在哪填写微信的域名

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

app.use(express.json());

const token = 'your_token_here';

app.post('/wechat', (req, res) => {
  const signature = req.header('X-Hub-Signature');
  const timestamp = req.header('X-Hub-Timestamp');
  const nonce = req.header('X-Hub-Nonce');
  const echostr = req.query.echostr;

  const arr = [token, timestamp, nonce].sort().join('');
  const sha1 = crypto.createHash('sha1');
  sha1.update(arr);
  const result = sha1.digest('hex');

  if (result === signature) {
    res.send(echostr);
  } else {
    res.status(403).send('Forbidden');
  }
});

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