网页授权回调域名配置

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

// 配置回调域名
const callbackDomain = 'https://example.com/callback';

// OAuth 2.0授权URL
const authUrl = 'https://auth.example.com/oauth/authorize';

// 处理授权回调
app.get('/callback', async (req, res) => {
  const { code } = req.query;
  try {
    const tokenResponse = await axios.post('https://auth.example.com/oauth/token', {
      grant_type: 'authorization_code',
      code,
      redirect_uri: callbackDomain,
      client_id: 'your_client_id',
      client_secret: 'your_client_secret'
    });
    const accessToken = tokenResponse.data.access_token;
    // 使用access_token进行后续操作
    res.send(`Access Token: ${accessToken}`);
  } catch (error) {
    res.status(500).send('Failed to get access token');
  }
});

// 重定向到授权页面
app.get('/login', (req, res) => {
  const scope = 'user_info';
  const state = 'random_state_string';
  const redirectUri = encodeURIComponent(callbackDomain);
  const authUrlWithParams = `${authUrl}?response_type=code&client_id=your_client_id&redirect_uri=${redirectUri}&scope=${encodeURIComponent(scope)}&state=${state}`;
  res.redirect(authUrlWithParams);
});

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