NodeJS应用程序使用Heroku构建,但显示应用程序错误 [英] NodeJS app builds with Heroku, but it shows application error
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问题描述
我正在设置NodeJS Heroku应用程序。我只希望一个空的应用程序启动并运行。
我的目录包含package.json和一个app.js文件。
Heroku应用程序的构建没有错误,但是我只是在URL上看到一个应用程序错误页面(
< img src = https://i.stack.imgur.com/x0NxC.png alt =在此处输入图片描述>
I am setting up a NodeJS Heroku app. I just want an empty app up and running.
My dir includes a package.json and an app.js file.
The Heroku app builds without errors, but then I just get an "application error"-page on the URL (https://nameless-wave-98692.herokuapp.com/).
As far as I can see, everything looks good in the logs:
-----> Node.js app detected
-----> Creating runtime environment
NPM_CONFIG_LOGLEVEL=error
NPM_CONFIG_PRODUCTION=true
NODE_ENV=production
NODE_MODULES_CACHE=true
-----> Installing binaries
engines.node (package.json): 6.9.2
engines.npm (package.json): unspecified (use default)
Downloading and installing node 6.9.2...
Using default npm version: 3.10.9
-----> Restoring cache
Loading 2 from cacheDirectories (default):
- node_modules
- bower_components (not cached - skipping)
-----> Building dependencies
Installing node modules (package.json)
-----> Caching build
Clearing previous node cache
Saving 2 cacheDirectories (default):
- node_modules
- bower_components (nothing to cache)
-----> Build succeeded!
└── (empty)
! This app may not specify any way to start a node process
https://devcenter.heroku.com/articles/nodejs-support#default-web-process-type
-----> Discovering process types
Procfile declares types -> (none)
Default types for buildpack -> web
-----> Compressing...
Done: 13.4M
-----> Launching...
Released v4
https://nameless-wave-98692.herokuapp.com/ deployed to Heroku
Do you see any problems? Am I doing something wrong?
解决方案
Maybe you need file Procfile
web: node app.js
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