공휴일API 사용 및 xml파싱해서 값가져오기

1.사이트 접속해서 회원가입후 api 키 발급

사이트주소 : https://www.data.go.kr/data/15012690/openapi.do

한국천문연구원_특일 정보

 

해당 사이트에 들어가보면 예제코드가 있긴한데 대체 어떻게 값을 뽑아먹는거야?? 라고 고민에 빠지게 됩니다~ㅎ

그래서 아래 예제를 통해 실행해보시고 각자의 상황에 맞게 값을 꺼내다가 요긴하게 쓰시면 되겠습니다.

 

 

#샘플코드1번 : 위 사이트에서 java 샘플코드 내용그대로입니다

package test;
 
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
 
import javax.xml.parsers.ParserConfigurationException;
 
import org.xml.sax.SAXException;
 
public class TestRun2 {
    public static void main(String[] args) throws IOException, ParserConfigurationException, SAXException{
        StringBuilder urlBuilder = new StringBuilder("http://apis.data.go.kr/B090041/openapi/service/SpcdeInfoService/getRestDeInfo"); /*URL*/
        urlBuilder.append("?" + URLEncoder.encode("serviceKey","UTF-8") + "="); /*Service Key*/
        urlBuilder.append("&" + URLEncoder.encode("solYear","UTF-8") + "=" + URLEncoder.encode("2021", "UTF-8")); /*연*/
        urlBuilder.append("&" + URLEncoder.encode("solMonth","UTF-8") + "=" + URLEncoder.encode("10", "UTF-8")); /*월*/
        URL url = new URL(urlBuilder.toString());
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("GET");
        conn.setRequestProperty("Content-type", "application/json");
        
        System.out.println("Response code: " + conn.getResponseCode());
        
        BufferedReader rd;
        if(conn.getResponseCode() >= 200 && conn.getResponseCode() <= 300) {
            rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
        } 
        else {
            rd = new BufferedReader(new InputStreamReader(conn.getErrorStream()));
        }
        
        StringBuilder sb = new StringBuilder();
        String line;
        while ((line = rd.readLine()) != null) {
            sb.append(line);
        }
        rd.close();
        conn.disconnect();
        
        System.out.println(sb.toString());
     }
}

 

#샘플코드2번 : 위 소스를  수정해서 만든코드입니다. xml파싱해서 리스트에 담기

 

package test;
 
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
 
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
 
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
 
public class TestRun {
 
    public static void main(String[] args) throws IOException, ParserConfigurationException, SAXException{
        String apiKey = "요기에 발급받은 api 키값이 들어가면 됩니다";
        String sc_year = "2021";
        String sc_month = "10";
        
        StringBuilder urlBuilder = new StringBuilder("http://apis.data.go.kr/B090041/openapi/service/SpcdeInfoService/getRestDeInfo"); /*URL*/
        urlBuilder.append("?" + URLEncoder.encode("serviceKey","UTF-8") + "=" + apiKey); /*Service Key*/
        urlBuilder.append("&" + URLEncoder.encode("solYear","UTF-8") + "=" + URLEncoder.encode(sc_year, "UTF-8")); /*연*/
        urlBuilder.append("&" + URLEncoder.encode("solMonth","UTF-8") + "=" + URLEncoder.encode(sc_month, "UTF-8")); /*월*/
        URL url = new URL(urlBuilder.toString());
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("GET");
        conn.setRequestProperty("Content-type", "application/json");
        
        //System.out.println("Response code: " + conn.getResponseCode());
        
        Document document = null;
        NodeList nList = null;
        
        if(conn.getResponseCode() >= 200 && conn.getResponseCode() <= 300) {
            DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
            DocumentBuilder db = dbf.newDocumentBuilder();
            document = db.parse(conn.getInputStream());
            document.getDocumentElement().normalize();
            nList = document.getElementsByTagName("item");
        } 
        
        conn.disconnect();
        
        ArrayList<String> holidayList = new ArrayList<String>();
        
        if(nList != null && nList.getLength() > 0) {
            //System.out.println(nList.getLength());
            for(int i=0; i<nList.getLength(); i++) {
                Node nNode = nList.item(i);
                //System.out.println(nNode.getNodeName());
                //System.out.println(nNode.getNodeType());
                if(nNode.getNodeType() == Node.ELEMENT_NODE) {
                    Element eElement = (Element) nNode;
                    String dateName = eElement.getElementsByTagName("dateName").item(0).getTextContent();
                    String locdate = eElement.getElementsByTagName("locdate").item(0).getTextContent();
                    String ymd = locdate.substring(0,4) + "-" + locdate.substring(4,6) + "-" + locdate.substring(6); 
                    System.out.println(dateName + " : " + ymd);
                    holidayList.add(ymd);
                }
            }
        }
        
        //return holidayList;
     }
}

 

 

#샘플코드2번 실행결과