接近时间。我尝试使用节点Js和Socket.io编写聊天应用程序，我有1页login.html，1页chat.html和server.js文件。当我使用UserA登录时，我将发送电子邮件并传递给服务器并进行验证。之后，转到页面chat.html。在这里，我显示列表用户，但是当我尝试刷新页面chat.html时，socket.id发生了变化。我在数据库MongoDb中刷新后解压缩了socket.id，但是当我用UserB其他浏览器登录时，在UserA的刷新页面之后，但是UserB的socket.id发生了变化，而不是用户A.抱歉我的英文。
这是login.html页面
<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<body>
<div class="container">
<form class="form-signin" id="formLogin">
<h2 class="form-signin-heading">Please sign in</h2>
<label for="inputEmail" class="sr-only">Email address</label>
<input type="email" id="inputEmail" class="form-control" placeholder="Email address" required="" autofocus="">
<label for="inputPassword" class="sr-only">Password</label>
<input type="password" id="inputPassword" class="form-control" placeholder="Password" required="">
<div class="checkbox">
<label>
<input type="checkbox" value="remember-me"> Remember me
</label>
</div>
<button class="btn btn-lg btn-primary btn-block" type="submit">Sign in</button>
</form>
</div> <!-- /container -->
<script type="text/javascript">
jQuery(function ($){
var socket= io.connect('http://localhost:8080');
var $email =$('#inputEmail'),
$password=$('#inputPassword'),
$login=$('#formLogin');
$login.submit(function (event){
socket.emit('login', { email:$email.val(), password:$password.val()});
socket.on('CheckLogin', function (data){
console.log('show something');
if(data){
console.log(data);
window.location.href='chat';
}else {
alert('Tai khoan hoac mat khau khong dung');
}
});
/* ,function (data){
console.log(data);
if(data){
console.log('Login successfuly');
window.location.href = "chat";
socket.on('sendId', function(data){
console.log(data[0]._id);
});
}else {
console.log('Login faile');
}
}*/
event.preventDefault();
});
});
</script>
</body>
</html>
这是server.js文件
var app = require('express')(),
server = require('http').Server(app),
io=require('socket.io')(server),
mongoose=require('mongoose');
server.listen(8080);
var mongoURL = 'mongodb://localhost/ChatDatabase';
app.get('/login', function(req, res){
res.sendFile(__dirname+'/signin.html');
});
var emailprecentLogin='';
var namePreLogin = '';
var logInStatus = false;
var Users= mongoose.model('Users',{
email :String,
name:String,
password:String,
socketId :String
});
var Messages = mongoose.model('Messages',{
name :String,
message:String
});
/*list variable*/
var mailLogin = '';
var statusLogin = false ;
var listLogin =[];
mongoose.connect(mongoURL , function(err, db){
if(err){
console.log('Connect err');
}else {
console.log('Connect successfuly');
/*get value send from loginform and verify*/
io.on('connection', function (socket){
socket.on('login', function (data){
var tmpEmail = data.email ;
var tmpPass= data.password ;
mailLogin = data.email;
console.log('info login' + tmpEmail + tmpPass);
Users.findOne({ email:tmpEmail, password:tmpPass }).exec(function(err , docs){
if(docs==null){
console.log(err +typeof(docs));
socket.emit('CheckLogin', false);
}else {
if(docs.email == tmpEmail && docs.password==tmpPass){
statusLogin=true;
socket.emit('CheckLogin', true);
console.log('Info of user login:'+docs + typeof(docs));
app.get('/chat', function (req, res){
res.sendFile(__dirname+'/chat.html');
});
}
}
});
});/*end verify login*/
socket.emit('tmpEmailLogin',mailLogin );
/*update socket id when user f5 or refresh page*/
socket.on('connectServer', function(data){
/*console.log(data);*/
console.log('User F5'+data);
var tmpSocketId = socket.id ;
var tmpLogin = data;
Users.update({email:data},{$set:{socketId:tmpSocketId}},function (err, userUpdate){
if(err){
/*console.log(err);*/
console.log("err sendSocketID");
}else {
Users.find({}).exec(function(err, docs){
if(err){
console.log('Err find list user');
}else {
socket.emit('listUser', docs);
}
});
Users.find({email:mailLogin}).exec(function(err, docs){
if(err){
console.log('Err find list user');
}else {
console.log('Updated socketId');
/*console.log(docs);*/
}
});
}
});
});
