使用express (React)的用户的基本post请求

import React, { useState } from 'react';

function PostForm() {
  const [formData, setFormData] = useState({});

  const handleSubmit = async (e) => {
    e.preventDefault();
    try {
      const response = await fetch('/api/post', {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
        },
        body: JSON.stringify(formData),
      });
      // 处理响应
    } catch (error) {
      console.error(error);
    }
  };

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

  return (
    <form onSubmit={handleSubmit}>
      <input type="text" name="username" onChange={handleChange} />
      <input type="password" name="password" onChange={handleChange} />
      <button type="submit">Submit</button>
    </form>
  );
}

export default PostForm;

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

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

app.post('/api/post', (req, res) => {
  const { username, password } = req.body;
  // 处理POST请求的数据
  res.send('Post request received');
});

app.listen(3000, () => {
  console.log('Server is running on port 3000');
});