使用React-Hooks/Axios获取数据并在表中显示

Question

我有此反应设置，我定义了一个称为ApiTable的钩子，并具有renderTable方法。我要做的是从API端点获取数据，https://jsonplaceholder.typicode.com/users并将其返回具有适当类别的表格。

现在，它正在将所有列划过左侧，如下所示。当前，数据尚未显示，并将其压实到左侧。我很确定我的表数据设置错误。

另外，我不确定Axios请求是否应该在使用效果内部。

https://imgur.com/a/Up4a56v

const ApiTable = () => {
  const url = 'https://jsonplaceholder.typicode.com/users';
  const [data, setData] = useState([]);
  useEffect(() => {
    setData([data]);
    axios.get(url)
    .then(json => console.log(json))
  }, []);
  const renderTable = () => {
      return data.map((user) => {
        const { name, email, address, company } = user;
        return (
          <div>
           <thead>
               <tr>
                 <th>Name</th>
                 <th>Email</th>
                 <th>Address</th>
                 <th>Company</th>
               </tr>
          </thead>
          <tbody>
          <tr>
              <td>name</td>
              <td>email</td>
              <td>address</td>
              <td>company</td>
          </tr>
          </tbody>
          </div>
        )
      })
    }
      return (
        <div>
            <h1 id='title'>API Table</h1>
            <Table id='users'>
              {renderTable()}
            </Table>
         </div>
      )
};

Answer 1

您正在正确获取数据，但将数据设置为错误。

还要迭代data数组时，每次都在打印table head，而data数组address和company是对象，因此您无法指向对象。

。

您需要这样做，

const App = () => {
  const url = 'https://jsonplaceholder.typicode.com/users'
  const [data, setData] = useState([])
  useEffect(() => {
    axios.get(url).then(json => setData(json.data))
  }, [])
  const renderTable = () => {
    return data.map(user => {
      return (
        <tr>
          <td>{user.name}</td>
          <td>{user.email}</td>
          <td>{user.address.street}</td> //only street name shown, if you need to show complete address then you need to iterate over `user.address` object
          <td>{user.company.name}</td> //only company name shown, if you need to show complete company name then you need to iterate over `user.name` object
        </tr>
      )
    })
  }
  return (
    <div>
      <h1 id="title">API Table</h1>
      <table id="users"> //Your Table in post changed to table to make it work
        <thead>
          <tr>
            <th>Name</th>
            <th>Email</th>
            <th>Address</th>
            <th>Company</th>
          </tr>
        </thead>
        <tbody>{renderTable()}</tbody>
      </table>
    </div>
  )
}

demo