尽管从res.data赋值，状态值仍为空

import React, { useState, useEffect } from 'react';
import axios from 'axios';

function MyComponent() {
  const [data, setData] = useState(null);

  useEffect(() => {
    async function fetchData() {
      try {
        const response = await axios.get('https://api.example.com/data');
        setData(response.data);
      } catch (error) {
        console.error("Error fetching data: ", error);
      }
    }

    fetchData();
  }, []);

  return (
    <div>
      {data ? <p>{JSON.stringify(data)}</p> : <p>Loading...</p>}
    </div>
  );
}

export default MyComponent;

import React, { useState, useEffect } from 'react';
import axios from 'axios';

function MyComponent() {
  const [data, setData] = useState(null);

  useEffect(() => {
    axios.get('https://api.example.com/data')
      .then(response => {
        setData(response.data);
      })
      .catch(error => {
        console.error("Error fetching data: ", error);
      });
  }, []);

  return (
    <div>
      {data ? <p>{JSON.stringify(data)}</p> : <p>Loading...</p>}
    </div>
  );
}

export default MyComponent;