将 Node.js 应用程序部署到 Heroku 的应用程序错误
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【中文标题】将 Node.js 应用程序部署到 Heroku 的应用程序错误【英文标题】：Application Error for deploying Node.js app to Heroku 【发布时间】：2016-02-10 22:20:09 【问题描述】：我不熟悉将 Github 项目部署到 Heroku。到目前为止，我已经成功地将我的应用程序连接到 Heroku 并进行了部署。该项目在我的本地机器上运行良好。但是，当我尝试启动我的应用程序的 heroku 网站时，它给了我这个错误：
“应用程序发生错误，您的页面无法访问 服务。请稍后再试。
如果您是应用程序所有者，请查看您的日志以了解详细信息。”
这是我的 heroku 日志，我无法理解。
2015-11-10T04:33:10.538175+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=compasss.herokuapp.com request_id=af3a9061-1b8f-47fe-9e2e-eafa624f2712 fwd="138.110.234.184" dyno= connect= service= status=503 bytes=
2015-11-10T04:33:10.649481+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=compasss.herokuapp.com request_id=e8fc1b43-f629-4e38-85c9-808d731e852e fwd="138.110.234.184" dyno= connect= service= status=503 bytes=
2015-11-10T04:33:11.334843+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=compasss.herokuapp.com request_id=149ffc6c-8a57-475c-9f64-5224bcf72bfd fwd="138.110.234.184" dyno= connect= service= status=503 bytes=
2015-11-10T04:33:12.207897+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=compasss.herokuapp.com request_id=4585d320-5d3b-43a0-ab85-a84f9734e373 fwd="138.110.234.184" dyno= connect= service= status=503 bytes=
2015-11-10T04:35:18.757410+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=compasss.herokuapp.com request_id=1d59ddd7-ff62-4b01-8b3a-df450fac5ba5 fwd="138.110.234.184" dyno= connect= service= status=503 bytes=
2015-11-10T04:35:19.737947+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=compasss.herokuapp.com request_id=2f8f9bc8-8299-4da9-bdad-eed9fa537573 fwd="138.110.234.184" dyno= connect= service= status=503 bytes=
2015-11-10T04:35:19.503853+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=compasss.herokuapp.com request_id=77870378-cde5-48e2-b4d2-e93526b1e10d fwd="138.110.234.184" dyno= connect= service= status=503 bytes=
2015-11-10T04:41:09.087924+00:00 heroku[api]: Deploy 5c325e8 by myemail@gmail.com
2015-11-10T04:41:09.087924+00:00 heroku[api]: Release v6 created by myemail@gmail.com
2015-11-10T04:41:09.271289+00:00 heroku[slug-compiler]: Slug compilation started
2015-11-10T04:41:09.271300+00:00 heroku[slug-compiler]: Slug compilation finished
2015-11-10T04:41:11.469002+00:00 heroku[web.1]: State changed from crashed to starting
2015-11-10T04:41:12.469938+00:00 heroku[web.1]: Starting process with command `node app.js`
2015-11-10T04:41:14.322786+00:00 app[web.1]: module.js:339
2015-11-10T04:41:14.322794+00:00 app[web.1]: throw err;
2015-11-10T04:41:14.322795+00:00 app[web.1]: ^
2015-11-10T04:41:14.322796+00:00 app[web.1]:
2015-11-10T04:41:14.322797+00:00 app[web.1]: Error: Cannot find module 'express3-handlebars'
2015-11-10T04:41:14.322797+00:00 app[web.1]: at Function.Module._resolveFilename (module.js:337:15)
2015-11-10T04:41:14.322798+00:00 app[web.1]: at Function.Module._load (module.js:287:25)
2015-11-10T04:41:14.322799+00:00 app[web.1]: at Module.require (module.js:366:17)
2015-11-10T04:41:14.322799+00:00 app[web.1]: at require (module.js:385:17)
