Angularjs 角度+;socketio don';不行?
目前,我正试图用socket.io和angular.js实现一个实时内容,就我而言,我做的一切都是正确的,但实时性不起作用。也许我错过了什么重要的事情 我将写一个它应该如何工作的场景。基本上,用户编写内容,然后将值发布到服务器。在home.html中,内容应该是实时的(我在下面列出了所有内容,包括home.html) 这是密码 server.jsAngularjs 角度+;socketio don';不行?,angularjs,node.js,socket.io,mean-stack,Angularjs,Node.js,Socket.io,Mean Stack,目前,我正试图用socket.io和angular.js实现一个实时内容,就我而言,我做的一切都是正确的,但实时性不起作用。也许我错过了什么重要的事情 我将写一个它应该如何工作的场景。基本上,用户编写内容,然后将值发布到服务器。在home.html中,内容应该是实时的(我在下面列出了所有内容,包括home.html) 这是密码 server.js var express = require('express'); var app = express(); var morg
var express = require('express');
var app = express();
var morgan = require('morgan');
var mongoose = require('mongoose');
var bodyParser = require('body-parser');
var path = require('path');
var config = require('./config');
// REAL TIME WORK
var http = require('http').Server(app);
var io = require('socket.io')(http);
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());
app.use(function(req, res, next) {
res.setHeader('Access-Control-Allow-Origin', '*');
res.setHeader('Access-Control-Allow-Methods', 'GET, POST');
res.setHeader('Access-Control-Allow-Headers', 'X-Requested-With,content-type, Authorization');
next();
});
// log our request to our terminal
app.use(morgan('dev'));
// Connect to our database using mongoose
mongoose.connect(config.database, function(err) {
if(err) {
console.log("Connection to a mongodb database has failed");
} else {
console.log("Connected to a database");
}
});
// set our static files to a designated location
app.use(express.static(__dirname + '/public'));
var apiRouter = require('./app/routes/api') (app, express, io);
app.use('/api', apiRouter);
// registered before your api routes.
app.get('*', function(req, res) {
res.sendFile(path.join(__dirname + '/public/app/views/index.html'));
});
http.listen(config.port, function(err) {
if(err) {
console.log("There's an error connecting the app to port" + config.port);
} else {
console.log("App is listening on port " + config.port);
}
});
api.js
module.exports = function(app, express, io) {
// creating our first router
var apiRouter = express.Router();
// signup a user
var createStory = function(req, res) {
var story = new Story({
user: req.decoded.id,
content: req.body.content
});
story.save(function(err) {
if(err) {
res.send(err);
return;
}
io.emit('story', req.body.content);
res.json({ message: 'Story has been created!'});
});
};
apiRouter.route('/')
.post(createStory)
.get(function(req, res) {
Story.find({ user: req.decoded.id }, function(err, story) {
if(err) {
res.send(err);
return;
}
res.json(story);
});
});
service.js
angular.module('storyService', [])
.factory('Story', function($http, $window) {
// get all approach
var storyFactory = {};
var generateReq = function(method, url, data) {
var req = {
method: method,
url: url,
headers: {
'x-access-token': $window.localStorage.getItem('token')
},
cache: false
}
if(method === 'POST') {
req.data = data;
}
return req;
};
storyFactory.all = function() {
return $http(generateReq('GET', '/api/'));
};
storyFactory.create = function(storyData) {
return $http(generateReq('POST', '/api/', storyData));
};
storyFactory.getSingleStory = function(user_name, story_id) {
return $http(generateReq('GET', '/api/' + user_name + '/' + story_id));
};
storyFactory.allStories = function() {
return $http(generateReq('GET', '/api/all_stories'));
};
return storyFactory;
})
.factory('socketio', ['$rootScope', function ($rootScope) {
var socket = io.connect();
return {
on: function (eventName, callback) {
socket.on(eventName, function () {
var args = arguments;
$rootScope.$apply(function () {
callback.apply(socket, args);
});
});
},
emit: function (eventName, data, callback) {
socket.emit(eventName, data, function () {
var args = arguments;
$rootScope.$apply(function () {
if (callback) {
callback.apply(socket, args);
}
});
});
}
};
}]);
controller.js
angular.module('storyCtrl', ['storyService'])
