React-helmet metaTags在页面更改时消失

import React from 'react';
import { Helmet } from 'react-helmet';

function MyPage() {
  return (
    <div>
      <Helmet>
        <meta name="description" content="My page description" />
      </Helmet>
      {/* 页面内容 */}
    </div>
  );
}

import React from 'react';
import { Helmet } from 'react-helmet';

class MyPage extends React.Component {
  componentDidUpdate() {
    // 更新metaTags
    const metaTags = [
      { name: 'description', content: 'My updated page description' },
    ];
    const metaElements = metaTags.map((tag, index) => (
      <meta key={index} {...tag} />
    ));
    Helmet.renderStatic(); // 渲染metaTags
  }

  render() {
    return (
      <div>
        <Helmet>
          <meta name="description" content="My page description" />
        </Helmet>
        {/* 页面内容 */}
      </div>
    );
  }
}