https://seoft.tistory.com/23?category=1066265

Spring Gradle bootRun시 main으로 인자 전달 및 config 파일에 반영.kt

package kr.co.seoft.seoft_iot_server;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

import java.util.Properties;

@SpringBootApplication
public class SeoftIotServerApplication {

    static Logger logger = LoggerFactory.getLogger("SeoftIotServerApplication");

    static String EXCEPTION_MESSAGE = "\n>>> Input wrong arguments, Please run like this command\n>>> gradlew bootRun --args'port=3000,password=pwd'";

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

        int port = 3000;
        String password = "default";

        if (args.length == 0) logger.info("###### Run using default value ######");
        else if (args.length == 1) {
            logger.info("###### Run using user arguments ######");
            port = parsePort(args[0]);
            password = parsePassword(args[0]);
        } else
            throw new Exception(EXCEPTION_MESSAGE);


        SpringApplication application = new SpringApplication(SeoftIotServerApplication.class);

        Properties properties = new Properties();
        properties.put("server.port", port);
        properties.put("server.password", password);

        application.setDefaultProperties(properties);

        application.run(args);


        logger.info("");
        logger.info("");
        logger.info("###############################################################");
        logger.info("##  Swagger UI page : http://127.0.0.1:" + port + "/swagger-ui.html");
        logger.info("##  port : " + port + "   password : " + password);
        logger.info("###############################################################");

    }


    private static int parsePort(String args) throws Exception {
        try {
            String[] params = args.split(",");
            if (params[0].contains("port")) return Integer.parseInt(params[0].split("=")[1]);
            else if (params[1].contains("port")) return Integer.parseInt(params[1].split("=")[1]);
            else throw new Exception();
        } catch (Exception e) {
            throw new Exception(EXCEPTION_MESSAGE);
        }
    }


    private static String parsePassword(String args) throws Exception {
        try {
            String[] params = args.split(",");
            if (params[0].contains("password")) return params[0].split("=")[1];
            else if (params[1].contains("password")) return params[1].split("=")[1];
            else throw new Exception();
        } catch (Exception e) {
            throw new Exception(EXCEPTION_MESSAGE);
        }
    }

}