question 1: why is the middleware in the koa2 framework written in the form of async, rarely in Synchronize mode (that is, without async)? For example, app.use(async (ctx, next) => { const start = new Date() await next() const ms = new Date() ...

https: github.com koajs comp. source link koa callback const fn = compose(this.middleware); fn(ctx).then(handleResponse).catch(onerror); fncomposectxnextundefined compose function compose (middleware) { .... return function (context, next)...

how can I access manhour without writing path parameters? in addition, I would like to ask, do not directly operate the database, only interface forwarding, koa2 can have the concept of model ? now I am using the chained router.get ( manhou...

For the project written by koa2, the koa-passport,koa-session, is used to verify whether or not to log in to the specified page. By default, the user information is saved in session when logging in, and the user information is deleted. If you do not log...

var jwt = require( jsonwebtoken ) module.exports = async function (ctx, next) { const token = ctx.request.body.token || ctx.query.token || ctx.request.headers[ x-access-token ] if(token) { jwt.verify(token, zhiyuJS , function(er...

what are the better recommended verification tools for koa projects? now I have seen several verification components such as node-validator,validate,koa-validate, which are either slightly complicated or do not support object and array verification. Plea...

1. I am a novice, read a lot of documents, and use koa2 + koa-generator + monogoDB to build a demo, to try to write some simple interfaces. but the question is, how to format the returns uniformly? Or how does my project directory need to be set ...

first of all, we need to build a koa2 environment, so I won t say much about it here. next you need to load koa-multer: npm install koa-multer-- save the specific code is as follows: first is the js section: const multer = require( koa-multer...

Let s briefly describe the project first spa application of version 6.x of view layer angualr.js angular calls the api API of node directly, and node invokes the service to add, delete, modify and query node version 8.11.x mainly uses koa2 frame...

I used until s promisify to change the verify in jwt into Synchronize s. When I called this function and passed in an expired token, he reported an error and the program stopped going! const util = require( util ); const verify = util.promisify(jwt...

currently want to use koa2 to build a middle-tier agent, tried: koa2-cors koa2-proxy-middleware koa-server-http-proxy koa-better-http-proxy install demo configuration, which doesn t work at all. The front end uses an axios req...

problem description needs the output result to be 1 blocking execution before output 3, waiting for 2 related codes Please paste the code text below (do not replace the code with pictures) const Koa = require("koa"); const app = ne...

I upload the avatar on the client side, and the picture is uploaded to the server and saved in a fixed folder. Now how do I read this picture on the client side? the running environment is the backend is node koa related codes exports.editcover = a...

I am doing token verification. Only after successful verification can I continue to pull data. But now I can pull data in the controller after successful verification, but I cannot return the error 404 to the client. here is the code: 1.jwt Code: co...

I am doing token verification. Only after successful verification can I continue to pull data. But now I can pull data in the controller after successful verification, but I cannot return the error 404 to the client. here is the code: 1.jwt Code: co...

problem description after the post request is sent by the current end, the database successfully writes the data, but the backend still reports an error of Error: connect ECONNREFUSED 127.0.0.1, and returns 500. the environmental background of the p...

I didn t load the koa-static-cache middleware, so the rendered image won t come out. May I ask why there is a static resource server? if not, there is a problem with the picture path there is also the following picture. Why does this file cache have...

for example: I use Github s OAuth, when the browser requests, I wanted to send an asynchronous request for authentication to github, but the browser didn t wait for me to get the information from github and response it to the browser. browser rep...