2015-11-10T04:41:14.322800+00:00 app[web.1]: at Object.<anonymous> (/app/app.js:6:18)
2015-11-10T04:41:14.322800+00:00 app[web.1]: at Module._compile (module.js:425:26)
2015-11-10T04:41:14.322801+00:00 app[web.1]: at Object.Module._extensions..js (module.js:432:10)
2015-11-10T04:41:14.322802+00:00 app[web.1]: at Module.load (module.js:356:32)
2015-11-10T04:41:14.322802+00:00 app[web.1]: at Function.Module._load (module.js:311:12)
2015-11-10T04:41:14.322803+00:00 app[web.1]: at Function.Module.runMain (module.js:457:10)
2015-11-10T04:41:15.124877+00:00 heroku[web.1]: State changed from starting to crashed
2015-11-10T04:41:15.116760+00:00 heroku[web.1]: Process exited with status 1
2015-11-10T04:44:48.813133+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=compasss.herokuapp.com request_id=81fddfea-92e6-4c64-91aa-ec5d076fb8e6 fwd="138.110.234.184" dyno= connect= service= status=503 bytes=
2015-11-10T04:44:49.590449+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=compasss.herokuapp.com request_id=efa1b5fc-5a1e-4b31-acef-5a1025e8c99d fwd="138.110.234.184" dyno= connect= service= status=503 bytes=
2015-11-10T04:44:49.955648+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=compasss.herokuapp.com request_id=4af0cf53-ea53-4361-a5d2-6a3efc51a62f fwd="138.110.234.184" dyno= connect= service= status=503 bytes=
2015-11-10T04:51:46.883632+00:00 heroku[api]: Deploy b0f6afe by myemail@gmail.com
2015-11-10T04:51:46.883703+00:00 heroku[api]: Release v7 created by myemail@gmail.com
2015-11-10T04:51:46.979243+00:00 heroku[web.1]: State changed from crashed to starting
2015-11-10T04:51:47.041376+00:00 heroku[slug-compiler]: Slug compilation started
2015-11-10T04:51:47.041386+00:00 heroku[slug-compiler]: Slug compilation finished
2015-11-10T04:51:48.436794+00:00 heroku[web.1]: Starting process with command `node app.js`
2015-11-10T04:51:50.436732+00:00 app[web.1]: module.js:339
2015-11-10T04:51:50.436759+00:00 app[web.1]: at Function.Module._load (module.js:287:25)
2015-11-10T04:51:50.436761+00:00 app[web.1]: at Module._compile (module.js:425:26)
2015-11-10T04:51:50.436754+00:00 app[web.1]: throw err;
2015-11-10T04:51:50.436756+00:00 app[web.1]:
2015-11-10T04:51:50.436763+00:00 app[web.1]: at Function.Module._load (module.js:311:12)
2015-11-10T04:51:50.436755+00:00 app[web.1]: ^
2015-11-10T04:51:50.436759+00:00 app[web.1]: at Module.require (module.js:366:17)
2015-11-10T04:51:50.436757+00:00 app[web.1]: Error: Cannot find module 'express3-handlebars'
2015-11-10T04:51:50.436758+00:00 app[web.1]: at Function.Module._resolveFilename (module.js:337:15)
2015-11-10T04:51:50.436762+00:00 app[web.1]: at Object.Module._extensions..js (module.js:432:10)
2015-11-10T04:51:50.436764+00:00 app[web.1]: at Function.Module.runMain (module.js:457:10)
2015-11-10T04:51:50.436760+00:00 app[web.1]: at require (module.js:385:17)
2015-11-10T04:51:50.436760+00:00 app[web.1]: at Object.<anonymous> (/app/app.js:6:18)
2015-11-10T04:51:50.436762+00:00 app[web.1]: at Module.load (module.js:356:32)
2015-11-10T04:51:51.157210+00:00 heroku[web.1]: Process exited with status 1
