c# 後台GET、POST、PUT、DELETE傳輸發送json資料

標籤：get、post、   let   ati   res   pre   imu   tor   對象   try   

 

一、Get 方式傳輸

　　　　　//url為請求的網址，param參數為需要查詢的條件（服務端接收的參數，沒有則為null）        //返回該次請求的響應        public string HttpGet(string url, Dictionary<String, String> param)        {            if (param != null) //有參數的情況下，拼接url            {                url = url + "?";                foreach (var item in param)                {                    url = url + item.Key + "=" + item.Value + "&";                }                url = url.Substring(0, url.Length - 1);            }            HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;//建立請求            request.Method = "GET"; //要求方法為GET            HttpWebResponse res; //定義返回的response            try            {                res = (HttpWebResponse)request.GetResponse(); //此處發送了請求並獲得響應            }            catch (WebException ex)            {                res = (HttpWebResponse)ex.Response;            }            StreamReader sr = new StreamReader(res.GetResponseStream(), Encoding.UTF8);            string content = sr.ReadToEnd(); //響應轉化為String字串            return content;        }

二、POST 方式傳輸

public static string HttpPost(string url, Dictionary<String, String> param)        {            HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest; //建立請求            CookieContainer cookieContainer = new CookieContainer();            request.CookieContainer = cookieContainer;            request.AllowAutoRedirect = true;            //request.AllowReadStreamBuffering = true;            request.MaximumResponseHeadersLength = 1024;            request.Method = "POST"; //請求方式為post            request.AllowAutoRedirect = true;            request.MaximumResponseHeadersLength = 1024;            request.ContentType = "application/json";            JObject json = new JObject();            if (param.Count != 0) //將參數添加到json對象中            {                foreach (var item in param)                {                    json.Add(item.Key, item.Value);                }            }            string jsonstring = json.ToString();//獲得參數的json字串            byte[] jsonbyte = Encoding.UTF8.GetBytes(jsonstring);            Stream postStream = request.GetRequestStream();            postStream.Write(jsonbyte, 0, jsonbyte.Length);            postStream.Close();            //發送請求並擷取相應回應資料                   HttpWebResponse res;            try            {                res = (HttpWebResponse)request.GetResponse();            }            catch (WebException ex)            {                res = (HttpWebResponse)ex.Response;            }            StreamReader sr = new StreamReader(res.GetResponseStream(), Encoding.UTF8);            string content = sr.ReadToEnd(); //獲得響應字串            return content;        }

其中PUT、DELETE方式跟上面基本相似。這裡就不再多說明

c# 後台GET、POST、PUT、DELETE傳輸發送json資料