无法在heroku上推送node.js应用

Question

我尝试在heroku上推送我的node.js应用程序。无法为此应用检测到默认语言。我什至尝试了heroku buildpacks：set heroku / nodejs。但是仍然无法推动。

 Counting objects: 31, done.
    Delta compression using up to 4 threads.
    Compressing objects: 100% (24/24), done.
    Writing objects: 100% (31/31), 5.37 KiB | 0 bytes/s, done.
    Total 31 (delta 3), reused 0 (delta 0)
    remote: Compressing source files... done.
    remote: Building source:
    remote: 
    remote:  !     No default language could be detected for this app.
    remote:             HINT: This occurs when Heroku cannot detect the buildpack to use for this application automatically.
    remote:             See https://devcenter.heroku.com/articles/buildpacks
    remote: 
    remote:  !     Push failed
    remote: Verifying deploy...
    remote: 
    remote: !   Push rejected to radiant-cliffs-91678.
    remote: 
    To https://git.heroku.com/radiant-cliffs-91678.git
     ! [remote rejected] master -> master (pre-receive hook declined)
    error: failed to push some refs to 'https://git.heroku.com/radiant-cliffs-91678.git'

Answer 1

根据您的日志，似乎Heroku无法检测到您的应用程序的语言。

对于Node.js，您需要package.json在项目的根目录中创建一个文件（使用npm init），或者可以Procfile在项目的根目录中创建一个以指定语言：

web: node index.js