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javascript - Koa - TypeError：中间件堆栈必须是一个数组

问题描述

我创建了路由器koa-router：

auth.js

const KoaRouter = require('koa-router');

const { signIn, signUp } = require('../controllers/auth');

const authRouter = new KoaRouter();

authRouter.post('/signin', signIn).post('/signup', signUp);

module.exports = authRouter;

我想在我的主应用程序中使用它作为中间件。在快递中，我可以写app.use(authRouter)。但是 Koa 说中间件应该是一个函数。我找到了一个解决方案并使用koa-mount包来解决这个问题app.use(mount(authRouter))。但现在它给出了这个错误：

if (!Array.isArray(middleware)) throw new TypeError('Middleware stack must be an array!') ^

TypeError：中间件堆栈必须是数组！

但是当我记录authRouter堆栈属性是路由数组时：

Router {
  opts: {},
  methods:
   [ 'HEAD', 'OPTIONS', 'GET', 'PUT', 'PATCH', 'POST', 'DELETE' ],
  params: {},
  stack:
   [ Layer {
       opts: [Object],
       name: null,
       methods: [Array],
       paramNames: [],
       stack: [Array],
       path: '/signin',
       regexp: /^\/signin[\/#\?]?$/i },
     Layer {
       opts: [Object],
       name: null,
       methods: [Array],
       paramNames: [],
       stack: [Array],
       path: '/signup',
       regexp: /^\/signup[\/#\?]?$/i } ] }

这是整个代码：

const Koa = require('koa');
const KoaRouter = require('koa-router');
const mount = require('koa-mount');
const bodyParser = require('koa-bodyparser');

const config = require('./config');
const authRoutes = require('./routes/auth');

const app = new Koa();
const router = new KoaRouter();

console.log(authRoutes);
app.use(bodyParser());
app.use(router.routes()).use(router.allowedMethods());
app.use(mount(authRoutes));

app.listen(config.PORT || 3001);

标签： javascriptnode.jsmiddlewarekoa

解决方案

我认为你只是错过了调用.routes()你的authRoutes对象。

const Koa = require('koa');
const KoaRouter = require('koa-router');
const mount = require('koa-mount');
const bodyParser = require('koa-bodyparser');

const config = require('./config');
const authRoutes = require('./routes/auth');

const app = new Koa();
const router = new KoaRouter();

console.log(authRoutes);
app.use(bodyParser());
app.use(router.routes()).use(router.allowedMethods());
// add this line 
app.use(authRoutes.routes()).use(authRoutes.allowedMethods());

app.listen(config.PORT || 3001);

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