在java中使用带有like运算符和参数的select查询

import java.sql.*;

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

        try {
            Connection connection = DriverManager.getConnection(url, username, password);
            String query = "SELECT * FROM users WHERE name LIKE ?";
            PreparedStatement statement = connection.prepareStatement(query);
            statement.setString(1, "%John%"); // 设置参数，%表示任意字符
            ResultSet resultSet = statement.executeQuery();

            while (resultSet.next()) {
                int id = resultSet.getInt("id");
                String name = resultSet.getString("name");
                // 其他字段...

                System.out.println("ID: " + id + ", Name: " + name);
            }

            resultSet.close();
            statement.close();
            connection.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}