我将应用拆分为子应用，所有子应用都安装在app.js上
//app.js
const express = require('express');
const app = express();
const auth = require('./api/auth') //sub-app auth.js;
var tokenid = '';
app.use('/auth' , auth ,(req , res ,next)=>{
//I would like to receive the tokenid from auth.js and use it in
//subsequent calls.
})
app.listen(8080);
module.exports = app;
这是我的auth.js
//auth.js //In api directory
const express = require('express')
const router = express.Router()
var Tokenid = '';
router.get('/' , (req , res ,next)=>{
//I made request to external api and got the Tokenid successfully.
//How can i send this Tokenid to app.js to use it in
//further calls from app.js
})
module.exports = router
我需要在app.js中使用Tokenid，以便可以在其他子应用程序对外部api的进一步调用中使用它，是否有更好的方法做到这一点，请建议我！
谢谢。
编辑 谢谢@estus 完整的代码
//auth.js //In api directory
const express = require('express')
const router = express.Router()
var Tokenid = '';
router.get('/' , (req , res ,next)=>{
//I made request to external api and got the Tokenid successfully.
req.app.locals.tokenid = ExternalApiTokenid
//To use it in other routes : app.locals.tokenid
})
module.exports = router