/// <summary> Rsa签名 </summary>
/// <param name="dict"></param>
/// <param name="key"></param>
/// <param name="charset"></param>
/// <returns></returns>
public static string RsaSign(this IDictionary <string, string> dict, string key, string charset)
{
if (dict.ContainsKey("sign"))
{
dict.Remove("sign");
}
var data = dict.ParamsUrl(true, false);
return(AlipaySignature.RsaSign(data, key, charset));
}
