问题

我正在编写一个使用Go语言的应用程序，该程序将值写入文件。

然而，我希望文件的位置在运行时确定（即不作为应用程序代码的一部分设置）。

我已经为应用程序创建了一个测试客户端，我希望客户端告诉应用程序它应该写入哪个文件。

有人可以告诉我如何在Go语言中实现这个功能吗？

谢谢，

Sean

英文:

I'm writing a go application that writes values to a file.

However, I want the location of that file to be determined at runtime (i.e. not set as part of the application code).

I have create a test client for the application and I want the client to tell the application which file it should write to.

Can anyone tell me how I would go about this in Go?

Thanks,

Sean

答案1

得分: 1

如果位置未设置，则需要以某种方式读取它。

英文:

If the location is not set, you'll need to read it in some way.

You might want to read it from a command line flag passed in when running the command. The easiest way to do that is using the flag package.
You could read it from STDIN. The top answer to this question nicely explains how to do that.
You could read it from an environment variable. Check out the Environ function in the os package.

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