.controller('StoryController', function(Story, $routeParams, $scope, socketio) {
var vm = this;
Story.all()
.success(function(data) {
$scope.stories = data;
});
Story.getSingleStory($routeParams.user_name, $routeParams.story_id)
.success(function(data) {
$scope.storyData = data;
});
vm.createStory = function() {
vm.message = '';
Story.create(vm.storyData)
.success(function(data) {
// clear the form
vm.storyData = {}
vm.message = data.message;
socketio.on('story', function () {
$scope.stories.push(data);
});
});
};
});
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>User Diary</title>
<base href="/">
<!-- CSS -->
<!-- load bootstrap from CDN and custom CSS -->
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootswatch/3.3.1/paper/bootstrap.min.css">
<!-- load angular and angular-route via CDN -->
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.3.8/angular.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.3.8/angular-route.js"></script>
<script src="/socket.io/socket.io.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular-ui-bootstrap/0.12.0/ui-bootstrap-tpls.js"></script>
<!-- directives -->
<!--controllers -->
<script src="app/controllers/storyCtrl.js"></script>
<script src="app/services/storyService.js"></script>
<!-- main Angular app files -->
<script src="app/app.routes.js"></script>
<script src="app/app.js"></script>
</head>
<body ng-app="userApp">
<main class="container">
<!-- ANGULAR VIEWS -->
<div ng-view></div>
</main>
</body>
</html>
用户日志
home.html
<div class="panel-body" ng-repeat="story in stories | reverse" >
<ul class="list-group">
<li class="list-group-item">
<div class="row">
<div class="col-xs-10 col-md-11">
<div>
<div class="mic-info">
{{ story.createdAt | date:'MMM d, yyyy' }}
</div>
</div>
<div class="comment-text">
<h4>{{ story.content }}</h4>
</div>
</div>
</div>
</li>
</ul>
</div>
-
{{story.createdAt}日期:'MMM d,yyyy'}
{{story.content}
我知道它是巨大的,我之所以发布这一切是因为我不想错过任何东西
我对整个socket.io+angular.js都是新手,如果你有什么意见可以教我一些关于socket.io+angular.js的东西,这对我来说意义重大:)下面是评论
vm
和$scope
angular.module('storyCtrl', ['storyService'])
.controller('StoryController', function(Story, $routeParams, socketio) {
var vm = this;
vm.stories = [];
Story.all()
.success(function(data) {
vm.stories = data;
});
Story.getSingleStory($routeParams.user_name, $routeParams.story_id)
.success(function(data) {
vm.storyData = data;
});
vm.createStory = function() {
vm.message = '';
Story.create(vm.storyData)
.success(function(data) {
// clear the form
vm.storyData = {}
vm.message = data.message;
});
};
socketio.on('story', function (data) {
vm.stories.push(data);
});
});
创建类似于ng controller=“StoryController as StoryCtrl”
的控制器,并使用ng repeat=“story in StoryCtrl.stories”
content
和createdAt
属性的对象时才响应post内容
// signup a user
var createStory = function(req, res) {
var story = new Story({
user: req.decoded.id,
content: req.body.content
});
story.save(function(err) {
if(err) {
res.send(err);
return;
}
io.emit('story', {
user: req.decoded.id,
createdAt: new Date(),
content: req.body.content
});
// you might be able to do instead
// io.emit('story', story.toObject())
res.json({ message: 'Story has been created!'});
});
};
在StoryController中,您每次创建新帖子时都要注册事件侦听器,您应该注册一次(另外,它将在服务器上第一次发出后注册)。另外,控制器似乎混合使用了
controllerAs
语法和$scope
感谢您的回复,但您能否详细说明这一点作为回答,以便我可以接受,我现在仍然不知道该怎么办。我已经发表了评论,因为我不确定它是否能解决问题。我的第一点意思是,您只需要注册事件侦听器socketio.on('story',function(content){/})
一次,而不是每次创建新的故事。其次,如果您使用的是controllerAs
语法,那么在您的情况下,您应该将分配给this
或vm
,而不是$scope
我应该在promise对象内部还是外部调用它?关于这一点,不要担心,现在的问题是将数据推送到哪里以及如何进行。请帮助我:(如果我给你看开放源代码和网站,可以吗?也许你可以指出我哪里做错了它工作正常,但第三次尝试后,实时数据就停止了,这真的很奇怪。如果你去你的帐户,尝试发布数据,然后去路由“/allStories”,实时不会显示。再次感谢你,我的意思是尝试打开2个浏览器,1个incognito和normal browserI无法测试,heroku上的代码没有更改。你现在可以检查它,基本上它仍然不是实时的,而且每当你点击第三个帖子时,数据都不会显示。socket.on('story',…)
仍然位于错误的位置,因此每次创建一个故事时,您都会添加一个新的侦听器。添加两个故事会创建两个侦听器,并且故事会被推送到故事
两次。ng repeat
然后停止工作,因为您有重复的项目。您的allStories路由不会是实时的,因为那里没有事件侦听器