Node.js socket.io+;的最佳方法是什么;快速会话支持?
我是node.js新手,我似乎找不到一个好方法来创建一个会话,该会话可以由来自express和socket.io的用户进行交互。我已经尝试了很多解决方案,但是没有一个有效。如有任何建议,将不胜感激Node.js socket.io+;的最佳方法是什么;快速会话支持?,node.js,session,express,socket.io,Node.js,Session,Express,Socket.io,我是node.js新手,我似乎找不到一个好方法来创建一个会话,该会话可以由来自express和socket.io的用户进行交互。我已经尝试了很多解决方案,但是没有一个有效。如有任何建议,将不胜感激 谢谢 可以给我您正在使用的确切代码片段吗?我能够从示例中获得一个基本的聊天应用程序和多人游戏,并从节点中运行,我将查看您尝试使用的示例 简而言之,您需要为io建立一个变量来要求sockets.io模块。从那里,您还需要在app.js文件中写入所有可能发送和接收的套接字消息。这是我从你那里拿的 安装No
谢谢 可以给我您正在使用的确切代码片段吗?我能够从示例中获得一个基本的聊天应用程序和多人游戏,并从节点中运行,我将查看您尝试使用的示例 简而言之,您需要为io建立一个变量来要求sockets.io模块。从那里,您还需要在app.js文件中写入所有可能发送和接收的套接字消息。这是我从你那里拿的 安装Node后,为应用程序创建一个新文件夹,并创建一个名为package.json的空白文件。Node.JS读取此文件以确定运行应用程序所需的依赖项。在此package.json文件中复制以下内容:
{
"name": "mukhin_chat",
"description": "example chat application with socket.io",
"version": "0.0.1",
"dependencies": {
"express": "2.4.6",
"socket.io": "0.8.4"
}
var app = require('express').createServer()
var io = require('socket.io').listen(app);
app.listen(8080);
// routing
app.get('/', function (req, res) {
res.sendfile(__dirname + '/index.html');
});
// usernames which are currently connected to the chat
var usernames = {};
io.sockets.on('connection', function (socket) {
// when the client emits 'sendchat', this listens and executes
socket.on('sendchat', function (data) {
// we tell the client to execute 'updatechat' with 2 parameters
io.sockets.emit('updatechat', socket.username, data);
});
// when the client emits 'adduser', this listens and executes
socket.on('adduser', function(username){
// we store the username in the socket session for this client
socket.username = username;
// add the client's username to the global list
usernames[username] = username;
// echo to client they've connected
socket.emit('updatechat', 'SERVER', 'you have connected');
// echo globally (all clients) that a person has connected
socket.broadcast.emit('updatechat', 'SERVER', username + ' has connected');
// update the list of users in chat, client-side
io.sockets.emit('updateusers', usernames);
});
// when the user disconnects.. perform this
socket.on('disconnect', function(){
// remove the username from global usernames list
delete usernames[socket.username];
// update list of users in chat, client-side
io.sockets.emit('updateusers', usernames);
// echo globally that this client has left
socket.broadcast.emit('updatechat', 'SERVER', socket.username + ' has disconnected');
});
});
}
现在回到命令行并键入“npm install”以包括express和socket.io。创建第二个名为app.js的文件,并使用以下命令:
{
"name": "mukhin_chat",
"description": "example chat application with socket.io",
"version": "0.0.1",
"dependencies": {
"express": "2.4.6",
"socket.io": "0.8.4"
}
var app = require('express').createServer()
var io = require('socket.io').listen(app);
app.listen(8080);
// routing
app.get('/', function (req, res) {
res.sendfile(__dirname + '/index.html');
});
// usernames which are currently connected to the chat
var usernames = {};
io.sockets.on('connection', function (socket) {
// when the client emits 'sendchat', this listens and executes
socket.on('sendchat', function (data) {
// we tell the client to execute 'updatechat' with 2 parameters
io.sockets.emit('updatechat', socket.username, data);
});
// when the client emits 'adduser', this listens and executes
socket.on('adduser', function(username){
// we store the username in the socket session for this client
