nodejs服務器應用程序類型錯誤，如path.join

Question

因爲我運行我的server.js，它啓動相當不錯，與主凝視頁面被加載，但我必須輸入暱稱進入任何房間。當我輸入名稱並點擊創建聊天室按鈕時，它顯示這種類型的錯誤。由於我是新來構建node.js的應用程序，請幫我解決下面提供這個issue..The服務器代碼..

TypeError: Arguments to path.join must be strings 
     at path.js:360:15 
     at Array.filter (native) 
     at exports.join (path.js:358:36) 
     at exports.send (/home/gauz/Desktop/hackview-master/node_modules/connect/lib/middleware/static.js:129:20) 
     at ServerResponse.res.sendfile (/home/gauz/Desktop/hackview-master/node_modules/express/lib/response.js:186:3) 
     at app.get.req.session.nick (/home/gauz/Desktop/hackview-master/server.js:71:9) 
     at callbacks (/home/gauz/Desktop/hackview-master/node_modules/express/lib/router/index.js:272:11) 
     at param (/home/gauz/Desktop/hackview-master/node_modules/express/lib/router/index.js:246:11) 
     at param (/home/gauz/Desktop/hackview-master/node_modules/express/lib/router/index.js:243:11) 
     at pass (/home/gauz/Desktop/hackview-master/node_modules/express/lib/router/index.js:253:5) 
     at Router._dispatch (/home/gauz/Desktop/hackview-master/node_modules/express/lib/router/index.js:280:5) 
     at Object.Router.middleware [as handle] (/home/gauz/Desktop/hackview-master/node_modules/express/lib/router/index.js:45:10) 
     at next (/home/gauz/Desktop/hackview-master/node_modules/connect/lib/http.js:204:15) 
     at next (/home/gauz/Desktop/hackview-master/node_modules/connect/lib/middleware/session.js:322:9) 
     at /home/gauz/Desktop/hackview-master/node_modules/connect/lib/middleware/session.js:341:9 
     at /home/gauz/Desktop/hackview-master/node_modules/connect/lib/middleware/session/memory.js:52:9 
     at process._tickCallback (node.js:415:13) 

服務器代碼：

var express=require('express'), 
    app = express.createServer(), 
    sharejs = require('share'), 
    sharejsOptions={db:{type:'none'}}; 
/* 
var express=require('express'); 
var app = express(); 
var sharejs = require('share'); 
var sharejsOptions={db:{type:'none'}}; 
*/ 
var env = process.env.NODE_ENV; 

//if we were provided redis options, use them for persistence 
//the if case is for developers not using redis 
if(process.env.redis_port){ 
    sharejsOptions.db= { 
     type: 'redis', 
     prefix: '', 
     port: process.env.redis_port, 
     auth: process.env.redis_auth || null 
    } 
}; 

sharejs.server.attach(app, sharejsOptions);//attach to express 

if (env !== 'production') 
    app.use(express.logger('dev')); 

app.use(express.static(__dirname + '/public')); 
app.use(express.favicon(__dirname+"/public/favicon.ico")); 
app.use(express.cookieParser()); 
app.use(express.session({secret:"SuperSecretSessionKey"})); 

//heroku support 
var port = process.env.PORT || 8000; 
app.listen(port); 
console.log('App running on port : '+port); 

//webRTC Stuff 
var webRTC = require('webrtc.io').listen(app); 
require('./rtc.js')(webRTC); 

app.get('/', function(req, res) { 
    res.sendfile(__dirname + '/public/room.html'); 
}); 

/** Create a new random room */ 
app.get('/join',function(req,res){ 
    var roomName=req.query.nickname.split('@')[1]; 
    if(!roomName) 
    roomName=getRandomRoom(); 
    var nickName = req.query.nickname.split('@')[0]; 
    req.session.nick = nickName; 
    res.redirect('/room/'+roomName); 
}); 

var getRandomRoom = function(){ 
    var chars = "ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz"; 
    var string_length = 8; 
    var randomstring = ''; 
    for (var i=0; i<string_length; i++) { 
    var rnum = Math.floor(Math.random() * chars.length); 
    randomstring += chars.substring(rnum,rnum+1); 
    } 
    return randomstring; 
} 

app.get('/room/:roomName',function(req,res){ 
    if(req.session.nick || req.query.asknick){ 
    //if a person has his nickname set, let him reach that 
    res.sendfile(__dirname+'/public/room.html'); 
    } 
    else{ 
    //make sure he/she is asked a username 
    res.redirect('/room/'+req.params.roomName+'?asknick=yes'); 
    } 
}); 

app.get('/setnick',function(req,res){ 
    res.cookie('nick',req.query.nick); 
    req.session.nick = req.query.nick; 
    res.send(''); 
}); 

app.get('/debug',function(req,res){ 
    res.json(req.session); 
}); 

Answer 1

據this GitHub issue ，你需要調用從這個替換到res.sendfile：

res.sendfile(__dirname+'/public/room.html'); 

這樣：

res.sendfile('/public/room.html', { root: __dirname });