Play Framework 2：阅读Build.scala中定义的应用程序版本 [英] Play Framework 2: Read the application version defined in Build.scala

问题描述

我使用Play Framework 2.0（2.0.3）。
我有一个Java项目，想要阅读Build.scala中定义的应用程序版本（ appVersion ）。

I use the Play Framework 2.0 (2.0.3). I have a Java project and want to read the application version (appVersion) defined in Build.scala.

我已经看到的是，可以从提供给Global.java的 Application 对象中读取某些配置详细信息，但没有找到名为appVersion或类似的键。 。

What I already saw is that it's possible to read certain configuration details from the Application object provided to Global.java, but didn't find a key called appVersion or similar.

推荐答案

您可以在 application.conf 中定义版本并让 Build.scala 读取值。我用版本号和应用程序名称做了这个。以下适用于Play 2.0，有一个更新的 Play 2.1的解决方案。

You can define the version in application.conf and let Build.scala read the value. I did this with the version number and application name. The following works in Play 2.0, there is an updated solution for Play 2.1.

在 project / Build.scala 中，加载配置并获取属性：

In project/Build.scala, load the configuration and get the properties:

val conf = play.api.Configuration.load(new File("."))
val appName    = conf.getString("app.name").getOrElse("unnamed application")
val appVersion = conf.getString("app.version").getOrElse("0.0.0")

在 conf / application.conf 中定义属性：

app.version = 1.0
app.name = My Application

最后在您的应用程序中，它可以通过

Finally in your application it will be accessible with

 Play.application().configuration().getString("app.version")

---

配置语法有很多功能，所以你甚至可以去您的版本或应用程序名称更加疯狂：

---

The configuration syntax has quite some features, so you can even go a little more crazy with your version or application names:

app {
  major    = 1
  minor    = 2
  revision = 3
  version = ${app.major}.${app.minor}.${app.revision}
  name = My Application ${app.major}.${app.minor}
}

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