获取嵌套JSON数据并使用React呈现它们的正确方法

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

const NestedDataComponent = () => {
  const [data, setData] = useState(null);

  useEffect(() => {
    // 假设这是从API获取的JSON数据
    const fetchData = async () => {
      try {
        const response = await fetch('https://api.example.com/data');
        const jsonData = await response.json();
        setData(jsonData);
      } catch (error) {
        console.error('Error fetching data:', error);
      }
    };

    fetchData();
  }, []);

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

  // 递归函数来渲染嵌套数据
  const renderNestedData = (item) => {
    if (Array.isArray(item)) {
      return (
        <ul>
          {item.map((subItem, index) => (
            <li key={index}>{renderNestedData(subItem)}</li>
          ))}
        </ul>
      );
    } else if (typeof item === 'object') {
      return (
        <ul>
          {Object.entries(item).map(([key, value], index) => (
            <li key={index}>
              {key}: {renderNestedData(value)}
            </li>
          ))}
        </ul>
      );
    } else {
      return item;
    }
  };

  return (
    <div>
      <h1>Nested JSON Data</h1>
      {renderNestedData(data)}
    </div>
  );
};

export default NestedDataComponent;