jsp连接sql数据库

<%@ page import="java.sql.*" %>
<%
    Connection conn = null;
    Statement stmt = null;
    ResultSet rs = null;
    try {
        // 加载JDBC驱动程序
        Class.forName("com.mysql.jdbc.Driver");
        // 获取数据库连接
        String url = "jdbc:mysql://localhost:3306/mydatabase";
        String user = "username";
        String password = "password";
        conn = DriverManager.getConnection(url, user, password);
        // 创建Statement对象
        stmt = conn.createStatement();
        // 执行查询操作
        String sql = "SELECT * FROM users";
        rs = stmt.executeQuery(sql);
        // 处理查询结果
        while (rs.next()) {
            String username = rs.getString("username");
            String email = rs.getString("email");
            out.println("Username: " + username + ", Email: " + email + "<br>");
        }
    } catch (ClassNotFoundException | SQLException e) {
        out.println("Error: " + e.getMessage());
    } finally {
        // 关闭资源
        try {
            if (rs != null) rs.close();
            if (stmt != null) stmt.close();
            if (conn != null) conn.close();
        } catch (SQLException e) {
            out.println("Error closing resources: " + e.getMessage());
        }
    }
%>