[C#] HTTP/HTTPS 송수신 (HttpWebRequest/HttpWebResponse)

밑에 소스는 Google Oauth 2.0 인증과 관련해서 RefeshToken 값을 이용해 AccessToken 값을 구하는 구글 API입니다.

"####################################" 이 들어간 문자는 중요한 값이라 일부러 숨겼습니다.

"대충 이런식으로 쓴다" 정도로 봐주시면 감사하겠습니다.

 

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Net; using System.IO;   namespace Http_Test {     class Program     {         static void Main(string[] args)         {             // 요청을 보내는 URI             string strUri = "https://accounts.google.com/o/oauth2/token";               // POST, GET 보낼 데이터 입력             StringBuilder dataParams = new StringBuilder();             dataParams.Append("client_id=#############################################");             dataParams.Append("&client_secret=####################################");             dataParams.Append("&refresh_token=####################################");             dataParams.Append("&grant_type=refresh_token");               // 요청 String -> 요청 Byte 변환             byte[] byteDataParams = UTF8Encoding.UTF8.GetBytes(dataParams.ToString());               /////////////////////////////////////////////////////////////////////////////////////             /* POST */             // HttpWebRequest 객체 생성, 설정             HttpWebRequest request = (HttpWebRequest)WebRequest.Create(strUri);             request.Method = "POST";    // 기본값 "GET"             request.ContentType = "application/x-www-form-urlencoded";             request.ContentLength = byteDataParams.Length;               /* GET */             // GET 방식은 Uri 뒤에 보낼 데이터를 입력하시면 됩니다.             /*             HttpWebRequest request = (HttpWebRequest)WebRequest.Create(strUri + "?" + dataParams);             request.Method = "GET";             */             //////////////////////////////////////////////////////////////////////////////////////                             // 요청 Byte -> 요청 Stream 변환             Stream stDataParams = request.GetRequestStream();             stDataParams.Write(byteDataParams, 0, byteDataParams.Length);             stDataParams.Close();               // 요청, 응답 받기             HttpWebResponse response = (HttpWebResponse)request.GetResponse();                           // 응답 Stream 읽기             Stream stReadData = response.GetResponseStream();             StreamReader srReadData = new StreamReader(stReadData, Encoding.Default);               // 응답 Stream -> 응답 String 변환             string strResult = srReadData.ReadToEnd();               Console.WriteLine(strResult);             Console.ReadLine();         }     } }

ex) web service 호출[json] -> DataSet / DataTable 생성

using System;
using System.Data;
using System.Net;
using System.IO;
using System.Text;
using System.Net.Json;
using System.Reflection;
using System.Collections.Generic;
using Newtonsoft.Json;

 

public DataSet SetDanwon(string Category)
{
    DataSet ds = new DataSet();

    string url = string.Format("http://ccapi.hbedu.co.kr/ccqb/category?site=drmath&subject=mth&emh=&services=&chapters={0}&ut=키값", Category);

    //string savepath = @"D:\webhost\Drmath\log\" + DateTime.Now.ToShortDateString() + "SetDanwon.txt";
    //System.IO.File.AppendAllText(savepath, url + "\r\n", Encoding.UTF8);


    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
    request.Method = "POST";

    Stream st = request.GetRequestStream();
    st.Close();

    HttpWebResponse response = (HttpWebResponse)request.GetResponse();
    Stream stream = response.GetResponseStream();
    StreamReader reader = new StreamReader(stream, Encoding.UTF8);

    string DanwonList = reader.ReadToEnd();
    stream.Close();
    response.Close();
    reader.Close();

    JsonTextParser parser = new JsonTextParser();

    JsonObject obj = parser.Parse(DanwonList);

    JsonObjectCollection col = (JsonObjectCollection)obj;

    JsonArrayCollection d = (JsonArrayCollection)col["d"];

    JsonNumericValue r = (JsonNumericValue)col["r"];
    JsonStringValue m = (JsonStringValue)col["m"];
    JsonNumericValue c = (JsonNumericValue)col["c"];


    JsonObject Result = parser.Parse("{" + d.ToString() + "}");

    ds = JsonConvert.DeserializeObject(Result.ToString());

    return ds;
}