// router/user.js
const {SuccessModel,ErrorModel} = require('../model/resModel')
const {login} = require('../controller/user')
const {set} = require('../db/redis')

const handelUserRouter = (req,res) => {
  const method = req.method       // GET POST

  // 登录(api/user/login)
  if(method === "GET" && req.path === "/api/user/login"){
   const {username,password} = req.query
   const result = login(username,password)
   return result.then(data=>{
     if(data.username){
      console.log('data ===>'+ data)
      // 设置session
      req.session.username = data.username
      req.session.realname = data.realname
      // 同步到redis中，将session放到redis中与sessionId关联起来
      set(req.sessionId,req.session)
      return new SuccessModel()
     }
     return new ErrorModel('登录失败')
   })
  }

  // 登录验证测试
  if(method === "GET" && req.path === '/api/user/login-test'){
    if(req.session.username){
      return Promise.resolve(
        new SuccessModel({
          session: req.session
        })
      ) 
    }
    return Promise.resolve(
      new ErrorModel('登录失败'))    
  }
}

module.exports = handelUserRouter

// controller/user.js

const {exec} = require('../db/mysql')

const login = (username,password) => {
  const sql = `select username,realname from users where username='${username}' and password='${password}'`
  return exec(sql).then(rows => {
    return rows[0] || {}
  })
}

module.exports = {
  login
}

使用redis之前可以获取到data，使用redis后就获取不到data了，找不到原因，请老师帮忙看一下问题出在哪里