import React from 'react';

class Toolbar extends React.Component {
  handleClick = () => {
    // 处理按钮点击事件的逻辑
    console.log('按钮被点击了');
  }

  render() {
    return (
      <div>
        <button onClick={this.handleClick}>按钮</button>
      </div>
    );
  }
}

export default Toolbar;

const express = require('express');
const app = express();

app.get('/toolbar', (req, res) => {
  // 处理工具条按钮的逻辑
  console.log('按钮被点击了');
  res.send('按钮被点击了');
});

app.listen(3000, () => {
  console.log('应用程序已启动，监听端口3000');
});