/// <summary> /// all StringField will be signed and will add timespan,appid,appsecret; appid、appsecret from web.config or app.config /// </summary> /// <param name="para"></param> /// <returns></returns> public static void DefaultSignProvider(List <ParmField> para) { if (para == null) { para = new List <ParmField>(); } para.Add(new StringField("timespan", Authcomm.GetTimeSpan())); para.Add(new StringField("appid", Authcomm.GetAppConfig("appid"))); string appsecret = Authcomm.GetAppConfig("appsecret"); StringBuilder sb = new StringBuilder(); foreach (ParmField f in para) { if (string.IsNullOrEmpty(f.Value)) { continue; } if (f.GetType() == typeof(StringField)) { sb.Append(f.Key.Trim() + "=" + f.Value.Trim() + "&"); } } sb.Append("appsecret=" + appsecret); string sign = Authcomm.ToMD5String(sb.ToString()); para.Add(new StringField("sign", sign)); }