如何不观看文件以了解 Play Framework 中的更改 [英] How to not watch a file for changes in Play Framework

问题描述

在使用 sbt-buildinfo 创建 的 Play Framework 2.2 项目上BuildInfo.scala 文件编译项目时，如何配置 build.sbt 以使 Play Framework 不会监视 BuildInfo.scala 文件的更改，并且如果该文件发生更改不会重新启动服务器?

例如，如果会话开始于:

$ sbt ~run

并且服务器以开发模式启动，然后在另一个终端窗口中启动另一个 sbt 会话(运行另一个子项目，或者只是运行其他 sbt 任务)，第二个 sbt 会话将更新 BuildInfo.scala 文件，第一个 sbt 会话将检测到这一点并重新加载 Play 项目.>

所以问题是如何从监控中排除BuildInfo.scala(但仍然编译它并将其包含在分发包中).

显然 watchSources 配置选项可以提供帮助，但在阅读文档后我无法弄清楚如何使用它来排除文件.

解决方案

要从被监视的文件中移除特定文件，您可以在 build.sbt 中执行:

watchSources := watchSources.value.filter { _.getName != "BuildInfo.scala" }

我试图重现基本设置，但对我来说 BuildInfo.scala 文件没有被监视.您可以通过发出 show watchSources 来查看观看的源列表.

On a Play Framework 2.2 project that is using sbt-buildinfo to create a BuildInfo.scala file when the project is compiled, how can build.sbt be configured so that Play Framework won't watch the BuildInfo.scala file for changes, and won't restart the server if that file changes?

For instance, if a session is started with:

$ sbt ~run

and the server starts in development mode, and then in another terminal window another sbt session is started (to run another subproject, or just to run other sbt tasks), this second sbt session will update the BuildInfo.scala file, and the first sbt session will detect this and reload the Play project.

So the question is how to exclude BuildInfo.scala from monitoring (but still compile it and include it in the distribution package).

Apparently the watchSources configuration option could help, but after reading the documentation I couldn't figure out how to use it to exclude a file.

解决方案

To remove a particular file from being watched you can do in build.sbt:

watchSources := watchSources.value.filter { _.getName != "BuildInfo.scala" }

I tried to reproduce basic setup, and for me the BuildInfo.scala file is not watched. You can see the list of watched sources by issuing show watchSources.

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