socket.username = username;
// add the client's username to the global list
usernames[username] = username;
// echo to client they've connected
socket.emit('updatechat', 'SERVER', 'you have connected');
// echo globally (all clients) that a person has connected
socket.broadcast.emit('updatechat', 'SERVER', username + ' has connected');
// update the list of users in chat, client-side
io.sockets.emit('updateusers', usernames);
});
// when the user disconnects.. perform this
socket.on('disconnect', function(){
// remove the username from global usernames list
delete usernames[socket.username];
// update list of users in chat, client-side
io.sockets.emit('updateusers', usernames);
// echo globally that this client has left
socket.broadcast.emit('updatechat', 'SERVER', socket.username + ' has disconnected');
});
});
最后,创建面向客户端的index.html文件,该文件将运行并显示给连接到您的应用程序的用户:
<script src="/socket.io/socket.io.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>
<script>
var socket = io.connect('http://localhost:8080');
// on connection to server, ask for user's name with an anonymous callback
socket.on('connect', function(){
// call the server-side function 'adduser' and send one parameter (value of prompt)
socket.emit('adduser', prompt("What's your name?"));
});
// listener, whenever the server emits 'updatechat', this updates the chat body
socket.on('updatechat', function (username, data) {
$('#conversation').append('<b>'+username + ':</b> ' + data + '<br>');
});
// listener, whenever the server emits 'updateusers', this updates the username list
socket.on('updateusers', function(data) {
$('#users').empty();
$.each(data, function(key, value) {
$('#users').append('<div>' + key + '</div>');
});
});
// on load of page
$(function(){
// when the client clicks SEND
$('#datasend').click( function() {
var message = $('#data').val();
$('#data').val('');
// tell server to execute 'sendchat' and send along one parameter
socket.emit('sendchat', message);
});
// when the client hits ENTER on their keyboard
$('#data').keypress(function(e) {
if(e.which == 13) {
$(this).blur();
$('#datasend').focus().click();
}
});
});
</script>
<div style="float:left;width:100px;border-right:1px solid black;height:300px;padding:10px;overflow:scroll-y;">
<b>USERS</b>
<div id="users"></div>
</div>
<div style="float:left;width:300px;height:250px;overflow:scroll-y;padding:10px;">
<div id="conversation"></div>
<input id="data" style="width:200px;" />
<input type="button" id="datasend" value="send" />
</div>
var socket=io.connect('http://localhost:8080');
//在连接到服务器时,通过匿名回调请求用户名
socket.on('connect',function(){
//调用服务器端函数“adduser”并发送一个参数(prompt的值)
emit('adduser',prompt(“你叫什么名字?”);
});
//侦听器,无论何时服务器发出“updatechat”,都会更新聊天主体
socket.on('updatechat',函数(用户名、数据){
$(“#对话”).append(“+username+”:“+data+”
”);
});
//侦听器,每当服务器发出“updateusers”时,就会更新用户名列表
socket.on('updateusers',函数(数据){
$('#users').empty();
$。每个(数据、函数(键、值){
$(“#用户”).append(“”+key+“”);
});
});
//加载页面
$(函数(){
//当客户端单击SEND时
$('#datasend')。单击(函数(){
var message=$('#data').val();
$('数据').val('');
//告诉服务器执行“sendchat”并发送一个参数
发出('sendchat',消息);
});
//当客户端在键盘上按ENTER键时
$(“#数据”)。按键(功能(e){
如果(e.which==13){
$(this.blur();
$('#datasend')。焦点()。单击();
}
});
});
使用者
使用:node app.js运行服务器本身
在命令提示窗口中
主要收获:
HTH谢谢分享您的代码。建议您更新expressJS 4.x的代码,因为您使用的是“express”:“2.4.6”版本太旧了。请使用never版本。从那时起,许多事情都发生了变化。最好是用Express 4.9编写谢谢。我们一定要澄清这一点:不是我的代码,michael的:)