根据API获取数据内容

class Api
        {
            /// <summary>
            /// 从API中获取数据
            /// </summary>
            /// <param name="url"></param>
            /// <returns></returns>
            public static string HttpGet(string url)
            {
                //ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
                Encoding encoding = Encoding.UTF8;
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
                request.Method = "GET";
                request.Accept = "text/html, application/xhtml+xml, */*";
                request.ContentType = "application/json";

                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
                {
                    return reader.ReadToEnd();
                }
            }

            /// <summary>
            /// POST传参获取，url地址，msg参数
            /// </summary>
            /// <param name="https"></param>
            /// <param name="strContent"></param>
            /// <returns></returns>
            public static string Post(string url, string msg)
            {
                string result = "";
                HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
                req.Method = "POST";
                req.ContentType = "application/json";

                byte[] data = Encoding.UTF8.GetBytes(msg);
                req.ContentLength = data.Length;
                using (Stream reqStream = req.GetRequestStream())
                {
                    reqStream.Write(data, 0, data.Length);
                    reqStream.Close();
                }

                HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
                Stream stream = resp.GetResponseStream();
                //获取响应内容
                using (StreamReader sr = new StreamReader(stream, Encoding.UTF8))
                {
                    result = sr.ReadToEnd();
                }
                return result;
            }

        }