/// <summary>
        /// 启用Jwt验证
        /// </summary>
        /// <param name="services"></param>
        /// <param name="hosting"></param>
        public static void AddJwt(this IServiceCollection services, IWebHostEnvironment hosting)
        {
            // 从文件读取密钥
            string keyDir = hosting.ContentRootPath;

            if (!EncryptorHelper.TryGetKeyParameters(keyDir, true, out RSAParameters keyParams))
            {
                keyParams = EncryptorHelper.GenerateRSAKeysAndSave(keyDir);
            }
            JWTTokenOptions _tokenOptions = new JWTTokenOptions();

            _tokenOptions.Key         = new RsaSecurityKey(keyParams);
            _tokenOptions.Credentials = new SigningCredentials(_tokenOptions.Key, SecurityAlgorithms.RsaSha256Signature);

            _AddJwt(services, _tokenOptions);
        }