NodeJS Routing
Express Web Server Routing
Creating Express Web Server
Express server came handy and it deeps through many user and community. It is getting popular.
Lets create a Express Server. For Package Management and Flexibility for Dependency We will use NPM(Node Package Manager).
1. Go to the Project directory and create package.json file. package.json
{
"name": "expressRouter",
"version": "0.0.1",
"scripts": {
"start": "node Server.js"
},
"dependencies": {
"express": "^4.12.3"
}
}2. Save the file and install the express dependency using following command npm install. This will create node_modules in you project directory along with required dependency.
3. Let's create Express Web Server. Go to the Project directory and create server.js file. server.js
var express = require("express");
var app = express();
//Creating Router() object
var router = express.Router();
// Provide all routes here, this is for Home page.
router.get("/",function(req,res){
res.json({"message" : "Hello World"});
});
app.use("/api",router);
// Listen to this Port
app.listen(3000,function(){
console.log("Live at Port 3000");
});4. Run the server by typing following command.
node server.jsIf Server runs successfully, you will se something like this.
5. Now go to the browser or postman and made a request
That is all, the basic of Express routing.
Now let's handle the GET,POST etc.
Change yous server.js file like
var express = require("express");
var app = express();
//Creating Router() object
var router = express.Router();
// Router middleware, mentioned it before defining routes.
router.use(function(req,res,next) {
console.log("/" + req.method);
next();
});
// Provide all routes here, this is for Home page.
router.get("/",function(req,res){
res.json({"message" : "Hello World"});
});
app.use("/api",router);
app.listen(3000,function(){
console.log("Live at Port 3000");
});Now if you restart the server and made the request to
http://localhost:3000/api/