怎么在drogon().app().run() 传递一个自定义全局参数，然后在每个controller层都能获取改参数变量进行其他操作呢？

[18871434218]

Notice If you need support or clarification regarding the usage of Drogon in your project, visit the official Drogon support channel at gitter

Please create a new issue only if you think you have found a bug or if have a feature request/enhancement.

Describe the bug A clear and concise description of what the bug is.

To Reproduce Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior A clear and concise description of what you expected to happen.

Screenshots If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context Add any other context about the problem here.

[hwc0919]

为何需要用 app.run() 传递？ 直接定义一个全局变量就可以了