Project.The_SEED/DB/DBUpdate.java

package org.poopki.duckdns.user_db.DB;

import org.poopki.duckdns.user_db.UserInfoArray;

import java.sql.*;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.UUID;

public class DBUpdate {
    private static final String DB_DRIVER_CLASS = "org.mariadb.jdbc.Driver";
    private static final String DB_URL = "jdbc:mariadb://poopki.duckdns.org:3307/mc_dev";
    private static final String DB_USERNAME = "mc_dev";
    private static final String DB_PASSWORD = "!Rkdalsrn1027";
    private static UserInfoArray m_InfoArrayInstance;

    public DBUpdate(UserInfoArray m_UIA){
        m_InfoArrayInstance = m_UIA;
    }

    public static void UpdateDB(){
        Connection conn = null;
        Statement stmt = null;

        try {
            Class.forName("org.mariadb.jdbc.Driver");

            conn = DriverManager.getConnection(DB_URL, DB_USERNAME, DB_PASSWORD);
            System.out.println("Connection success");
            stmt = conn.createStatement();
            StringBuilder sb = new StringBuilder();
            String sql = sb.append("create table if not exists UserInfo(")
                    .append("UUID varchar(36)")
/*                    .append("Nation int,")
                    .append("Occupation TINYINT,")
                    .append("Squad int,")
                    .append("Farm int,")
                    .append("Account int,")*/
                    .append(")").toString();
                    stmt.execute(sql);

            for (UUID key : m_InfoArrayInstance.m_UserInfoArray.keySet()) {
                //sql = sb.append("insert into UserInfo values('"+key+"',"+0+","+0+","+0+","+0+","+0+")").toString();
                sql = sb.append("insert into UserInfo (UUID) value ('"+key.toString()+ "')").toString();
                stmt.execute(sql);
            }
        }
        catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
        catch (SQLException e) {
            // TODO Auto-generated catch block
            System.err.println("에러 내용 :" + e.getMessage());
            System.out.println("DB Connection fail");
        }


    }

}