-------------------使用腾讯人脸核身,为什么提示400错误呢-----------

[雄牛]

服务已开通的,也是按文档来的,但为什么提示服务器400错误呢?
用的是C#进行的web浏览器打开测试,
但是为什么返回"远程服务器返回错误: (400) 错误的请求"错误呢,信息应该是没有错的.

参考文档链接:
https://cloud.tencent.com/document/product/460/8171?_ga=1.144850102.309154471.1515572675

            string secret_id = "****";
            string secret_key = "****";

  /// <summary>
        /// 消息抽样加密算法
        /// </summary>
        /// <param name="text"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        public static string HmacSha1Sign(string text, string key)
        {
            Encoding encode = Encoding.GetEncoding("utf-8");
            byte[] byteData = encode.GetBytes(text);
            byte[] byteKey = encode.GetBytes(key);
            HMACSHA1 hmac = new HMACSHA1(byteKey);
            CryptoStream cs = new CryptoStream(Stream.Null, hmac, CryptoStreamMode.Write);
            cs.Write(byteData, 0, byteData.Length);
            cs.Close();
            return Convert.ToBase64String(hmac.Hash);
        }

 /// <summary>
        /// Base64加密
        /// </summary>
        /// <param name="encode">加密采用的编码方式</param>
        /// <param name="source">待加密的明文</param>
        /// <returns></returns>
        public static string EncodeBase64(Encoding encode, string source)
        {
            string enString = "";
            byte[] bytes = encode.GetBytes(source);
            try
            {
                enString = Convert.ToBase64String(bytes);
            }
            catch
            {
                enString = source;
            }
            return enString;
        }

        /// <summary>
        /// Base64加密，采用utf8编码方式加密
        /// </summary>
        /// <param name="source">待加密的明文</param>
        /// <returns>加密后的字符串</returns>
        public static string EncodeBase64(string source)
        {
            return EncodeBase64(Encoding.UTF8, source);
        }



        /// <summary>
        /// 拼接原文
        /// </summary>
        /// <returns></returns>
        private string signStr()
        {
            /*
            a	开发者的项目ID，接入万象优图创建空间时系统生成的唯一标示项目的项目ID
            b	图片空间（存储桶）名称
            k	项目的 Secret ID
            e	签名的有效期，是一个符合 UNIX Epoch 时间戳规范的数值，单位为秒；单次签名时，e 必须设置为 0
            t	当前时间戳，是一个符合 UNIX Epoch 时间戳规范的数值，单位为秒，多次签名时，e 应大于 t
            r	随机串，无符号 10 进制整数，用户需自行生成，最长10 位
            u	历史遗留字段，请填 ‘0’
            f	资源存储的唯一标识，单次签名必填；多次签名选填，如填写则会验证与当前操作的文件路径是否一致。
             */
            string appid = "1234567890";
            string bucket = "tencentyun";
            //string secret_id = "****";
            //string secret_key = "****";
            long expired = GetTimeStampTen() + 2592000;
            string onceExpired = "0";
            long current = GetTimeStampTen();
            string rdm = rand(10);
            string userid = "0";
            string fileid = "";
            //不绑定资源
            string returnStr = "a=[" + appid + "]&b=[" + bucket + "]&k=[" + secret_id + "]&e=[" + Convert.ToString(expired) + "]&t=[" + Convert.ToString(current) + "]&r=[" + rdm + "]&u=[" + userid + "]&f=[" + fileid + "]";
            return returnStr;

        }

        /// <summary>
        /// 取得按规则取得的签名
        /// </summary>
        /// <returns></returns>
        private string EntrySign()
        {
            try
            {
                string hmacStr = HmacSha1Sign(signStr(), secret_key);
                string base64Str = EncodeBase64(hmacStr);
                return base64Str;
            }
            catch (System.Exception ex)
            {
                return "";
            }
            
        }

protected void Button1_Click(object sender, EventArgs e)
        {

            System.Net.WebClient webClient = new System.Net.WebClient();
            System.Collections.Specialized.NameValueCollection PostVars = new System.Collections.Specialized.NameValueCollection();
            PostVars.Add("appid", "1234567890");//appid
            PostVars.Add("idcard_number", "666666666666666666");//身份证号
            PostVars.Add("idcard_name", "老王");//姓名
            PostVars.Add("url", "http://www.xxxxxxxx.com/id1.jpg");//身份证图片
            PostVars.Add("session_id", "123456789000");

            webClient.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
            webClient.Headers.Add("Authorization", EntrySign());
            try
            {
                byte[] byRemoteInfo = webClient.UploadValues("http://service.image.myqcloud.com/face/idcardcompare", "POST", PostVars);
                //下面都没用啦，就上面一句话就可以了
                string sRemoteInfo = System.Text.Encoding.Default.GetString(byRemoteInfo);
                //这是获取返回信息
                TextBox1.Text += sRemoteInfo;
            }
            catch (System.Exception ex)
            {
                Response.Write(ex.ToString());
            }

        }