java mysql配置文件

db.url=jdbc:mysql://localhost:3306/mydatabase
db.username=root
db.password=123456

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 {
    private static final String DB_URL = "db.url";
    private static final String DB_USERNAME = "db.username";
    private static final String DB_PASSWORD = "db.password";

    public static Connection getConnection() throws IOException, SQLException {
        Properties props = new Properties();
        try (FileInputStream fis = new FileInputStream("path/to/db.properties")) {
            props.load(fis);
        }

        String url = props.getProperty(DB_URL);
        String username = props.getProperty(DB_USERNAME);
        String password = props.getProperty(DB_PASSWORD);

        return DriverManager.getConnection(url, username, password);
    }

    public static void main(String[] args) {
        try (Connection conn = getConnection()) {
            System.out.println("Connected to MySQL database!");
        } catch (IOException | SQLException e) {
            e.printStackTrace();
        }
    }
}