如何在React中使用JSON数据

{
  "users": [
    { "id": 1, "name": "Alice" },
    { "id": 2, "name": "Bob" }
  ]
}

import React, { useEffect, useState } from 'react';
import data from './data.json';

function UserList() {
  const [users, setUsers] = useState([]);

  useEffect(() => {
    setUsers(data.users);
  }, []);

  return (
    <div>
      <h1>User List</h1>
      <ul>
        {users.map(user => (
          <li key={user.id}>{user.name}</li>
        ))}
      </ul>
    </div>
  );
}

export default UserList;

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

function UserList() {
  const [users, setUsers] = useState([]);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState(null);

  useEffect(() => {
    fetch('/api/users')
      .then(response => {
        if (!response.ok) {
          throw new Error('Network response was not ok');
        }
        return response.json();
      })
      .then(data => {
        setUsers(data.users);
        setLoading(false);
      })
      .catch(error => {
        setError(error);
        setLoading(false);
      });
  }, []);

  if (loading) return <div>Loading...</div>;
  if (error) return <div>Error: {error.message}</div>;

  return (
    <div>
      <h1>User List</h1>
      <ul>
        {users.map(user => (
          <li key={user.id}>{user.name}</li>
        ))}
      </ul>
    </div>
  );
}

export default UserList;

.catch(error => {
  console.error('Error fetching data:', error);
  setError(error);
  setLoading(false);
});

.then(response => {
  if (!response.ok) {
    throw new Error('Network response was not ok');
  }
  return response.json();
})
.then(data => {
  if (!data.users || !Array.isArray(data.users)) {
    throw new Error('Invalid data format');
  }
  setUsers(data.users);
  setLoading(false);
})

.then(data => {
  setUsers(data.users);
  setLoading(false);
})