如何在组件创建时只调用一次HTTP

import React, { Component } from 'react';
import axios from 'axios';

class MyComponent extends Component {
  constructor(props) {
    super(props);
    this.state = {
      data: null,
      isLoading: true
    };
  }

  async componentDidMount() {
    try {
      const response = await axios.get('https://api.example.com/data');
      this.setState({ data: response.data, isLoading: false });
    } catch (error) {
      console.error(error);
    }
  }

  componentWillUnmount() {
    // 取消请求的逻辑（使用axios库的示例）
    // axios.cancelToken.source().cancel();
  }

  render() {
    const { data, isLoading } = this.state;

    if (isLoading) {
      return <div>Loading...</div>;
    }

    return (
      <div>
        {/* 使用获取到的数据进行渲染 */}
      </div>
    );
  }
}

export default MyComponent;