C# http接口请求

方法一：Get请求：

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/// <summary>        /// httpRequest        /// </summary>        /// <param name="url">http接口路径</param>        /// <returns>将http接口信息进行返回</returns>        public string httpRequest(string Url)        {            string retString = string.Empty;            try            {                LogHelper.WriteLog(GetType(), "httpRequest方法接收入参为：" + Url);                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);                request.Proxy = null;                request.KeepAlive = false;                request.Method = "GET";                request.ContentType = "application/json; charset=UTF-8";                request.AutomaticDecompression = DecompressionMethods.GZip;                HttpWebResponse response = (HttpWebResponse)request.GetResponse();                Stream myResponseStream = response.GetResponseStream();                StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.UTF8);                retString = myStreamReader.ReadToEnd();                myStreamReader.Close();                myResponseStream.Close();                //retString = System.Text.RegularExpressions.Regex.Unescape(retString);//字符串转义                if (response != null)                {                    response.Close();                }                if (request != null)                {                    request.Abort();                }              }            catch (Exception ex)            {                  LogHelper.WriteLog(GetType(), "httpRequest方法异常错误为：" + ex.Message);            }            LogHelper.WriteLog(GetType(), "httpRequest方法接收返回值为：" + retString);            return retString;        }

　　方法二Post请求：

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string url = "http://192.168.1.219:8088/system-demo-newui/public/index.php/zizhu/menzhen/hospital/getAdvert";//获取http地址        string json = "{\"devCode\":\"H000_0102\"}";//获取传参json串        public void cesi()        {            Post(url, json);        }        /// <summary>        /// post请求http接口        /// </summary>        /// <param name="Url">http接口路径</param>        /// <param name="jsonParas">传参json串</param>        /// <returns></returns>        public string Post(string Url, string jsonParas)        {            string postContent = string.Empty;            HttpWebResponse response;            try            {                LogHelper.WriteLog(GetType(), "进入Post方法，入参为：" + Url + ",入参2为：" + "jsonParas");                string strURL = Url;                //创建一个HTTP请求                 HttpWebRequest request = (HttpWebRequest)WebRequest.Create(strURL);                //Post请求方式                 request.Method = "POST";                //内容类型                request.ContentType = "application/json";                //设置参数，并进行URL编码                string paraUrlCoded = jsonParas;//System.Web.HttpUtility.UrlEncode(jsonParas);                  byte[] payload;                //将Json字符串转化为字节                 payload = System.Text.Encoding.UTF8.GetBytes(paraUrlCoded);                //设置请求的ContentLength                  request.ContentLength = payload.Length;                //发送请求，获得请求流                Stream writer;                try                {                    writer = request.GetRequestStream();//获取用于写入请求数据的Stream对象                }                catch (Exception ex)                {                    writer = null;                    LogHelper.WriteLog(GetType(), "Post获取用于写入请求数据的Stream对象异常错误：" + ex.Message);                    //  Console.Write("连接服务器失败!");                }                //将请求参数写入流                writer.Write(payload, 0, payload.Length);                writer.Close();//关闭请求流                               // String strValue = "";//strValue为http响应所返回的字符流                try                {                    //获得响应流                    response = (HttpWebResponse)request.GetResponse();                }                catch (WebException ex)                {                    response = ex.Response as HttpWebResponse;                }                Stream s = response.GetResponseStream();                //  Stream postData = Request.InputStream;                StreamReader sRead = new StreamReader(s);                postContent = sRead.ReadToEnd();                sRead.Close();            }            catch (Exception ex)            {                LogHelper.WriteLog(GetType(), "Post请求接口异常错误：" + ex.Message);            }            return postContent;//返回Json数据        }