在MERN堆栈中存储base64格式的图像

const express = require('express');
const mongoose = require('mongoose');
const app = express();

// 连接到MongoDB
mongoose.connect('mongodb://localhost:27017/mydatabase', { useNewUrlParser: true, useUnifiedTopology: true });

// 定义Schema和Model
const imageSchema = new mongoose.Schema({
  name: String,
  data: String
});

const Image = mongoose.model('Image', imageSchema);

app.use(express.json());

app.post('/upload', async (req, res) => {
  const { name, data } = req.body;
  const image = new Image({ name, data });
  await image.save();
  res.send('Image uploaded successfully');
});

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

import React, { useState } from 'react';
import axios from 'axios';

function UploadImage() {
  const [name, setName] = useState('');
  const [data, setData] = useState('');

  const handleSubmit = async (e) => {
    e.preventDefault();
    await axios.post('http://localhost:3000/upload', { name, data });
    alert('Image uploaded successfully');
  };

  return (
    <form onSubmit={handleSubmit}>
      <input type="text" placeholder="Image name" value={name} onChange={(e) => setName(e.target.value)} />
      <textarea placeholder="Base64 encoded image data" value={data} onChange={(e) => setData(e.target.value)} />
      <button type="submit">Upload</button>
    </form>
  );
}

export default UploadImage;