- 기본코드
String urlStr = "https://www.instagram.com/web/search/topsearch/?context=blended&query=java";
URL url = null;
HttpURLConnection connection = null;
BufferedReader reader = null;
try {
url = new URL(urlStr);
connection = urlStr.startsWith("https://") ? (HttpsURLConnection) url.openConnection() : (HttpURLConnection) url.openConnection();
connection.setRequestProperty("Content-Type", "application/json; charset=utf-8");
connection.setRequestProperty("cache-control", "no-cache");
connection.connect();
int code = connection.getResponseCode();
String message = connection.getResponseMessage();
StringBuffer buffer = null;
if (code == HttpURLConnection.HTTP_OK) {
buffer = new StringBuffer();
reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));
String temp = null;
while ((temp = reader.readLine()) != null) {
buffer.append(temp);
}
reader.close();
}
connection.disconnect();
System.out.println(String.format("Response : %d, %s", code, message));
System.out.println("Response DATA : ");
System.out.println(buffer == null ? "NULL " : buffer.toString());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
- 결과
Response : 200, OK
Response DATA :
{}
> URL 문자열에서 HTTPS를 판단해서 캐스팅 할 클래스를 선택
> Restful API 사양에 맞는 RequestHeader 설정
> 예제코드에서 사용한 Restful API 주소는 인스타그램 검색 API
