如何在JOptionPane上添加文本区域

import javax.swing.*;
import java.awt.*;

public class TextAreaInJOptionPane {
    public static void main(String[] args) {
        JTextArea textArea = new JTextArea(5, 20);
        JPanel panel = new JPanel();
        panel.setLayout(new BorderLayout());
        panel.add(new JLabel("请输入文本："), BorderLayout.NORTH);
        panel.add(new JScrollPane(textArea), BorderLayout.CENTER);

        JOptionPane.showMessageDialog(null, panel, "文本输入框", JOptionPane.PLAIN_MESSAGE);

        String inputText = textArea.getText();
        System.out.println("输入的文本：" + inputText);
    }
}