C# 获取Header中的token值

   public CurrentUser currentUser
         {
             get
             {
                 CurrentUser result = new CurrentUser();
                 //jwt 解密token
                 IJsonSerializer serializer = new JsonNetSerializer();
                 IDateTimeProvider provider = new UtcDateTimeProvider();
                 IJwtValidator validator = new JwtValidator(serializer, provider);
                 IBase64UrlEncoder urlEncoder = new JwtBase64UrlEncoder();
                 IJwtDecoder decoder = new JwtDecoder(serializer, validator, urlEncoder);
                 string authHeader = this.Request.Headers["Authorization"];//Header中的token
                 // Add JWT　Protection
                 if (authHeader != null && authHeader.StartsWith("Bearer"))
                 {
                     string token = authHeader.Substring("Bearer ".Length).Trim();
                     var requestService = HttpContext.RequestServices;
                     var conf = requestService.GetService(typeof(IConfiguration)) as IConfiguration;
                     var secretKey = conf["AAA:BBB"];//密钥信息
                     string resultstr = decoder.Decode(token, secretKey, verify: true);//token为之前生成的字符串

                     result = JsonConvert.DeserializeObject<CurrentUser>(resultstr);//反序列化 将jwt中的信息解压出来
                 }
                 else
                 {
                     //Handle what happens if that isn't the case
                     throw new Exception("The authorization header is either empty or isn't Basic.");
                 }
                 return result;
             }
         }