c#http请求

一、HttpWebRequest

 public string  Post(string url, string data) 
        {  
            Stream dataStream = null;
            HttpWebRequest request = null;
            HttpWebResponse response = null;
            StreamReader reader = null;
            try
            {
                byte[] dataArray = Encoding.GetEncoding("utf-8").GetBytes(data);
                //创建请求
                request = (HttpWebRequest)HttpWebRequest.Create(url);

                request.Credentials = CredentialCache.DefaultCredentials;
                request.CookieContainer = new CookieContainer();
                request.Method = "POST";
                request.ContentType = "application/json";//访问规则
                request.ContentLength = dataArray.Length;//数据长度
                dataStream = request.GetRequestStream();
                dataStream.Write(dataArray, 0, dataArray.Length);
                response = (HttpWebResponse)request.GetResponse();//获取返回值
                reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
                return reader.ReadToEnd();
            }
            catch (Exception ex)
            {
              
            }
            finally
            {

　　　　　　　　　　　reader?.Close();
　　　　　　　　　　　response?.Close();
　　　　　　　　　　　dataStream?.Close();
　　　　　　　　　　　request?.Abort();

            }

            return "";
        }

二、HttpClient

 

 public string Post(string data ,string url) 
 {
     string content = ((data == null) ? "" : JsonConvert.SerializeObject(data));
     StringContent stringContent = new StringContent(content);
     stringContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
     stringContent.Headers.ContentType.CharSet = "utf-8";
     HttpClientHandler handler = new()
     {
         AutomaticDecompression = DecompressionMethods.GZip
     };
     using HttpClient httpClient = new(handler);
     httpClient.Timeout = new TimeSpan(0, 0, 5, 0);

     HttpResponseMessage result = httpClient.PostAsync(url, stringContent).Result;
   
     string result2 = result.Content.ReadAsStringAsync().Result;
     JObject jObject = JsonConvert.DeserializeObject<JObject>(result2.ToString());
     JToken[] array = [.. jObject.Children()];
     return (array[0] as JProperty).Value.ToString();
 }