2015-11-10T04:51:52.735586+00:00 heroku[web.1]: Starting process with command `node app.js`
2015-11-10T04:51:55.545983+00:00 app[web.1]: module.js:339
2015-11-10T04:51:55.545998+00:00 app[web.1]: throw err;
2015-11-10T04:51:55.545999+00:00 app[web.1]: ^
2015-11-10T04:51:55.545999+00:00 app[web.1]:
2015-11-10T04:51:55.546001+00:00 app[web.1]: Error: Cannot find module 'express3-handlebars'
2015-11-10T04:51:55.546002+00:00 app[web.1]: at Function.Module._resolveFilename (module.js:337:15)
2015-11-10T04:51:55.546002+00:00 app[web.1]: at Function.Module._load (module.js:287:25)
2015-11-10T04:51:55.546003+00:00 app[web.1]: at Module.require (module.js:366:17)
2015-11-10T04:51:55.546003+00:00 app[web.1]: at require (module.js:385:17)
2015-11-10T04:51:55.546004+00:00 app[web.1]: at Object.<anonymous> (/app/app.js:6:18)
2015-11-10T04:51:55.546004+00:00 app[web.1]: at Module._compile (module.js:425:26)
2015-11-10T04:51:55.546005+00:00 app[web.1]: at Object.Module._extensions..js (module.js:432:10)
2015-11-10T04:51:55.546006+00:00 app[web.1]: at Module.load (module.js:356:32)
2015-11-10T04:51:55.546007+00:00 app[web.1]: at Function.Module.runMain (module.js:457:10)
2015-11-10T04:51:55.546006+00:00 app[web.1]: at Function.Module._load (module.js:311:12)
2015-11-10T04:51:51.172084+00:00 heroku[web.1]: State changed from starting to crashed
2015-11-10T04:51:51.173050+00:00 heroku[web.1]: State changed from crashed to starting
2015-11-10T04:51:56.492216+00:00 heroku[web.1]: Process exited with status 1
2015-11-10T04:51:56.506380+00:00 heroku[web.1]: State changed from starting to crashed
2015-11-10T04:53:27.766915+00:00 heroku[api]: Deploy 15c64ba by myemail@gmail.com
2015-11-10T04:53:27.766915+00:00 heroku[api]: Release v8 created by myemail@gmail.com
2015-11-10T04:53:27.910792+00:00 heroku[slug-compiler]: Slug compilation started
2015-11-10T04:53:27.910801+00:00 heroku[slug-compiler]: Slug compilation finished
2015-11-10T04:53:27.921730+00:00 heroku[web.1]: State changed from crashed to starting
2015-11-10T04:53:29.221014+00:00 heroku[web.1]: Starting process with command `node app.js`
2015-11-10T04:53:31.264123+00:00 app[web.1]: module.js:339
2015-11-10T04:53:31.264132+00:00 app[web.1]: throw err;
2015-11-10T04:53:31.264133+00:00 app[web.1]: ^
2015-11-10T04:53:31.264134+00:00 app[web.1]:
2015-11-10T04:53:31.264135+00:00 app[web.1]: Error: Cannot find module 'express3-handlebars'
2015-11-10T04:53:31.264136+00:00 app[web.1]: at Function.Module._resolveFilename (module.js:337:15)
2015-11-10T04:53:31.264136+00:00 app[web.1]: at Function.Module._load (module.js:287:25)
2015-11-10T04:53:31.264137+00:00 app[web.1]: at Module.require (module.js:366:17)
2015-11-10T04:53:31.264138+00:00 app[web.1]: at require (module.js:385:17)
2015-11-10T04:53:31.264138+00:00 app[web.1]: at Object.<anonymous> (/app/app.js:6:18)
2015-11-10T04:53:31.264139+00:00 app[web.1]: at Module._compile (module.js:425:26)
2015-11-10T04:53:31.264140+00:00 app[web.1]: at Object.Module._extensions..js (module.js:432:10)
2015-11-10T04:53:31.264140+00:00 app[web.1]: at Module.load (module.js:356:32)
