在build.sbt中解析外部文件中的属性

Question

我的project/build.sbt

libraryDependencies += "com.typesafe" % "config" % "1.2.1"

我的application.properties (在项目根目录下)：

key=value

我的根build.sbt

import com.typesafe.config.ConfigFactory

val projectName = "ai"
name := projectName

val projectVersion = "1.0.0"
version := projectVersion

scalaVersion := "2.11.7"

libraryDependencies ++= List(
    "org.scala-lang" % "scala-swing" % "2.11.0-M7",
    "org.reflections" % "reflections" % "0.9.10",
    "io.reactivex" % "rxscala_2.11" % "0.25.0",
    "com.github.tototoshi" %% "scala-csv" % "1.2.2",
    "com.jsuereth" %% "scala-arm" % "1.4"
)

val conf = ConfigFactory.load()

assemblyOutputPath in assembly := new  File(s"target/${conf.getString("key")}-$projectVersion.jar")

当我在SBT控制台中运行assembly时，我得到[error] (*:assembly::assemblyOutputPath) com.typesafe.config.ConfigException$Missing: No configuration setting found for key 'key'

Answer 1

你把key=value放到application.conf里了吗？只需在application.conf内定义键，因为它会搜索application.conf内的键值，如下例所示

                  key="file_name"