简单发送短信功能.net core版实用技巧

简单发送短信功能.net core版实用技巧

下面是.net core版实现，只是简单发送短信功能： 

using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Security.Cryptography;
using System.Text;
using Newtonsoft.Json;

namespace ConsoleApp1
{
public class SmsHelper
{
public static string Post(string url, string data, Encoding encoding)
{
try
{
HttpWebRequest req = WebRequest.CreateHttp(new Uri(url));
req.ContentType = "application/x-www-form-urlencoded;charset=utf-8";
req.Method = "POST";
req.Accept = "text/xml,text/javascript";
req.ContinueTimeout = 60000;

byte[] postData = encoding.GetBytes(data);
Stream reqStream = req.GetRequestStreamAsync().Result;
reqStream.Write(postData, 0, postData.Length);
reqStream.Dispose();

var rsp = (HttpWebResponse)req.GetResponseAsync().Result;
var result = GetResponseAsString(rsp, encoding);
return result;
}
catch (Exception ex)
{
throw;
}
}

public static T Post<T>(string url, string data, Encoding encoding)
{
try
{
var result = Post(url, data, encoding);
return JsonConvert.DeserializeObject<T>(result);
}
catch (Exception ex)
{
return default(T);
}
}

public static string BuildQuery(IDictionary<string, string> parameters)
{
if (parameters == null || parameters.Count == 0)
{
return null;
}

StringBuilder query = new StringBuilder();
bool hasParam = false;

foreach (KeyValuePair<string, string> kv in parameters)
{
string name = kv.Key;
string value = kv.Value;
// 忽略参数名或参数值为空的参数
if (!string.IsNullOrEmpty(name) && !string.IsNullOrEmpty(value))
{
if (hasParam)
{
query.Append("&");
}

query.Append(name);
query.Append("=");
query.Append(WebUtility.UrlEncode(value));
hasParam = true;
}
}

return query.ToString();
}

public static string GetResponseAsString(HttpWebResponse rsp, Encoding encoding)
{
Stream stream = null;
StreamReader reader = null;

try
{
// 以字符流的方式读取HTTP响应
stream = rsp.GetResponseStream();
reader = new StreamReader(stream, encoding);
return reader.ReadToEnd();
}
finally
{
// 释放资源
if (reader != null) reader.Dispose();
if (stream != null) stream.Dispose();
if (rsp != null) rsp.Dispose();
}
}

public static string GetAlidayuSign(IDictionary<string, string> parameters, string secret, string signMethod)
{
//把字典按Key的字母顺序排序
IDictionary<string, string> sortedParams = new SortedDictionary<string, string>(parameters, StringComparer.Ordinal);

//把所有参数名和参数值串在一起
StringBuilder query = new StringBuilder();
if (Constants.SIGN_METHOD_MD5.Equals(signMethod))
{
query.Append(secret);
}
foreach (KeyValuePair<string, string> kv in sortedParams)
{
if (!string.IsNullOrEmpty(kv.Key) && !string.IsNullOrEmpty(kv.Value))
{
query.Append(kv.Key).Append(kv.Value);
}
}

//使用MD5/HMAC加密
if (Constants.SIGN_METHOD_HMAC.Equals(signMethod))
{
return Hmac(query.ToString(), secret);
}
else
{
query.Append(secret);
return Md5(query.ToString());
}
}

public static string Hmac(string value, string key)
{
byte[] bytes;
using (var hmac = new HMACMD5(Encoding.UTF8.GetBytes(key)))
{
bytes = hmac.ComputeHash(Encoding.UTF8.GetBytes(value));
}
StringBuilder result = new StringBuilder();
foreach (byte t in bytes)
{
result.Append(t.ToString("X2"));

}
return result.ToString();
}

public static string Md5(string value)
{
byte[] bytes;
using (var md5 = MD5.Create())
{
bytes = md5.ComputeHash(Encoding.UTF8.GetBytes(value));
}
var result = new StringBuilder();
foreach (byte t in bytes)
{
result.Append(t.ToString("X2"));
}
return result.ToString();
}

public static SmsResultAli SendSms(string url, string appKey, string appSecret, DateTime timestamp, Dictionary<string, string> parsms)
{
var txtParams = new SortedDictionary<string, string>();
txtParams.Add(Constants.METHOD, "alibaba.aliqin.fc.sms.num.send");
txtParams.Add(Constants.VERSION, "2.0");
txtParams.Add(Constants.SIGN_METHOD, Constants.SIGN_METHOD_HMAC);
txtParams.Add(Constants.APP_KEY, appKey);
txtParams.Add(Constants.FORMAT, "json");
txtParams.Add(Constants.TIMESTAMP, timestamp.ToString(Constants.DATE_TIME_FORMAT));
txtParams.Add(Constants.SMS_TYPE, "normal");
foreach (var item in parsms)
{
txtParams.Add(item.Key,item.Value);
}

txtParams.Add(Constants.SIGN, GetAlidayuSign(txtParams, appSecret, Constants.SIGN_METHOD_HMAC));
var result = Post<SmsResultAli>(url, BuildQuery(txtParams), Encoding.UTF8);

return result;
}

}

public class SmsResultAli
{
public SmsResponseALi Alibaba_Aliqin_Fc_Sms_Num_Send_Response { get; set; }
}

public class SmsResponseALi
{
public string Request_Id { get; set; }
public SmsResponseResultAli Result { get; set; }
}

public class SmsResponseResultAli
{
public string Err_Code { get; set; }

public string Model { get; set; }

public bool Success { get; set; }
}
}

发送短信时：

var parms = new Dictionary<string, string>();
parms.Add(Constants.EXTEND, "123456");
parms.Add(Constants.REC_NUM, "138********");
parms.Add(Constants.SMS_FREE_SIGN_NAME, "霍山网站建设尚仁建站");
parms.Add(Constants.SMS_PARAM, "{\"code\":\"1234\",\"product\":\"霍山网站建设尚仁建站\"}");
parms.Add(Constants.SMS_TEMPLATE_CODE, "SMS_10000000");

var req = SmsHelper.SendSms("http://gw.api.taobao.com/router/rest", "appKey", "appSecret", DateTime.Now, parms);