);

var webClient = new WebClient { Encoding = enc };

webClient.Headers.Add(HttpRequestHeader.KeepAlive, "False");

webClient.Headers.Add("Content-Type", "application/x-www-form-urlencoded");

var response = webClient.UploadData(url, "POST", postdata);

return enc.GetString(response);

}

}

}