C# 后端请求 PostAsync GetStringAsync

                string sendUrl = $"http://10.172.1.20/wtoptst/ws/r/awsp920";
                HttpClient sendclient = new HttpClient();
                string testStr = JsonConvert.SerializeObject(reques);//查看内容（测试用）
                HttpContent PostParams = new StringContent(JsonConvert.SerializeObject(reques), Encoding.UTF8);//创建推送连接
                var postResult = await sendclient.PostAsync(sendUrl, PostParams);//post发送推送数据
                var content = await postResult.Content.ReadAsStringAsync();

            string getTokenUrl = $@"https://api.weixin.qq.com/cgi-bin/token";
            HttpClient tokenClient = new();
            string responseBody = await tokenClient.GetStringAsync(getTokenUrl);
            AccessTokenDto at = JsonConvert.DeserializeObject<AccessTokenDto>(responseBody);