java获取mysql条数据类型

import java.sql.*;

public class JDBCDemo {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/mydatabase";
        String username = "root";
        String password = "password";

        try (Connection conn = DriverManager.getConnection(url, username, password)) {
            String sql = "SELECT id, name, age FROM users WHERE id = ?";
            try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
                pstmt.setInt(1, 1); // 假设要查询id为1的用户信息
                try (ResultSet rs = pstmt.executeQuery()) {
                    if (rs.next()) {
                        int id = rs.getInt("id");
                        String name = rs.getString("name");
                        int age = rs.getInt("age");
                        System.out.println("ID: " + id + ", Name: " + name + ", Age: " + age);
                    } else {
                        System.out.println("No data found.");
                    }
                }
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}