我尝试根据Heroku的说明在Node.js应用程序上搭建一个样例,并将其部署到Heroku上。这里是他们的说明:https://devcenter.heroku.com/articles/nodejs
当我使用
应用程序部署并启动,但每次都崩溃。我从应用程序中看到的日志输出如下:
foreman start
在本地运行应用程序时,一切都正常。但是,每次我部署应用程序时,它就会崩溃。我做错了什么?
Procfile
文件内容如下:
web: node web.js
我的 package.json
文件包含以下内容:
{
"name": "testapp",
"version": "0.0.1",
"engines": {
"node": "0.6.15"
, "npm": "1.1.9"
}
, "dependencies": {
"tower": "0.4.0-12"
}
}
我的web.js
包含如下内容:
var express = require('express');
var app = express.createServer(express.logger());
app.get('/', function(request, response) {
response.send('Hello World!');
});
var port = process.env.PORT || 3000;
app.listen(port, function() {
console.log("Listening on " + port);
});
应用程序部署并启动,但每次都崩溃。我从应用程序中看到的日志输出如下:
2012-04-27T20:21:31+00:00 heroku[web.1]: State changed from created to starting
2012-04-27T20:21:37+00:00 heroku[web.1]: Starting process with command `node web.js`
2012-04-27T20:21:38+00:00 app[web.1]:
2012-04-27T20:21:38+00:00 app[web.1]: node.js:201
2012-04-27T20:21:38+00:00 app[web.1]: throw e; // process.nextTick error, or 'error' event on first tick
2012-04-27T20:21:38+00:00 app[web.1]: ^
2012-04-27T20:21:38+00:00 app[web.1]: Error: Cannot find module 'express'
2012-04-27T20:21:38+00:00 app[web.1]: at Function._resolveFilename (module.js:332:11)
2012-04-27T20:21:38+00:00 app[web.1]: at Function._load (module.js:279:25)
2012-04-27T20:21:38+00:00 app[web.1]: at Module.require (module.js:354:17)
2012-04-27T20:21:38+00:00 app[web.1]: at require (module.js:370:17)
2012-04-27T20:21:38+00:00 app[web.1]: at Object.<anonymous> (/app/web.js:1:77)
2012-04-27T20:21:38+00:00 app[web.1]: at Module._compile (module.js:441:26)
2012-04-27T20:21:38+00:00 app[web.1]: at Object..js (module.js:459:10)
2012-04-27T20:21:38+00:00 app[web.1]: at Module.load (module.js:348:31)
2012-04-27T20:21:38+00:00 app[web.1]: at Function._load (module.js:308:12)
2012-04-27T20:21:38+00:00 app[web.1]: at Array.0 (module.js:479:10)
2012-04-27T20:21:39+00:00 heroku[web.1]: Process exited with status 1
2012-04-27T20:21:40+00:00 heroku[web.1]: State changed from starting to crashed
2012-04-27T20:30:01+00:00 heroku[router]: Error H10 (App crashed) -> GET testapp.herokuapp.com/ dyno= queue= wait= service= status=503 bytes=
package.json
中?通常只需使用npm ls
即可。试图了解有效地组装package.json
的方法。 - ylluminate