express | 易学教程

Magento WeChat Login Extension V3.0, Support Magento 1.9.X

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> The WeChat Express Login module enable login in magento with WeChat profile credentials by scaning QR code. ABOUT MAGENTO WECHAT LOGIN EXTENSION WeChat Login module enable login in magento with WeChat profile credentials by scaning QR code. In this way user dont need to signup every time to make a purchase he can just use WeChat credential to login in to store. DOWNLOAD Magento WeChat Login Extension ABOUT ALIPAYMATE Alipaymate are a team of Certified Alipay & WeChat Open Platform Developers, specialise in payment and express login solutions, Including

can't create a websocket sever correctly by express-ws middleware

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问题 I'm writing a websocket server using node.js and express, and I use the express-ws middleware to help me. But the client can't connect the server.Below is my code. app.js: var app = express(); var expressWs = require("express-ws")(app); ... var webso = require("./routes/ws"); app.use("/chat",webso); routes/ws.js: var express = require('express'); var router = express.Router(); router.ws("/",function(ws,req){ console.log("socket from client") ws.on('message',function(msg){ ws.send('back from

can't create a websocket sever correctly by express-ws middleware

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Socket.io emit button press to all clients

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问题 I am having some trouble sending a button state to all clients connected to my server. I am trying to turn on a light from a raspberry pi hosted server using express and socket.io. I first click the button from the client and it will send the state of the button to my server which then emits it to all clients which clicks the button on all clients page but then button then gets stuck in an endless loop and continues to click. Is the process that I am doing correct? I can find lots of examples

Axios wait on endpoint promise before returning data

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问题 I have an express endpoint that I call that has a function with a promise inside: Express Server: // endpoint app.get('/test', function (req, res) { res.setHeader('Content-Type', 'application/json') let y = 1 let x = 1 let bar = foo(x, y) res.json({a: bar}) } const foo = (x, y) => { // The promise sue.young(y, function(error, output) { // do stuff with x and output // console.log(output.result) // expected data in console // I need to return "output.result" }) } View: let axiosClient = axios

Node js Keeps redirecting - Middleware

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问题 I am trying to write a middleware using node js and express. If user is not authenticated it will redirect him to login page. That's working, but once redirected to login page, it keeps redirecting to login page again and again. app.get('/profile',function(req,res){ if (isAuthenticated()) { res.sendFile(path.join(__dirname+'/site/profile.html')); }else{ console.log('not authenticated user at profile'); res.redirect('/login'); } }); For login app.get('/login',function(req,res){ if

Express logging with storing the request information

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问题 Background Yes, there are a lot of different Node.js logging library winston, bunyan and console.log. It's easy to log down the information of the specific request when it has called and when and what information would be in response. The problem The problem begins with the sub function calls. When under one request your calling multiple functions which also uses the same logging, how would you pass the request meta - data to these log calls (function parameters seems to be one possible way

How to connect from angular to express server running on the same machine?

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问题 I am very new to express (and backend), and I am learning. So I mounted an express server on my machine by running express and npm install , and then overwriting the app.js with a simple code that serves something on /test var express = require('express') var app = express() app.all('/*', function(req, res, next) { res.header('Access-Control-Allow-Origin', '*'); res.header('Access-Control-Allow-Headers', 'Content-Type,X-Requested-With'); next(); }); app.get('/test', function (req, res) { res

Node js export generated json as file

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问题 My node server is generating a json object/array. I need to send it to the user, but not to display on the browser, but as a file. How do I do it? I dont think writing it to a file and then using res.sendFile() would be a right thing to do. 回答1: You just need to add header Content-Type as something that browser won't use to display it directly, then content would be downloaded as attachment. If you want to name the download file then you'll have to use header Content-Disposition . JSON object

Express + Multer without redirect

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问题 I wrote a code that upload a file to server. But, just after the upload finish the system redirect me to the upload route. How can I upload a file and stay in the first page? For example: app.post('/upload',function(req,res){ upload(req,res,function(err) { if(err) { return res.end("Error uploading file."); } res.end("File is uploaded"); }); }); When the upload finish, I am redirected to localhost:3000/upload. I don't want it. I want to stay in localhost:3000 and in my current session. Thanks