자바 서버로부터 날짜 읽어서 사용

package navermap;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;

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

public class NowDateFromServer {
	
	public final static String DUE_STR="20230204";
	public final static String USER_ID="ksd";
	public final static String GET_SET_DATE_URL="http://localhost/navermap/getSettingDate.php";
	public final static String GET_DATE_URL="http://localhost/navermap/getNowDate.php";
	public final static String LOG_URL="http://localhost/navermap/insertLog.php";
	
	public static boolean isBefore() throws Exception {
		boolean rst=false;
		//String nowStr="20230105";
		
		URL url = new URL(GET_DATE_URL); 
		HttpURLConnection con = (HttpURLConnection) url.openConnection(); 
		con.setRequestMethod("GET"); 
		// optional default is GET 
		con.setRequestProperty("User-Agent",  "Mozilla/5.0"); 
		// add request header 
		int responseCode = con.getResponseCode(); 
		System.out.println("HTTP 응답 코드 : " + responseCode);
		
		BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream(),"UTF-8")); 
		String inputLine; 
		StringBuffer response = new StringBuffer(); 
		while ((inputLine = in.readLine()) != null) { 
			response.append(inputLine); 
		} in.close(); // print result 
		System.out.println("HTTP body : " + response.toString());
		
		JSONParser jsonParser = new JSONParser();
        String jsonInfo=response.toString();
        System.out.println("jsonInfo="+jsonInfo);

        JSONObject jsonObject = (JSONObject) jsonParser.parse(jsonInfo);
        System.out.println("jsonObject="+jsonObject);
    
        String nowStr = (String) jsonObject.get("nowDate");
        System.out.println("nowStr="+nowStr);
		
		//String dueStr="20230204";
		DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMdd");
		LocalDate nowDate=LocalDate.parse(nowStr, formatter);
		LocalDate dueDate=LocalDate.parse(DUE_STR, formatter);
		System.out.println(nowDate);
		System.out.println(dueDate);
		
		rst=nowDate.isBefore(dueDate);
		//System.out.println(rst);
		return rst;
	}
	
	public static boolean isBeforeByUserId(String user_id) throws Exception {
		boolean rst=false;
		//String nowStr="20230105";
		String settingUrl = GET_SET_DATE_URL+"?user_id="+user_id;
		URL url = new URL(settingUrl); 
		HttpURLConnection con = (HttpURLConnection) url.openConnection(); 
		con.setRequestMethod("GET"); 
		// optional default is GET 
		con.setRequestProperty("User-Agent",  "Mozilla/5.0"); 
		// add request header 
		int responseCode = con.getResponseCode(); 
		System.out.println("HTTP 응답 코드 : " + responseCode);
		
		BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream(),"UTF-8")); 
		String inputLine; 
		StringBuffer response = new StringBuffer(); 
		while ((inputLine = in.readLine()) != null) { 
			response.append(inputLine); 
		} in.close(); // print result 
		System.out.println("HTTP body : " + response.toString());
		
		JSONParser jsonParser = new JSONParser();
		String jsonInfo=response.toString();
		System.out.println("jsonInfo="+jsonInfo);
		
		JSONObject jsonObject = (JSONObject) jsonParser.parse(jsonInfo);
		System.out.println("jsonObject="+jsonObject);
		
		String nowStr = (String) jsonObject.get("nowDate");
		System.out.println("nowStr="+nowStr);
		
		//String dueStr="20230204";
		DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMdd");
		LocalDate nowDate=LocalDate.parse(nowStr, formatter);
		LocalDate dueDate=LocalDate.parse(DUE_STR, formatter);
		System.out.println(nowDate);
		System.out.println(dueDate);
		
		rst=nowDate.isBefore(dueDate);
		//System.out.println(rst);
		return rst;
	}
	
	public static void log() throws Exception {
		String logUrl=LOG_URL+"?user_id="+USER_ID;
		System.out.println("logUrl="+logUrl);
		URL url = new URL(logUrl);
		HttpURLConnection con = (HttpURLConnection) url.openConnection();
		con.setRequestMethod("GET"); 
		con.setRequestProperty("User-Agent", "Mozilla/5.0"); 
		int responseCode = con.getResponseCode(); 
		System.out.println("HTTP 응답 코드 : " + responseCode);
		
	}

	public static void main(String[] args) throws Exception {

		boolean b = NowDateFromServer.isBefore();
		boolean b2 = NowDateFromServer.isBeforeByUserId("aa");
		System.out.println("isBefore="+b);
		
		System.out.println("isBeforeByUserId="+b2);
		log();
		
	}

}