帮我写一个jdbc工具类，我的数据库是mysql

以下是一个简单的 JDBC 工具类，支持 MySQL 数据库连接：

import java.sql.*;

public class JdbcUtils {

    /**
     * 获取 MySQL 数据库连接
     * 
     * @return Connection
     */
    public static Connection getConnection() {
        Connection conn = null;

        String url = "jdbc:mysql://localhost:3306/test?useSSL=false";
        String user = "root";
        String password = "root";

        try {
            Class.forName("com.mysql.jdbc.Driver");
            conn = DriverManager.getConnection(url, user, password);
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }

        return conn;
    }

    /**
     * 关闭数据库连接
     * 
     * @param conn
     * @param stmt
     * @param rs
     */
    public static void close(Connection conn, Statement stmt, ResultSet rs) {
        try {
            if (rs != null) {
                rs.close();
            }
            
            if (stmt != null) {
                stmt.close();
            }

            if (conn != null) {
                conn.close();
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

使用方法示例：

public class Test {
    
    public static void main(String[] args) {
        Connection conn = null;
        PreparedStatement pstmt = null;
        ResultSet rs = null;

        try {
            // 获取数据库连接
            conn = JdbcUtils.getConnection();

            // 执行查询
            String sql = "SELECT * FROM student";
            pstmt = conn.prepareStatement(sql);
            rs = pstmt.executeQuery();
            while (rs.next()) {
                System.out.println(rs.getInt("id") + " " + rs.getString("name"));
            }

        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            // 关闭数据库连接
            JdbcUtils.close(conn, pstmt, rs);
        }
    }
}