如何将表单数据从React发送到Node JS后端服务器

import React, { useState } from 'react';

const FormComponent = () => {
  const [formData, setFormData] = useState({
    name: '',
    email: ''
  });

  const handleChange = (e) => {
    setFormData({ ...formData, [e.target.name]: e.target.value });
  };

  const handleSubmit = (e) => {
    e.preventDefault();

    fetch('/api/submitFormData', {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json'
      },
      body: JSON.stringify(formData)
    })
      .then(response => response.json())
      .then(data => {
        // 处理响应数据
      })
      .catch(error => {
        // 处理错误
      });
  };

  return (
    <form onSubmit={handleSubmit}>
      <input
        type="text"
        name="name"
        value={formData.name}
        onChange={handleChange}
      />
      <input
        type="email"
        name="email"
        value={formData.email}
        onChange={handleChange}
      />
      <button type="submit">提交</button>
    </form>
  );
};

export default FormComponent;

const express = require('express');
const bodyParser = require('body-parser');

const app = express();
app.use(bodyParser.json());

app.post('/api/submitFormData', (req, res) => {
  const formData = req.body;

  // 处理表单数据，执行相应的业务逻辑

  res.json({ message: '表单数据已收到' });
});

app.listen(3000, () => {
  console.log('服务器已启动');
});