jsp删除mysql语句

<%@ page import="java.sql.*" %>
<%
    String userId = request.getParameter("id");
    Connection conn = null;
    PreparedStatement pstmt = null;
    try {
        // 加载JDBC驱动
        Class.forName("com.mysql.jdbc.Driver");
        // 获取数据库连接
        conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/mydatabase", "username", "password");
        // 创建PreparedStatement
        String sql = "DELETE FROM users WHERE id = ?";
        pstmt = conn.prepareStatement(sql);
        pstmt.setString(1, userId);
        // 执行删除操作
        int rowsAffected = pstmt.executeUpdate();
        if (rowsAffected > 0) {
            out.println("用户删除成功！");
        } else {
            out.println("用户删除失败，可能用户不存在。");
        }
    } catch (ClassNotFoundException | SQLException e) {
        out.println("数据库操作异常：" + e.getMessage());
    } finally {
        // 关闭资源
        try {
            if (pstmt != null) pstmt.close();
            if (conn != null) conn.close();
        } catch (SQLException e) {
            out.println("关闭数据库连接异常：" + e.getMessage());
        }
    }
%>