Question

在我的application.conf文件中，我有类似

的内容

platform3.operational.state = "development"

我用

运行我的服务

sbt "project p3-s-sink" "run -Dplatform3.operational.state=test"

但配置属性仍然是“开发”

如何覆盖typesafe-config设置？

Answer 1

来自ConfigFactory.systemProperties（）的JavaDoc [ConfigFactory.java]：

 * Gets a <code>Config</code> containing the system properties from
 * {@link java.lang.System#getProperties()}, parsed and converted as with
 * {@link #parseProperties}.
 * <p>
 * This method can return a global immutable singleton, so it's preferred
 * over parsing system properties yourself.
 * <p>
 * {@link #load} will include the system properties as overrides already, as
 * will {@link #defaultReference} and {@link #defaultOverrides}.
 *
 * <p>
 * Because this returns a singleton, it will not notice changes to system
 * properties made after the first time this method is called. Use
 * {@link #invalidateCaches()} to force the singleton to reload if you
 * modify system properties.
 *
 * @return system properties parsed into a <code>Config</code>

注意中段：＆＃34; load将系统属性包含为override，defaultReference和defaultOverrides＆＃34;。

直接执行时它是否按预期工作？

Answer 2

也许这个博客可以帮助你：

不幸的是，sbt run不支持java系统属性，因此在运行sbt时无法使用命令行调整设置。 sbt-revolver插件允许您在分叉的JVM中运行应用程序，它允许您使用命令行传递java参数。

http://blog.michaelhamrah.com/2014/02/leveraging-typesafes-config-library-across-environments/

如何覆盖Typesafe配置设置？

2 个答案: