微信小程序后端搭建

// Node.js Express 用户登录接口示例
const express = require('express');
const router = express.Router();

router.post('/api/login', async (req, res) => {
    const { code } = req.body;
    
    try {
        // 微信登录凭证校验
        const result = await wxapi.code2Session(code);
        
        // 生成JWT Token
        const token = jwt.sign({ 
            openid: result.openid 
        }, process.env.JWT_SECRET);
        
        res.json({
            success: true,
            token: token,
            userInfo: result
        });
    } catch (error) {
        res.status(500).json({
            success: false,
            message: error.message
        });
    }
});