2015-11-10T04:53:31.264141+00:00 app[web.1]: at Function.Module._load (module.js:311:12)
2015-11-10T04:53:31.264141+00:00 app[web.1]: at Function.Module.runMain (module.js:457:10)
2015-11-10T04:53:31.969583+00:00 heroku[web.1]: Process exited with status 1
2015-11-10T04:53:31.989169+00:00 heroku[web.1]: State changed from starting to crashed
2015-11-10T04:54:44.812224+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=compasss.herokuapp.com request_id=a508a64d-8a85-4d09-a610-67ef57854186 fwd="138.110.234.184" dyno= connect= service= status=503 bytes=
2015-11-10T04:54:45.733283+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=compasss.herokuapp.com request_id=1a312b38-8793-41fa-9a77-2d2e7f0c63f2 fwd="138.110.234.184" dyno= connect= service= status=503 bytes=
2015-11-10T04:54:45.461863+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=compasss.herokuapp.com request_id=47d48dc9-3e16-4b49-8b25-7b56a8b3ccad fwd="138.110.234.184" dyno= connect= service= status=503 bytes=
我认为错误可能是由于我设置路线的方式。这是我的app.js，我在其中指定了我的路线：
var express = require('express');
var app = express();
var http = require('http').Server(app);
// set up handlebars view engine
var handlebars = require('express3-handlebars')
.create( defaultLayout:'main' );
app.engine('handlebars', handlebars.engine);
app.set('view engine', 'handlebars');
http.listen(process.env.PORT || 3000, function()
console.log('listening on', http.address().port);
)
// Home Page
app.get('/', function(req, res)
res.render('home');
);
// About Page
app.get('/about', function(req, res)
res.render('about');
);
// 404 catch-all handler (middleware)
app.use(function(req, res)
res.status(404);
res.render('404');
);
// 500 error handler (middleware)
app.use(function(req, res)
console.error(err.stack);
res.status(500);
res.render('500');
);
app.listen(app.get('port'), function()
console.log( 'Express started on http://localhost:' +
app.get('port') + '; press Ctrl-C to terminate.' );
);
这是我的package.json：
"name": "Compass",
"version": "1.0.0",
"description": "Independent Study Application",
"main": "app.js",
"scripts":
"test": "echo \"Error: no test specified\" && exit 1",
"start": "node app.js"
,
"author": "Thao Bach",
"license": "ISC",
"dependencies":
"express": "^4.13.3",
"express-handlebars": "^2.0.1",
"mongodb": "^2.0.46",
"monk": "^1.0.1"
,
"devDependencies":
"archiver": "^0.15.1",
"chai": "^3.3.0",
"fs-extra": "^0.24.0",
"mocha": "^2.3.3"
【问题讨论】：
你能显示你的 package.json 吗？ 【参考方案1】：您很可能没有在您的package.json 中提到 npm 依赖项 express3-handlebars，否则它在您的 package.json 文件中被称为开发依赖项。
另外，在您正在使用的 app.js 中
var handlebars = require('express3-handlebars')
.create( defaultLayout:'main' );
您可能希望将您的 require 语句更改为指向 express-handlebars 或将 express3-handlebars 包含为依赖项
【讨论】：
本地运行为什么不报错？另外，我如何包含 express3-handlebars？除了“express-handlebars”之外，我还应该添加它：“^2.0.1”吗？ 你可能不小心在本地机器上安装了全局或只是在你的应用程序文件夹中，而没有在你的 package.json 中将其标记为依赖项 我将 require('express3-handlebars') 更改为 require('express-handlebars')，它成功了！谢谢！以上是关于将 Node.js 应用程序部署到 Heroku 的应用程序错误的主要内容，如果未能解决你的问题，请参考以下文章
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