微信登录失败域名和后台

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

// 微信开放平台配置
const APP_ID = 'your_app_id';
const APP_SECRET = 'your_app_secret';
const REDIRECT_URI = 'http://your_domain.com/callback';

// 微信授权URL
app.get('/auth/wechat', (req, res) => {
  const scope = 'snsapi_userinfo';
  const url = `https://open.weixin.qq.com/connect/oauth2/authorize?appid=${APP_ID}&redirect_uri=${encodeURIComponent(REDIRECT_URI)}&response_type=code&scope=${scope}&state=STATE#wechat_redirect`;
  res.redirect(url);
});

// 微信回调处理
app.get('/callback', async (req, res) => {
  const { code } = req.query;
  try {
    const tokenResponse = await axios.get(`https://api.weixin.qq.com/sns/oauth2/access_token?appid=${APP_ID}&secret=${APP_SECRET}&code=${code}&grant_type=authorization_code`);
    const { access_token, openid } = tokenResponse.data;
    const userInfoResponse = await axios.get(`https://api.weixin.qq.com/sns/userinfo?access_token=${access_token}&openid=${openid}&lang=zh_CN`);
    const userInfo = userInfoResponse.data;
    res.send(`Hello, ${userInfo.nickname}!`);
  } catch (error) {
    console.error(error);
    res.status(500).send('Internal Server Error');
  }
});

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