mysql url配置文件

jdbc.url=jdbc:mysql://localhost:3306/mydatabase
jdbc.username=myuser
jdbc.password=mypassword

import java.io.FileInputStream;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Properties;

public class MySQLConnector {
    public static void main(String[] args) {
        Properties props = new Properties();
        try (FileInputStream fis = new FileInputStream("db.properties")) {
            props.load(fis);
        } catch (IOException e) {
            e.printStackTrace();
            return;
        }

        String url = props.getProperty("jdbc.url");
        String username = props.getProperty("jdbc.username");
        String password = props.getProperty("jdbc.password");

        try (Connection conn = DriverManager.getConnection(url, username, password)) {
            System.out.println("Connected to MySQL database!");
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}