/// <summary> /// 构建Sign /// </summary> /// <param name="parameters">参数列表</param> /// <param name="secret">app_secret</param> /// <returns></returns> public static string SignTopRequest(SortedDictionary <string, string> parameters, string secret) { // 第一步:把字典按Key的字母顺序排序 IDictionary <string, string> sortedParams = new SortedDictionary <string, string>(parameters, StringComparer.Ordinal); IEnumerator <KeyValuePair <string, string> > dem = sortedParams.GetEnumerator(); // 第二步:把所有参数名和参数值串在一起 StringBuilder query = new StringBuilder(); query.Append(secret); while (dem.MoveNext()) { string key = dem.Current.Key; string value = dem.Current.Value; if (!string.IsNullOrEmpty(key) && !string.IsNullOrEmpty(value)) { query.Append(key).Append(value); } } // 第三步:使用MD5/HMAC加密 string result = string.Empty; result = AlipayMD5.Sign(query.ToString(), secret, Encoding.UTF8); return(result); }
/// <summary> /// 生成请求时的签名 /// </summary> /// <param name="sPara">请求给支付宝的参数数组</param> /// <param name="signType">签名方式</param> /// <param name="key">交易安全校验码</param> /// <param name="code">字符编码格式</param> /// <returns>签名结果</returns> private static string BuildRequestMysign(Dictionary <string, string> sPara, string signType, string key, Encoding code) { //把数组所有元素,按照“参数=参数值”的模式用“&”字符拼接成字符串 string prestr = AlipayCore.CreateLinkString(sPara); //把最终的字符串签名,获得签名结果 string mysign = ""; switch (signType) { case "MD5": mysign = AlipayMD5.Sign(prestr, key, code); break; default: mysign = ""; break; } return(mysign); }