Socket.io + Express + Node + Angular通知

Question

I have an app where I'm trying to make a queue system for customers. 我有一个应用程序，我正在尝试为客户建立一个队列系统。 I am trying to make it so that when a customer joins the queue, it notifies the store employees of the join and let's them know to get on it and help the customer as soon as possible. 我正在尝试这样做，以便当一个客户加入队列时，它会通知商店员工加入，让他们知道加入并尽快帮助客户。

I can't seem to get Socket IO to talk with my front end at all, though. 不过，我似乎无法让Socket IO与我的前端交谈。

Here's the code I have, and I can't even get Node to recognize Socket as a library. 这是我的代码，我甚至无法让Node将Socket识别为库。 I've followed 3 different tutorials, and tried them all, but I can't see what's being done wrong in my server code. 我已经遵循了3个不同的教程，并尝试了所有这些，但我无法看到我的服务器代码中出错了什么。

Here's what I'm doing in my server that's related to Socket.io 这是我在服务器上与Socket.io相关的内容

var express = require('express');
var app = express();
var io = require('socket.io'); 


io.on('connection', function(socket){

    socket.emit('connection', "Connection created.")
    console.log("Socket.io is GO");

    socket.on('add customer', function(customer){
        console.log("Customer added", customer); 

    })

    socket.on('notification', function(data) {
        console.log("NEW CUSTOMER IN THE QUEUE", data);
    });

});

I can't seem to get it to run in my server, and when it DID run, it didn't show any of the socket.on events that I had in there and it wouldn't console.log anything. 我似乎无法在我的服务器上运行它，当它运行DID时，它没有显示我在那里的任何socket.on事件，它不会console.log任何东西。

What am I doing wrong? 我究竟做错了什么？ Has anyone successfully gotten Socket to play nicely with Express and Angular together? 有没有人成功地让Socket与Express和Angular一起玩得很好？

Answer 1

Looks like your code is incomplete or maybe you didn't implement well. 看起来你的代码不完整或者你没有很好地实现。

I created an example using angular.js, express, and socket.io trying to replicate your requirement. 我创建了一个使用angular.js，express和socket.io尝试复制您的需求的示例。

This is my server, app.js : 这是我的服务器， app.js ：

var express = require('express');
var app = express();
var server = require('http').Server(app);
var io = require('socket.io')(server);

app.use(express.static(__dirname + '/public'));

io.on('connection', function(socket) {
  console.log('new connection');

  socket.on('add-customer', function(customer) {
    io.emit('notification', {
      message: 'new customer',
      customer: customer
    });
  });
});

server.listen(4041, function() {
  console.log('server up and running at 4041 port');
});

Then I created a public folder with the following files: 然后我创建了一个包含以下文件的公用文件夹：

public/index.html

<!doctype>
<html ng-app="sampleApp">
  <head>
  </head>

  <body ng-controller="IndexController">
    <label>Please enter your name: </label>
    <input ng-model="currentCustomer.name"/>
    <button ng-click="join()">Join</button>
    <br/>

    <h1>New Customers: </h1>
    <ul>
      <li ng-repeat="customer in newCustomers">{{customer.name}}</li>
    </ul>

    <script src="https://cdn.socket.io/socket.io-1.3.5.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.1/angular.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.1/angular-route.js"></script>
    <script src="app.js"></script>
  </body>

</html>

public/app.js

var app = angular.module('sampleApp', ['ngRoute']);

app.config(['$routeProvider', function($routeProvider) {
  $routeProvider.when('/', {
    templateUrl: '/index.html'
  });
}]);

app.factory('socket', ['$rootScope', function($rootScope) {
  var socket = io.connect();

  return {
    on: function(eventName, callback){
      socket.on(eventName, callback);
    },
    emit: function(eventName, data) {
      socket.emit(eventName, data);
    }
  };
}]);

app.controller('IndexController', function($scope, socket) {
  $scope.newCustomers = [];
  $scope.currentCustomer = {};

  $scope.join = function() {
    socket.emit('add-customer', $scope.currentCustomer);
  };

  socket.on('notification', function(data) {
    $scope.$apply(function () {
      $scope.newCustomers.push(data.customer);
    });
  });
});

Answer 2

You need to set up your socket.io server so that it is listening on a specific port; 您需要设置您的socket.io服务器，以便它正在侦听特定端口; without it listening, it can't watch for clients connection and emmitting messages. 没有它监听，它无法监视客户端连接和发送消息。 You should change your code as follows to fix this: 您应该按如下方式更改代码以解决此问题：

var app = require('express')();
var server = require('http').Server(app);
var io = require('socket.io')(server);

//Existing Code

server.listen(1337, function(){
    console.log('listening on *:1337');
});

Socket.io + Express + Node + Angular通知

问题描述

2 个解决方案

解决方案1
12 已采纳 2015-06-25 15:44:01

解决方案2
1 2015-06-25 15:22:08

Socket.io + Express + Node + Angular通知

问题描述

2 个解决方案

解决方案1 12 已采纳 2015-06-25 15:44:01

解决方案2 1 2015-06-25 15:22:08

解决方案1
12 已采纳 2015-06-25 15:44:01

解决方案2
1 2015-06-25 15:22:08