C#使用Restful Api : GET
GET方法，沒有傳入參數。僅有URL、timeOut
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| public static void GET(string url, int timeOut)
{
HttpWebResponse response;
try
{
// 使用 HttpWebRequest.Create 實際上也是呼叫 WebRequest.Create
WebRequest request = WebRequest.Create(url);
//指定 request 使用的 http verb
request.Method = "GET";
request.Timeout = timeOut;
//使用 GetResponse 方法將 request 送出，如果不是用 using 包覆，請記得手動 close WebResponse 物件，避免連線持續被佔用而無法送出新的 request
response = (HttpWebResponse)request.GetResponse();
}
catch (WebException ex)
{
LogUtil.logger.Error(Convert.ToString(ex));
//網站回應錯誤,
_ = (HttpWebResponse)ex.Response;
return;
}
if (response != null)
{
response.Close();
}
return;
}
|
GET方法，有傳入參數。
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| public static byte[] GET(string url, NameValueCollection values)
{
HttpWebResponse response;
try
{
var queryString = ToQueryString(values);
LogUtil.logger.Debug("queryString:" + queryString);
var request = WebRequest.Create(url + queryString);
request.Method = "GET";
request.Timeout = timeout_5;
response = (HttpWebResponse)request.GetResponse();
}
catch (WebException ex)
{
LogUtil.logger.Error(Convert.ToString(ex));
//網站回應錯誤,
_ = (HttpWebResponse)ex.Response;
return null;
}
if (response != null)
{
if (response.StatusCode == HttpStatusCode.OK)
{
using (var responseStream = response.GetResponseStream())
using (var stream = new MemoryStream())
{
responseStream.CopyTo(stream);
return stream.ToArray();
}
}
response.Close();
}
return null;
}
private static string ToQueryString(NameValueCollection col)
{
return string.Join("&", col.AllKeys.Select(key => string.Format("{0}={1}", HttpUtility.UrlEncode(key), HttpUtility.UrlEncode(col[key]))));
}
|