Node.js：设置环境变量 [英] Node.js: Setting Environment Variables

问题描述

我有几种方法来加载凭据。

1. 从环境变量加载


2. 从磁盘上的JSON文件加载

密钥需要如下：

  USER_ID，USER_KEY 
  

...这意味着如果您正确设置了环境变量，则无需在应用程序中管理凭据。

根据一些Google搜索，看来我需要在 process.env 中设置变量？如何和在哪里设置这些凭据？示例请。

解决方案

环境变量（在这种情况下）正用于将凭据传递给您的应用程序。 USER_ID 和 USER_KEY 都可以从 process.env.USER_ID 和 process.env.USER_KEY 。您不需要编辑它们，只需访问其内容。

看起来他们只是在加载 USER_ID 和 USER_KEY 从 process.env 或磁盘上的某个特定文件。

现在，运行应用程序时会发生魔法。

USER_ID = 239482 USER_KEY = foobar node app.js

这将传递用户ID 239482 和用户密钥为 foobar 。这适用于测试，但是对于生产，您可能会配置一些bash脚本来导出变量。

I'm trying to follow a tutorial and it says:

"There are a few ways to load credentials.

1. Loaded from environment variables,
2. Loaded from a JSON file on disk,

The keys need to be as follows:

USER_ID, USER_KEY

...This means that if you properly set your environment variables, you do not need to manage credentials in your application at all."

Based on some Googling, it appears that I need to set the variables in process.env? How and where do I set these credentials? Example Please.

解决方案

Environment variables (in this case) are being used to pass credentials to your application. USER_ID and USER_KEY can both be accessed from process.env.USER_ID and process.env.USER_KEY respectively. You don't need to edit them, just access their contents.

It looks like they are simply giving you the choice between loading your USER_ID and USER_KEY from either process.env or some specificed file on disk.

Now, the magic happens when you run the application.

USER_ID=239482 USER_KEY=foobar node app.js

That will pass the user id 239482 and the user key as foobar. This is suitable for testing, however for production, you will probably be configuring some bash scripts to export variables.

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