node js express rest api example

1. First of all, you must install Node. JSWindows CMD enters the following command in Turn:CD C:\Program files\nodejs\NPM Install-g ExpressNPM install-g Express-generator2. Create an example ProjectWindows CMD enters the following command in Turn:CD C:\Program Files\nodejs\node_globalExpress-e MICROBLOG//I.E. ejs,-j (I.E. Jade)CD microblogNPM Install 3. Modify th

. pipe (parser ). pipe (transformer) // process the data transmitted from the previous stream. pipe (es. map (function (data, callback) {up Load (data, function (err) {callback (err) ;}) // listens to the end event of the previous stream. pipe (es. wait (function (err, body) {process. stdout. write ('done! ');})); More Methods You can refer to the https://github.com/jeresig/node-stream-playground, go to the sample site and click add stream to see the

Download two module packages firstSession Module Package: Used to keep the login status or to maintain session state, etc.Install express-session--save-devCookie Module Package: Used to parse cookies.Install Cookie-parser--save-devThis is then configured in App.js (which I mentioned in the configuration of node. js, which is the server master file):var session =

In this lesson, we'll use Chai's request method to test our Node application ' s API responses.By the end of this lesson, you'll know how to:-Install the prerequisites to use mocha and chai in your application-Test for HTTP status response codes-Test for a string of text on a page-Test for a JSON response and validate the properties of the object-Write tests that is verify the response of your application,

The Express installation under node. JS can refer to the official website http://www.expressjs.com.cn/Here are some different places to put the files in our generated Dist folder in public. And then on the command lineThis allows you to start the project, but do not use node App.js now this 8.0 version does not seem to

node. JS has built-in cluster functionality under the v0.6.0 version, as a cluster module for multi-core processing of nodejs, and easier scripting for a load-balanced cluster.The script references the other person's material, builds a server.js (because the virtual machine has only 1 cores, for the simulation multi-threading, so the use of numcpus+4) var cluster = require(‘cluster‘);var htt

. Method applies to the predicate of the inner router, call the inner layer router, for the HTTP predicate of the inner layer router:Methods.foreach (function(method) {Route.prototype[method]=function(){ varHandles =Flatten (Slice.call (arguments)); for(vari = 0; i ) { varHandle =Handles[i]; if(typeofHandle!== ' function ') { varType =Tostring.call (handle); varmsg = ' Route ' + Method + ' () requires callback functions but got a ' +type; Throw NewError (msg); } debug ('%s%s ', m

This article mainly introduces node. how to Use the express middleware bodyParser in js. If you need it, refer to bodyParser for parsing the content in the body of the client request and use JSON encoding internally, url encoding and file upload. The following is an example of file upload. Create a 1.html page The C

node. JS Express cross-domain problem solved this problem, that's really cool! Cross-domain problem mainly in the header of the first to provide a world-class header definition http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html and then provide a netizen to provide a detailed header Http://kb.cnblogs.com/page/92320/these two help to understand the type a

varExpress = require ('Express');varApp =Express ();//home Output "Hello World"App.Get('/', Function (req, res) {Console.log ("Home GET Request"); Res.send ('Hello GET');}) //POST RequestApp.post ('/', Function (req, res) {Console.log ("Home POST Request"); Res.send ('Hello POST');}) ///del_user Page ResponseApp.Get('/del_user', Function (req, res) {Console.log ("/del_user response to a DELETE request"); Re

These days, I have contacted node. js + express and found that no matter whether jade or ejs template system is used, a layout. (Jade | ejs) file will be automatically created. It is also used in a file name convention, instead of specifying layout in the code. However, in actual projects, multiple layout files may be required to render the page layout. It is imp

Recently in the NUXT project began to move some cross-domain requests to express, in fact, similar to other languages, HTTP object requests, receive requests are written very smoothly. Most of the previously used request parts are get requests, so in addition to attention to the coding problem, basically what the interface is written quickly, but in the post request due to the calculation of content-length, there is a problem due to the Chinese calcul

App.use (Bodyparser.json ());When a client requests an interface, if the named request header type is Content-type=application/jsonThe Bodyparser will automatically parse the JSON format data in the body correctly,Bodyparser relies on Raw-body library, Raw-body Library has such a piece of codefunction Cleanup () { received = buffer = null stream.removelistener (' data ', OnData) Stream.removelistener (' End ', onEnd) Stream.removelistener (' Error ', onEnd) stream.removelistener (' clo

Write down the following code before referencing the route:App.use (' * ', function (req, res, next) {Res.header ("Access-control-allow-origin", "*");Res.header ("Access-control-allow-headers", ' Content-type,content-length, Authorization, Accept,x-requested-with ') ;Res.header ("Access-control-allow-methods", "put,post,get,delete,options");Res.header ("x-powered-by", ' 3.2.1 ')Next ();});You can use Ajax to complete cross-domain access.Resolve cross-domain issues with the

This article mainly introduces node. how to Use the express middleware cookieParser in js. If you need it, refer to cookieParser middleware to obtain the content in the cookie sent by the web browser. after cookieParser middleware is used, The htto. IncomingMessage object requested by the client has a cookie attribute, which is an array of objects, It stores all

VS code is a Microsoft produced a cross-platform of the lightweight editor, I do not advertise, want to know their own to search it, in short I like it.: https://code.visualstudio.com/Installation is completed should be automatically added to the environment variables, do not remember, if you do not add the environment variable. Installation finished directly see version:VS code opens the site created in the previous article Rc_web (optional below) Direct desktop shortcut icon launches vs

JS: Simple Method example for getting node elements, js node element example This example describes how to obtain node elements in JavaScrip

In-depth analysis of node. js asynchronous API and its limitations, in-depth analysis of node. jsapi Reasons for using asynchronous APIs The concept of Asynchronization first becomes popular in Web because Javascript is executed on a single thread in the browser, and a thread is also shared with UI rendering. this mean

[Node. js] uses the File API to upload files asynchronously, and node. jsapi Address: http://www.moye.me/2014/11/05/html5-filereader/ Recently, I was working on a network disk project, which involved uploading large files. The question is: How can I display the File Upload progress in real time?Problem breakdown It se

This article mainly introduces how to use Meteor with Node. js Code example of real-time chat application, Node. as an asynchronous framework, js is used to compile real-time applications. For more information, see Derby. the framework for