由于需要进行短信发送，选择了百度的API，现贡献一下源码。
代码语言：javascript复制 /// <summary>
/// 百度接口签名帮助类
/// </summary>
public class BaiduApiHelper
{
#region 构造函数
/// <summary>
/// 构造函数
/// </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 内部成员
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("/");
}
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>
/// 发送POST请求
/// </summary>
/// <param name="method">请求方法，需要大写，列如(POST)</param>
/// <param name="host">主机地址列如(http://sms.bj.baidubce.com)</param>
/// <param name="url">接口地址列如(/bce/v2/message)</param>
/// <param name="paramters">参数列表</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>
/// 发送短信
/// </summary>
/// <param name="phoneNum">手机号码</param>
/// <param name="code">验证码</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
} 
