angularjs - ERROR:- $http is undefined in angular in conroller.js file -

i new angular js

code is:

controller.js

var = angular.module('my',[]);   my.controller('appctrl',['$scope',function ($scope , $http){     console.log("hello world controller");      $http.get('/contactlist');     person1 ={         name: 'shubham',         email:'sbatra@gmail.com',         number:'111-222-3333'     };     person2 = {         name: 'ruk',         email:'r.rani@gmail.com',         number:'333-222-3333'     };     person3 ={         name: 'nidhi',         email:'nidhi459@gmail.com',         number:'111-222-4444'     };     var contactlist = [person1 , person2 , person3];     $scope.contactlist = contactlist;  } ]); 

and server.js

var express = require('express'); var app = express();  app.use(express.static(__dirname + "/public"));  app.get('/contactlist',function(req,res){     console.log("i recive request");  }); app.listen(3000); console.log("server running on port 3000"); 

when trying run program gives following error

"error: $http undefined @http://localhost:3000/controller/controller.js:6:2 e@https://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular.min.js:36:313 fe/this.$gethttps://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular.min.js:75:1

you havent injected using array syntax, found missing in minification

use

my.controller('appctrl',['$scope','$http',function ($scope , $http){}])