如何在vps中运行node.js应用程序
我用express和socket.io创build了一个node.js聊天应用http://socket.io/get-started/chat/
我在我的本地服务器上运行成功的聊天应用程序。 我必须在我的VPS中部署它。 有什么步骤要做？ 我在我的VPS中安装了node express和socket.io，并将所有内容上传到了服务器。
我在puTTY中运行命令$node index.js 。 它说在3000端口上听。
但是当我去那个url获取错误http：//******.in/socket.io/socket.io.js 404（未find）
但它运行在我的本地主机非常好。
index.js
var app = require('express')(); var url = require('url'); var server = require('http').Server(app); var io = require('socket.io')(server); var numUsers=0; var users={}; app.get('/', function(req, res){ res.sendFile(__dirname + '/index.html'); }); server.listen(3000, function(){ console.log('listening on *:3000'); }); io.sockets.on('connection',function(socket){ console.log('connected'); socket.on('send message',function(data,callback){ var msg=data.trim(); if(msg.substr(0,1)=='p'){ msg=msg.substr(1); var ind=msg.indexOf(' '); if(ind!=-1){ var name=msg.substr(0,ind); var msg=msg.substr(ind+1); if(name in users){ users[name].emit=('private',{msg:msg,nick:socket.nickname}); console.log('private message'); }else{ callback('Enter your name'); } }else{ callback('Enter private message'); } }else{ console.log('message'+data); io.sockets.emit('new message',{msg:msg,nick:socket.nickname}); } }); function updateNickNames(){ io.sockets.emit('usernames',Object.keys(users)); } function countUsers(){ io.sockets.emit('users count',{userscount:numUsers}); } socket.on('new user',function(data,callback){ if(data in users){ callback(false); }else{ ++numUsers; callback(true); socket.nickname=data; users[socket.nickname]=socket; updateNickNames(); countUsers(); } }); socket.on('disconnect',function(data){ if(!socket.nickname) return; delete users[socket.nickname]; --numUsers; updateNickNames(); countUsers(); io.sockets.emit('remove user',{username:socket.nickname}); }); });
的index.html
<!doctype html> <html> <head> <title>Socket.IO chat</title> <style> #chat{ height: 500px; } #content{ display: none; } #chatwrap{ float: left; border: 1px #000 solid; } .error{ color: red; } .private{ color:red; font-style:italic; } </style> </head> <body> <div id="nickwrap"> <p>Username</p> <p id="error"></p> <form id="setnick"> <input type="text" id="nickname"> <input type="submit" value="submit"/> </form> </div> <div id="content"> <p id="list"></p> <div id="chatwrap"> <div id="chat"></div> <div id="users"></div> <form id="send-message"> <input type="text" id="message"> <input type="submit" value="submit"/> </form> </div> </div> <script src="jquery.min.js"></script> <script src="/socket.io/socket.io.js"></script> <script> jQuery(function($){ var socket=io.connect(); var $nickForm=$('#setnick'); var $nickerror=$('#error'); var $nickname=$('#nickname'); var $messageForm=$('#send-message'); var $message=$('#message'); var $chat=$('#chat'); var $users=$('#users'); var $list=$('#list'); /*--client--*/ $nickForm.submit(function(e){ e.preventDefault(); socket.emit('new user',$nickname.val(),function(data){ if(data){ $('#nickwrap').hide(); $('#content').show(); }else{ $nickerror.html('username exists'); } }); $nickname.val(''); }); $messageForm.submit(function(e){ e.preventDefault(); socket.emit('send message',$message.val(),function(data){ $chat.append('<span class="error">'+data+'</span><br\>'); }); $message.val(''); }); /*--end client--*/ /*---server--*/ socket.on('users count',function(data){ var count=''; count+='There are<b>'+data.userscount+'</b>take part in chat'; $list.html(count); }); socket.on('remove user',function(data){ $users.append(data.username+'leftchat<br>'); }); socket.on('new message',function(data){ $chat.append("<b>"+data.nick+":</b>"+data.msg+"<br\>"); console.log('no'+data.userscount); }); socket.on('usernames',function(data){ var html=''; for(i=0;i<data.length;i++){ html+=data[i]+"Joined</br>"; } $users.html(html); }); socket.on('private',function(data){ console.log("private"); $chat.append('<span class="private">hello private'+data.nick+':'+data.msg+'</span><br\>'); }); /*--end server --*/ }); </script> </body> </html>