通过Get/Post发起http请求

Get请求

        public static string HttpGet(string url)
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.Method = "GET";
            request.ContentType = "text/html;charset=UTF-8";
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            Stream myResponseStream = response.GetResponseStream();
            StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.UTF8);
            string retString = myStreamReader.ReadToEnd();
            myStreamReader.Close();
            myResponseStream.Close();
            return retString;
        }

调用方法

string url = "https://openapi.mafengwo.cn/oauth2/token?client_id=1234&client_secret=5678";
var resStr = HttpGet(url);

Post请求

        public static string Post(string url, string postData)
        {
            //请求
            WebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.Method = "POST";
            request.ContentType = "application/x-www-form-urlencoded;charset=utf-8";
            request.ContentLength = Encoding.UTF8.GetByteCount(postData);
            byte[] postByte = Encoding.UTF8.GetBytes(postData);
            Stream reqStream = request.GetRequestStream();
            reqStream.Write(postByte, 0, postByte.Length);
            reqStream.Close();

            //响应
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            Stream myResponseStream = response.GetResponseStream();
            StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));
            string retString = myStreamReader.ReadToEnd();
            myStreamReader.Close();
            myResponseStream.Close();
            return retString;
        }

调用方法

var str = string.Format("partnerId={0}&action={1}&timestamp={2}&nonce={3}&data={4}&sign={5}&access_token={6}", partnerId, action, timestamp, nonce, data, sign, access_token);
var responseData = Post("https://openapi.mafengwo.cn/deals/rest", str);