jsp连接mysql连不上

<%@ page import="java.sql.*" %>
<%
    try {
        // 加载MySQL JDBC驱动
        Class.forName("com.mysql.cj.jdbc.Driver");

        // 数据库连接URL
        String url = "jdbc:mysql://localhost:3306/your_database_name?useSSL=false&serverTimezone=UTC";
        String user = "your_username";
        String password = "your_password";

        // 建立连接
        Connection conn = DriverManager.getConnection(url, user, password);

        // 创建Statement对象
        Statement stmt = conn.createStatement();

        // 执行查询
        String sql = "SELECT * FROM your_table_name";
        ResultSet rs = stmt.executeQuery(sql);

        // 处理结果集
        while (rs.next()) {
            // 处理每一行数据
            out.println(rs.getString("column_name"));
        }

        // 关闭资源
        rs.close();
        stmt.close();
        conn.close();
    } catch (ClassNotFoundException e) {
        out.println("MySQL JDBC Driver not found!");
    } catch (SQLException e) {
        out.println("SQL Error: " + e.getMessage());
    }
%>