/*update socket when user click item*/
socket.on('updateSocketId', function(data){
Console.log('user f5 :' + mailLogin);
});
});
}
});
这是chat.html文件
<!DOCTYPE html>
<!-- saved from url=(0040)http://getbootstrap.com/examples/signin/ -->
<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
<meta name="description" content="">
<meta name="author" content="">
<link rel="icon" href="http://getbootstrap.com/favicon.ico">
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" >
<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap-theme.min.css" >
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<title>Chat</title>
<script src="http://code.jquery.com/jquery-latest.min.js"></script>
<script src="/socket.io/socket.io.js"></script>
<style type="text/css">
#viewContent{
color: black ;
height: 400px;
background-color: #F5F5F5;
overflow: scroll;
}
#listUser{
height: 400px;
}
</style>
</head>
<body>
<div id='header'>
<h2 class="title">This is chat box</h2>
</div>
<div id='content' >
<div id='listUser' class='col-md-4'>
<li id ='list' class = "list-group-item active">List User</li>
</div>
<div name='chatbox' class='col-md-8'>
<li id ='yourname' class = "list-group-item active">Your Name</li>
<div id='viewContent'></div>
<div name='formInput' >
<form class='' id='formChat'>
<div class="form-group">
<label class="sr-only" for="contentChat">Enter message</label>
<input type="text" class="form-control" id="contentChat" placeholder="Enter message" />
<input type='submit' class='btn btn-primary ' value ='Send'/>
</div>
</form>
</div>
</div> <!-- chat box div -->
</div>
<script type="text/javascript">
jQuery(function($){
var socket = io.connect('http://localhost:8080');
var $contentChat = $('#contentChat'),
$send =$('formChat');
var tmpEmailLogin;
var listID = [];
var idSocket='' ;
var emailPre= '';/*user login precent*/
var tenLogin ='';
var value_id ='';
/*<----------- chat
send list user form server
set connect 2 user
show message
------------->*/
/* socket.on('infoLogin', function(docs){
emailPre=docs ;
});*/
/*send list user */
socket.on('tmpEmailLogin', function(data){
tmpEmailLogin = data;
/*console.log(data);*/
socket.emit('connectServer',tmpEmailLogin); /*gửi socket để set socketId lên database*/
});
/*console.log('user login :' +tmpEmailLogin);*/
socket.on('listUser', function(data){/* show list user in database*/
console.log('socketId listUser :' + socket.id);
var j = 0 ;
/*console.log('Email login:' +emailPre);*/
$('#listUser').empty();
for(var i =0 ; i<data.length; i++){
$('#listUser').append('<a href ="#" id="'+ data[i].email+'" class="list-group-item" value="'+data[i].socketId+'">' +data[i].name+ '</a>');
}
});
var click = 0 ;
$(document).on('click', 'a.list-group-item', function(event){
click ++;
$('#viewContent').innerHTML='';
if(click =1){
$('a.list-group-item').each(function(i , obj){
this.setAttribute("class", " list-group-item");
click = 0 ;
$('#viewContent').empty();
});
}
/*emailLogin=this.id;*/
var reqIdOfEmail = this.id;
this.setAttribute("class", " list-group-item active");
socket.emit('updateSocketId', reqIdOfEmail);
socket.on('ResSocket', function (data){
idSocket = data.idSk;
nameOfSk = data.nameReq ;
console.log(nameOfSk+idSocket );
});
event.preventDefault();
}); /* end click*/
$('#formChat').submit(function(event){
var $contentMsg = $('#contentChat').val();
/*alert($contentMsg);*/
if(idSocket!=''&& idSocket!=null){
socket.emit('SendMsg', {idsocket:idSocket, msg:$contentMsg, name:tenLogin})
}
event.preventDefault();
});
/*P2P message*/
socket.on('P2Pmessage', function (data){
/*var nameReq= data.name;*/
console.log('show something here');
var msgContent=data.content;
$('#viewContent').append('<b></b>'+msgContent +'<br>' );
});
});
</script>
</body>
</html>
答案 0 :(得分：2)
您可以将您的用户加入同一个房间， 所以即使socketId会改变 他们可以发送和接收消息。
您可以通过此代码加入会议室：
io.on('connection', function(socket){
socket.join('some room');
});
并向房间发送消息：
io.to('some room').emit('some event'):
您可以找到更多文档here。