/// <summary>
/// 对数据进行签名
/// </summary>
/// <param name="requestMethod">请求方法.如GET或POST</param>
/// <param name="requestUrl">API请求地址</param>
/// <param name="parameters">提交参数</param>
/// <returns></returns>
public string GenerateSignature(string requestMethod, string requestUrl, Parameters parameters)
{
HMACSHA1 hmacsha1 = new HMACSHA1();
hmacsha1.Key = Encoding.UTF8.GetBytes(string.Format("{0}&{1}", Util.UrlEncode(this.AppSecret), Util.UrlEncode(this.TokenSecret)));
StringBuilder data = new StringBuilder(100);
data.AppendFormat("{0}&{1}&", requestMethod.ToUpper(), Util.UrlEncode(requestUrl));
//处理参数
if (parameters != null)
{
parameters.Sort();
data.Append(Util.UrlEncode(parameters.BuildQueryString(true)));
}
byte[] dataBuffer = System.Text.Encoding.UTF8.GetBytes(data.ToString());
byte[] hashBytes = hmacsha1.ComputeHash(dataBuffer);
return Convert.ToBase64String(hashBytes);
}