必需的属性和类型电子邮件窗口不起作用。ReactJS和Materia UI

import React, { useState } from 'react';
import { TextField, Button } from '@material-ui/core';

const EmailWindow = () => {
  const [recipient, setRecipient] = useState('');
  const [subject, setSubject] = useState('');
  const [body, setBody] = useState('');

  const handleRecipientChange = (event) => {
    setRecipient(event.target.value);
  };

  const handleSubjectChange = (event) => {
    setSubject(event.target.value);
  };

  const handleBodyChange = (event) => {
    setBody(event.target.value);
  };

  const handleSend = () => {
    // 处理发送逻辑
    console.log('发送邮件:', recipient, subject, body);
  };

  return (
    <div>
      <TextField
        label="收件人"
        value={recipient}
        onChange={handleRecipientChange}
      />
      <TextField
        label="主题"
        value={subject}
        onChange={handleSubjectChange}
      />
      <TextField
        label="正文"
        value={body}
        onChange={handleBodyChange}
        multiline
        rows={4}
      />
      <Button variant="contained" color="primary" onClick={handleSend}>
        发送
      </Button>
    </div>
  );
};

export default EmailWindow;