week15.java

package scripts;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;


public class week15 {


    public static void main(String[] args) throws ParseException {
        String clientId = "Xl16Z_8Q9JZ5_JHElrh3"; //애플리케이션 클라이언트 아이디값"
        String clientSecret = "AOTfVXS4wL"; //애플리케이션 클라이언트 시크릿값"

        System.out.print("검색어를 입력하세요: ");
        Scanner sc = new Scanner(System.in);
        String query = sc.next();
        String text = null;
        
        try {
            text = URLEncoder.encode(query, "UTF-8");
        } catch (UnsupportedEncodingException e) {
            throw new RuntimeException("검색어 인코딩 실패",e);
        }


        String apiURL = "https://openapi.naver.com/v1/search/movie?query=" + text;    // json 결과
        //String apiURL = "https://openapi.naver.com/v1/search/blog.xml?query="+ text; // xml 결과


        Map<String, String> requestHeaders = new HashMap<>();
        requestHeaders.put("X-Naver-Client-Id", clientId);
        requestHeaders.put("X-Naver-Client-Secret", clientSecret);
        String responseBody = get(apiURL,requestHeaders);
        

        JSONParser jsonParser = new JSONParser();
        JSONObject jsonObject = (JSONObject) jsonParser.parse(responseBody);
        JSONArray infoArray = (JSONArray) jsonObject.get("items");
        
        for(int i = 0; i < infoArray.size(); i++) {
        	System.out.println("=item_" + i + "===========================================");
        	JSONObject itemObject = (JSONObject) infoArray.get(i);
        	System.out.println("title:     \t" + itemObject.get("title"));
        	System.out.println("subtitle:  \t" + itemObject.get("subtitle"));
        	System.out.println("director:  \t" + itemObject.get("director"));
        	System.out.println("actor:     \t" + itemObject.get("actor"));
        	System.out.println("userRating:\t" + itemObject.get("userRating"));
        }
        
        
    }


    private static String get(String apiUrl, Map<String, String> requestHeaders){
        HttpURLConnection con = connect(apiUrl);
        try {
            con.setRequestMethod("GET");
            for(Map.Entry<String, String> header :requestHeaders.entrySet()) {
                con.setRequestProperty(header.getKey(), header.getValue());
            }


            int responseCode = con.getResponseCode();
            if (responseCode == HttpURLConnection.HTTP_OK) { // 정상 호출
                return readBody(con.getInputStream());
            } else { // 에러 발생
                return readBody(con.getErrorStream());
            }
        } catch (IOException e) {
            throw new RuntimeException("API 요청과 응답 실패", e);
        } finally {
            con.disconnect();
        }
    }


    private static HttpURLConnection connect(String apiUrl){
        try {
            URL url = new URL(apiUrl);
            return (HttpURLConnection)url.openConnection();
        } catch (MalformedURLException e) {
            throw new RuntimeException("API URL이 잘못되었습니다. : " + apiUrl, e);
        } catch (IOException e) {
            throw new RuntimeException("연결이 실패했습니다. : " + apiUrl, e);
        }
    }


    private static String readBody(InputStream body) throws UnsupportedEncodingException{
        InputStreamReader streamReader = new InputStreamReader(body, "UTF-8");


        try (BufferedReader lineReader = new BufferedReader(streamReader)) {
            StringBuilder responseBody = new StringBuilder();


            String line;
            while ((line = lineReader.readLine()) != null) {
                responseBody.append(line);
            }


            return responseBody.toString();
        } catch (IOException e) {
            throw new RuntimeException("API 응답을 읽는데 실패했습니다.", e);
        }
    }
}