怎么用jsp连接mysql数据库

<%@ page import="java.sql.*" %>
<%@ page import="javax.sql.*" %>

<%
    // 定义数据库连接信息
    String driver = "com.mysql.jdbc.Driver";
    String url = "jdbc:mysql://localhost:3306/your_database_name";
    String username = "your_username";
    String password = "your_password";

    Connection conn = null;
    try {
        // 加载数据库驱动程序
        Class.forName(driver);

        // 建立数据库连接
        conn = DriverManager.getConnection(url, username, password);

        // 进行数据库操作...

    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        // 关闭数据库连接
        if (conn != null) {
            try {
                conn.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
%>

<%
    // ...

    Statement stmt = null;
    ResultSet rs = null;
    try {
        stmt = conn.createStatement();

        // 查询数据
        String sql = "SELECT * FROM your_table_name";
        rs = stmt.executeQuery(sql);

        // 处理查询结果...
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        // 关闭结果集和语句对象
        if (rs != null) {
            try {
                rs.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        if (stmt != null) {
            try {
                stmt.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
%>