C# HTTP request相关总结

             1
            async  ReadUrlAsync(int tempid)
 2        {
 3 4 5using (var client = new HttpClient())
 6            {
 7                 client.DefaultRequestHeaders.Add("Accept", "application/json;odata=verbose");//header什么的添加,修改
 8var data = await client.GetStringAsync("http://baidu.com");
 910                json(data.ToString());//对得到的数据的处理
1112            }
13         }

            public
            static
            string
             GetData()
        {
            
            
            string URL = "http://baidu.com";
            HttpWebRequest webReq = (HttpWebRequest)WebRequest.Create(URL);
            webReq.Method = "get";

            try
            {
                HttpWebResponse response = (HttpWebResponse)webReq.GetResponse();
                Stream myResponseStream = response.GetResponseStream();
                StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));
                string retString = myStreamReader.ReadToEnd();
                myStreamReader.Close();
                myResponseStream.Close();
                if (retString != "")
                    return ToUnicode(retString);
                elsereturn"-1";
            }
            catch
            {
                return"-1";
            }
        }

            public
            void PostData(string strText)
    {
        string URL = "baidu.com";
        string strPostdata = "A=213&B=213";  //要post的数据
        Encoding encoding = Encoding.Default;
        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(URL);
        request.Method = "post";byte[] buffer = encoding.GetBytes(strPostdata);
        request.ContentLength = buffer.Length;

        request.GetRequestStream().Write(buffer, 0, buffer.Length);
        HttpWebResponse response = (HttpWebResponse)request.GetResponse();
        StreamReader reader = new StreamReader(response.GetResponseStream(), System.Text.Encoding.GetEncoding("utf-8"));
        
        reader.readtoend();
    }

            var values = new List<KeyValuePair<string, string>>
                    {
                        new KeyValuePair<string, string>("api_key", "12345"),
                        new KeyValuePair<string, string>("game_id", "123456")
                    };

var httpClient = new HttpClient(new HttpClientHandler());
HttpResponseMessage response = await httpClient.PostAsync(url, new FormUrlEncodedContent(values));
response.EnsureSuccessStatusCode();
var responseString = await response.Content.ReadAsStringAsync();