Sbt程序集在JAR内包含Conf文件 [英] Sbt Assembly Include Conf Files inside the JAR

问题描述

我正在使用sbt程序集插件创建一个JAR文件，并且具有以下文件夹结构:

I'm using the sbt assembly plugin to create a JAR file and I have the following folder structure:

src
 -main
  -scala
  -resources
    -application.conf

现在，当我这样做

sbt clean assembly

我可以在产生的Jar文件中看到包含application.conf文件.我有两个问题:

I can see in the produced Jar file that the application.conf file is included. I have two questions:

1. 为什么包含的application.conf不在最终Jar中的resources文件夹中，而是位于顶层，如下所示(Jar的内容)

1. Why is the inluded application.conf not inside the resources folder in the final Jar, but rather it is on the top level as shown below (the contents of the Jar)

-rw-r--r-- 1 joe staff 272B 5月16日21:03 application.conf drwxr-xr-x 3 joe staff 102B 5月16日21:03 com/ -rw-r--r-- 1 joe staff 187B 2016年3月4日library.properties drwxr-xr-x 3 joe staff 102B 5月16日21:03 typesafe/

-rw-r--r-- 1 joe staff 272B May 16 21:03 application.conf drwxr-xr-x 3 joe staff 102B May 16 21:03 com/ -rw-r--r-- 1 joe staff 187B Mar 4 2016 library.properties drwxr-xr-x 3 joe staff 102B May 16 21:03 typesafe/

如何通过设置System.property加载此application.conf?例如，我希望能够通过设置系统属性来加载application.conf:

How can I load this application.conf by setting a System.property? For example., I want to be able to load the application.conf by setting a System property like:

System.setProperty("config.file"，"application.default.conf")

System.setProperty("config.file", "application.default.conf")

有了这个，我可以从外部(运行jar文件的同时)控制要使用的配置文件.当我尝试此操作时，我收到了NulPointerException:

With this I could control from outside (while running the jar file), which config file to use. When I tried this, I got a NulPointerException:

val someConfigFile = Option(System.getProperty("config.file"))
ConfigFactory.parseURL(getClass.getResource(someConfigFile.get)) // NullPointerException happens here...

推荐答案

第一个问题的答案是资源文件夹就像src文件夹一样，因此内容被复制，而不是文件夹本身.

The answer to your first question is that the resources folder is like a src folder and so the content is copied, not the folder itself.

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