java获取mysql连接

try {
    // 加载MySQL驱动程序
    Class.forName("com.mysql.cj.jdbc.Driver");
    // 获取数据库连接
    Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/mydatabase", "username", "password");
} catch (ClassNotFoundException e) {
    e.printStackTrace();
} catch (SQLException e) {
    e.printStackTrace();
}

Properties props = new Properties();
props.setProperty("user", "username");
props.setProperty("password", "password");
props.setProperty("connectTimeout", "5000"); // 设置连接超时时间为5秒
Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/mydatabase", props);

Connection conn = null;
try {
    conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/mydatabase", "username", "password");
    // 执行数据库操作
} catch (SQLException e) {
    e.printStackTrace();
} finally {
    if (conn != null) {
        try {
            conn.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}