如何在react中调用handleSubmit上的组件

class ParentComponent extends React.Component {
  handleSubmit = (data) => {
    // 处理提交的数据
    console.log(data);
  }

  render() {
    return (
      <ChildComponent onSubmit={this.handleSubmit} />
    );
  }
}

class ChildComponent extends React.Component {
  handleClick = () => {
    const data = '提交的数据';
    this.props.onSubmit(data);
  }

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