连接mysql数据库路径

$host = 'localhost'; // MySQL服务器主机地址
$port = '3306'; // MySQL服务器端口号
$dbname = 'mydatabase'; // 数据库名称
$username = 'myuser'; // 用户名
$password = 'mypassword'; // 密码

$dsn = "mysql:host=$host;port=$port;dbname=$dbname;charset=utf8mb4";
$pdo = new PDO($dsn, $username, $password);

String url = "jdbc:mysql://localhost:3306/mydatabase?useUnicode=true&characterEncoding=utf8&serverTimezone=UTC";
String username = "myuser";
String password = "mypassword";
Connection connection = DriverManager.getConnection(url, username, password);

import pymysql

host = 'localhost'  # MySQL服务器主机地址
port = 3306  # MySQL服务器端口号
user = 'myuser'  # 用户名
password = 'mypassword'  # 密码
db = 'mydatabase'  # 数据库名称

conn = pymysql.connect(host=host, port=port, user=user, password=password, db=db, charset='utf8mb4')