[英]“Application Error” when deploying with Heroku for node
我終於設法在本地制作了一個易於運行的客戶端-服務器簡易應用程序(經過數周的嘗試),並且...我嘗試嘗試一下Heroku,所以我的最后一台服務器是如此令人困惑和沮喪。 看來它正在運行,但是...“正常”部署后,網絡顯示“應用程序中發生錯誤,無法提供您的頁面。如果您是應用程序所有者,請檢查日志以了解詳細信息。”。
我發現諸如允許在process.env.PORT上運行,並且不僅修復了8080端口,還修復了相同的錯誤,盡管仍然可以在本地運行。 有什么建議嗎?
部署日志...
-----> Node.js app detected
-----> Creating runtime environment
NPM_CONFIG_LOGLEVEL=error
NODE_VERBOSE=false
NODE_ENV=production
NODE_MODULES_CACHE=true
-----> Installing binaries
engines.node (package.json): unspecified
engines.npm (package.json): unspecified (use default)
Resolving node version 8.x...
Downloading and installing node 8.11.1...
Using default npm version: 5.6.0
-----> Restoring cache
Loading 2 from cacheDirectories (default):
- node_modules
- bower_components (not cached - skipping)
-----> Building dependencies
Installing node modules (package.json + package-lock)
up to date in 3.888s
-----> Caching build
Clearing previous node cache
Saving 2 cacheDirectories (default):
- node_modules
- bower_components (nothing to cache)
-----> Pruning devDependencies
Skipping because npm 5.6.0 sometimes fails when running 'npm prune' due to a known issue
https://github.com/npm/npm/issues/19356
You can silence this warning by updating to at least npm 5.7.1 in your package.json
https://devcenter.heroku.com/articles/nodejs-support#specifying-an-npm-version
-----> Build succeeded!
-----> Discovering process types
Procfile declares types -> (none)
Default types for buildpack -> web
-----> Compressing...
Done: 19.4M
-----> Launching...
Released v5
https://myweb.herokuapp.com/ deployed to Heroku
在JSON文件中,您是否建議您包含“開始”值,這是您希望服務器在啟動時執行的命令。 對於節點,JSON的開始應如下所示:
{
"name": "deploying",
"version": "1.0.0",
"description": "",
"main": "app.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"start": "node app.js"
希望這可以幫助 :)
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