在使用Heroku进行部署但仍然获得应用程序错误时,Reactjs应用程序构建成功

时间:2017-07-30 17:37:21

标签: node.js reactjs heroku deployment package.json

我在使用Heroku成功运行React应用程序时遇到了一些麻烦。 它正在成功构建,但在访问URL时我会收到Application Error通知。

我想知道你可以帮忙吗?我已经找到了问题的答案,但没有运气。

以下是有关该应用程序的一些信息 我使用create-react-app命令构建了一个应用程序。

我在计算机上运行Node v6.10.2。

要部署应用程序,我从项目文件夹中输入了以下命令:

npm run build

(这创建了一个" build"文件夹。)

然后我输入了以下命令:

cd build

我创建了一个package.json文件(对于build文件夹),因为没有。

{
  "name": "alien_relatives",
"version": "0.1.0",
"private": true,

"dependencies": {
"classnames": "^2.2.5",  
"react": "^15.6.1",
"react-dom": "^15.6.1"
  },

"devDependencies": {  
"react-scripts": "1.0.10"
  },
 "scripts": {
    "start": "react-scripts start",
"build": "react-scripts build", 
"test": "react-scripts test --env=jsdom",
"eject": "react-scripts eject"
  }
}

在构建文件夹中,我运行了以下命令。

git init
git add .
git commit -m "all files"

heroku create alienrelatives
git push heroku master

以下内容输出到控制台:

remote: Compressing source files... done.
remote: Building source:
remote:
remote: -----> Node.js app detected
remote:
remote: -----> Creating runtime environment
remote:
remote:        NPM_CONFIG_LOGLEVEL=error
remote:        NPM_CONFIG_PRODUCTION=true
remote:        NODE_VERBOSE=false
remote:        NODE_ENV=production
remote:        NODE_MODULES_CACHE=true
remote:
remote: -----> Installing binaries
remote:        engines.node (package.json):  unspecified
remote:        engines.npm (package.json):   unspecified (use default)
remote:
remote:        Resolving node version 6.x...
remote:        Downloading and installing node 6.11.1...
remote:        Using default npm version: 3.10.10
remote:
remote: -----> Restoring cache
remote:        Skipping cache restore (new-signature)
remote:
remote: -----> Building dependencies
remote:        Installing node modules (package.json)
remote:        alien_relatives@0.1.0 /tmp/build_e0b8b2ea1ffb5d7006e8f910f2683e47

remote:        +-- classnames@2.2.5
remote:        +-- react@15.6.1
remote:        ¦ +-- create-react-class@15.6.0
remote:        ¦ +-- fbjs@0.8.14
remote:        ¦ ¦ +-- core-js@1.2.7
remote:        ¦ ¦ +-- isomorphic-fetch@2.2.1
remote:        ¦ ¦ ¦ +-- node-fetch@1.7.1
remote:        ¦ ¦ ¦ ¦ +-- encoding@0.1.12
remote:        ¦ ¦ ¦ ¦ ¦ +-- iconv-lite@0.4.18
remote:        ¦ ¦ ¦ ¦ +-- is-stream@1.1.0
remote:        ¦ ¦ ¦ +-- whatwg-fetch@2.0.3
remote:        ¦ ¦ +-- promise@7.3.1
remote:        ¦ ¦ ¦ +-- asap@2.0.6
remote:        ¦ ¦ +-- setimmediate@1.0.5
remote:        ¦ ¦ +-- ua-parser-js@0.7.14
remote:        ¦ +-- loose-envify@1.3.1
remote:        ¦ ¦ +-- js-tokens@3.0.2
remote:        ¦ +-- object-assign@4.1.1
remote:        ¦ +-- prop-types@15.5.10
remote:        +-- react-dom@15.6.1
remote:
remote:
remote: -----> Caching build
remote:        Clearing previous node cache
remote:        Saving 2 cacheDirectories (default):
remote:        - node_modules
remote:        - bower_components (nothing to cache)
remote:
remote: -----> Build succeeded!
remote: -----> Discovering process types
remote:        Procfile declares types     -> (none)
remote:        Default types for buildpack -> web
remote:
remote: -----> Compressing...
remote:        Done: 16.7M
remote: -----> Launching...
remote:        Released v4
remote:        https://alienrelatives.herokuapp.com/ deployed to Heroku
remote:
remote: Verifying deploy... done.
To https://git.heroku.com/alienrelatives.git
   caf3245..11c44c2  master -> master

但是,当我访问网址时,它说

Application error
An error occurred in the application and your page could not be served. 
If you are the application owner, check your logs for details.

当我在浏览器中打开开发人员工具时,我在控制台中看到了这一点:

(unknown) Uncaught DOMException: Blocked a frame with origin "https://www.herokucdn.com" from accessing a cross-origin frame.

at <anonymous>:1:15

Failed to load resource: the server responded with a status of 503 (Service Unavailable) /favicon.ico

3 个答案:

答案 0 :(得分:0)

我联系了Heroku的支持,我把它分类了,所以这里的答案是:

要部署使用create-react-app命令创建的应用程序(在Heroku上),您需要使用自定义buildpack,而不是标准的Node.js。

有关详细信息,请参阅:https://github.com/mars/create-react-app-buildpack#quick-start

所以我需要运行以下命令(在我的项目文件夹中)以设置新的buildpack,然后再次将我的项目推送到heroku:

heroku buildpacks:set https://github.com/mars/create-react-app-buildpack.git

git push heroku master

答案 1 :(得分:0)

在我找了一天搜索这个之后,所以我终于找到了这个create-react-app-buildpack,所以你必须在你的终端做到这一点: -

  1. 如果您已有应用程序,请转到您的应用程序文件并运行此命令: heroku buildpacks:set https://github.com/mars/create-react-app-buildpack.git
  2. 然后提交你喜欢的内容:git commit -am "create-react-buildpack
  3. 然后推送到您的Heroku仓库git push heroku master
  4. 之后您需要在heroku中重新启动dynos,因此请在终端heroku restart然后heroku open
  5. 中运行此命令

答案 2 :(得分:-1)

清晰简洁的 video 解释,使用 Heroku 的“设置”下的 Builpack 功能完美解决您的问题。

https://www.youtube.com/watch?v=tA4Fl1dZgjc
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