SEVERE: SEVERE com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException:你在null<br>语法中有一个错误；

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Types;

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

        try (Connection connection = DriverManager.getConnection(url, user, password)) {
            String sql = "INSERT INTO table_name (column1, column2) VALUES (?, ?)";
            try (PreparedStatement pstmt = connection.prepareStatement(sql)) {
                pstmt.setNull(1, Types.INTEGER); // 设置第一个参数为NULL
                pstmt.setString(2, "value");
                pstmt.executeUpdate();
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}