[ASP.NET] WebAPI RESTful Service Client C# 웹API 레스트서비스 클라이언트 소스 POST GET 전송

출처 : http://rest.elkstein.org/2008/02/using-rest-in-c-sharp.html

using System;

using System.Collections.Generic;

using System.IO;

using System.Net;

using System.Text;

public class WebApiUtil

{

public static bool HttpGet(string url, out string Msg)

{

// SSL 사용시에 SSL 인증서가 맞지 않더라도 통과하게 하는 부분, 테스트시에만 사용하고 제품에는 나가지 않도록 하는 것이 좋다

ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;

ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };

bool _flag = false;

HttpWebRequest req = WebRequest.Create(url) as HttpWebRequest;

using (HttpWebResponse resp = req.GetResponse() as HttpWebResponse)

{

if (resp.StatusCode == HttpStatusCode.OK)

{

_flag = true;

}

StreamReader reader = new StreamReader(resp.GetResponseStream(), Encoding.GetEncoding("UTF-8"));

Msg = reader.ReadToEnd();

}

return _flag;

}

public static bool HttpPost(string url, Dictionary<string, string> paramList, out string Msg)

{

ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;

ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };

bool _flag = false;

HttpWebRequest req = WebRequest.Create(new Uri(url)) as HttpWebRequest;

req.Method = "POST";

req.ContentType = "application/x-www-form-urlencoded; charset=UTF-8";

// Build a string with all the params, properly encoded.

// We assume that the arrays paramName and paramVal are

// of equal length:

StringBuilder paramz = new StringBuilder();

foreach (KeyValuePair<string, string> param in paramList)

{

paramz.Append(param.Key);

paramz.Append("=");

paramz.Append(System.Web.HttpUtility.UrlEncode(param.Value));

paramz.Append("&");

}

// Encode the parameters as form data:

byte[] formData = UTF8Encoding.UTF8.GetBytes(paramz.ToString());

req.ContentLength = formData.Length;

// Send the request:

using (Stream post = req.GetRequestStream())

{

post.Write(formData, 0, formData.Length);

post.Flush();

}

// Pick up the response:

using (HttpWebResponse resp = req.GetResponse() as HttpWebResponse)

{

if (resp.StatusCode == HttpStatusCode.OK)

{

_flag = true;

}

StreamReader reader = new StreamReader(resp.GetResponseStream(), Encoding.GetEncoding("UTF-8"));

Msg = reader.ReadToEnd();

}

return _flag;

}

public static bool HttpPost(string url, object obj, out string Msg)

{

ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;

ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };

bool _flag = false;

HttpWebRequest req = WebRequest.Create(new Uri(url)) as HttpWebRequest;

req.Method = "POST";

req.ContentType = "application/x-www-form-urlencoded; charset=UTF-8";

// Build a string with all the params, properly encoded.

// We assume that the arrays paramName and paramVal are

// of equal length:

string jsonString = new JavaScriptSerializer().Serialize(obj);

StringBuilder paramz = new StringBuilder();

paramz.Append("param=");

paramz.Append(System.Web.HttpUtility.UrlEncode(jsonString));

// Encode the parameters as form data:

byte[] formData = UTF8Encoding.UTF8.GetBytes(paramz.ToString());

req.ContentLength = formData.Length;

// Send the request:

using (Stream post = req.GetRequestStream())

{

post.Write(formData, 0, formData.Length);

post.Flush();

}

// Pick up the response:

using (HttpWebResponse resp = req.GetResponse() as HttpWebResponse)

{

if (resp.StatusCode == HttpStatusCode.OK)

{

_flag = true;

}

StreamReader reader = new StreamReader(resp.GetResponseStream(), Encoding.GetEncoding("UTF-8"));

Msg = reader.ReadToEnd();

}

return _flag;

}

private string paramzToJson(IDictionary<string, string> paramList)

{

StringBuilder paramz = new StringBuilder();

paramz.Append("{");

foreach (KeyValuePair<string, string> param in paramList)

{

if (paramz.Length > 1)

paramz.Append(" ,");

paramz.Append(String.Format("\"{0}\"", param.Key));

paramz.Append(" : ");

paramz.Append(String.Format("\"{0}\"", System.Web.HttpUtility.UrlEncode(param.Value)));

}

paramz.Append("}");

return paramz.ToString();

}

}