카카오 지도 api 사용

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import java.io.BufferedReader; import java.io.InputStreamReader; import java.net.URL; import java.net.URLEncoder;   import javax.net.ssl.HttpsURLConnection; public class KakaoGeoApi1 {       public static void main(String[] args) throws Exception {                      System.out.println(addrToCoord(URLEncoder.encode("주소입력","UTF-8")));      System.out.println(coordToAddr("37.5665958","126.9783813"));     }           public static String addrToCoord(String addr){                String url = "https://dapi.kakao.com/v2/local/search/address.json?query="+addr;         String json = "";         try{             json = getJSONData(url);         }catch(Exception e){                           e.printStackTrace();         }         return json;     }       public static String coordToAddr(String x, String y){             String url = "https://dapi.kakao.com/v2/local/geo/coord2address.json?x="+x+"&y="+y+"&input_coord=WGS84";         String json = "";         try{             json = getJSONData(url);         }catch(Exception e){                           e.printStackTrace();         }         return json;     }                 private static String getJSONData(String apiUrl) throws Exception {         String jsonString = new String();         String buf;         String apikey = "apikey"; //apikey                   URL url = new URL(apiUrl);         HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();         String auth = "KakaoAK "+apikey;         conn.setRequestMethod("GET");         conn.setRequestProperty("X-Requested-With", "curl");         conn.setRequestProperty("Authorization", auth);                   BufferedReader br = new BufferedReader(new InputStreamReader(                 conn.getInputStream(), "UTF-8"));         while ((buf = br.readLine()) != null) {             jsonString += buf;         }         return jsonString;     } }