我有一个Node＆Express应用程序，当前托管在共享主机上。我想使用Phusion Passenger运行和管理该应用程序。我的托管帐户支持我从未使用过的由Passenger管理的nodejs应用程序。

设置Node应用程序时生成的服务器代码是基本的服务器设置，如下所示。

var http = require('http');
var server = http.createServer(function(req,res) {
    res.writeHead(200,{'Content-Type': 'text/plain'});
    var message = 'It works!\n',version = 'NodeJS ' + process.versions.node + '\n',response = [message,version].join('\n');
    res.end(response);
});
server.listen();

我想用下面的代码替换它，该代码包含我用于服务API路由的express元素。

//import modules
var express = require('express'),bodyParser = require('body-parser'),morgan = require('morgan'),cors = require('cors');
    path = require('path');

var app = express();
var port = process.env.PORT || 3000;

//import database connection from dbconnect.js file
var mysql = require('./dbconnect/dbconnect');

//Parse as urlencoded and json.
app.use(bodyParser.urlencoded({extended:false}));
app.use(bodyParser.json());

//adding middleware - cors
app.use(cors());

//Http logger
app.use(morgan('dev'));

//Uncomment for production
//app.use(express.static(__dirname + '/public'));

// Point static path to public
app.use(express.static(path.join(__dirname,'public')));

//import routes from /routes/routes.js
var user = require('./routes/Users');  
    route = require('./routes/route');
    router = require('./router/router');
//adding routes
app.use('/api',user,route,router);

// Catch all other routes and return the index file
app.get('/*',(req,res) => { res.sendFile(path.join(__dirname,'/public/index.html'));
});

app.use(function (req,res,next){
    res.header("access-control-allow-origin","*");
    res.header("access-Control-Allow-Headers","x-access-token,Origin,Content-Type,accept");
    next();
});

app.listen(port,function() {console.log('Server started at http://localhost:'+port+'/');});

但是我得到了错误：

我目前正在使用 Forever 在共享服务器上运行服务器脚本，该脚本运行正常，但效率不高，所以我想切换到使用Passenger。