scala 使用 Akka 构建 sbt 需要什么？
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What's required to have sbt build with Akka?
提问by CruncherBigData
I am trying to use scala -akka from sbt.
我正在尝试使用 sbt 的 scala -akka。
My sbt file looks as follows:
我的 sbt 文件如下所示：
name := "hello"
version := "1.0"
scalaVersion := "2.9.1"
resolvers += "akka" at "http://repo.akka.io/snapshots"
libraryDependencies ++= Seq(
"com.codahale" % "simplespec_2.9.0-1" % "0.4.1",
"com.typesafe.akka" % "akka-stm" % "2.0-SNAPSHOT"
)
my code:
我的代码：
import akka._
object HelloWorld {
def main(args: Array[String]) {
println("Hello, world!")
}
}
When I do sbt compile, I get
当我这样做时sbt compile，我得到
]# **sbt compile**
[info] Set current project to default-91c48b (in build file:/var/storage1/home/test_user/dev_scala/hello/)
[info] Compiling 1 Scala source to /var/storage1/home/test_user/dev_scala/hello/target/scala-2.9.2/classes...
[error] /var/storage1/home/test_user/dev_scala/hello/src/main/scala/hw.scala:3: not found: object akka
[error] import akka._
[error] ^
[error] one error found
[error] (compile:compile) Compilation failed
[error] Total time: 3 s, completed May 22, 2013 8:59:08 PM
Please advice.
请指教。
EDIT2: based on comments bellow. here is the new sbt file
EDIT2：基于下面的评论。这是新的 sbt 文件
name := "hello"
version := "1.0"
scalaVersion := "2.9.1"
resolvers += "akka" at "http://repo.akka.io/snapshots"
libraryDependencies ++= Seq(
"com.typesafe.akka" %% "akka-actor" % "2.1.4",
"com.codahale" % "simplespec_2.9.0-1" % "0.4.1",
"com.typesafe.akka" % "akka-stm" % "2.0-SNAPSHOT" ,
"com.typesafe.akka" %% "akka-actor" % "2.2-M3",
"com.typesafe.akka" %% "akka-slf4j" % "2.2-M3",
"com.typesafe.akka" %% "akka-remote" % "2.2-M3",
"com.typesafe.akka" %% "akka-testkit" % "2.2-M3"% "test"
)
any ideas ?
有任何想法吗 ？
回答by 4lex1v
You didn't have all right dependencies for your project.
您的项目没有所有正确的依赖项。
You have add this one "com.typesafe.akka" %% "akka-actor" % "2.0.5". This one is the main dependency with the core modules for akka. Also it's better to add the following ones for your akka project:
你已经添加了这个"com.typesafe.akka" %% "akka-actor" % "2.0.5"。这是 akka 核心模块的主要依赖项。此外，最好为您的 akka 项目添加以下内容：
"com.typesafe.akka" %% "akka-actor" % "2.0.5",
"com.typesafe.akka" %% "akka-slf4j" % "2.0.5",
"com.typesafe.akka" %% "akka-remote" % "2.0.5",
"com.typesafe.akka" %% "akka-agent" % "2.0.5",
"com.typesafe.akka" %% "akka-testkit" % "2.0.5"% "test"
And to use actors you should import akka.actor._
要使用演员，您应该导入 akka.actor._
Updated
更新
Ok, this build file works for me
好的，这个构建文件对我有用
name := "hello"
version := "1.0"
scalaVersion := "2.10.1"
libraryDependencies ++= Seq(
"com.typesafe.akka" %% "akka-actor" % "2.2-M3",
"com.typesafe.akka" %% "akka-slf4j" % "2.2-M3",
"com.typesafe.akka" %% "akka-remote" % "2.2-M3",
"com.typesafe.akka" %% "akka-agent" % "2.2-M3",
"com.typesafe.akka" %% "akka-testkit" % "2.2-M3" % "test"
)
Don't forget to reloadand updateyour project in sbt
不要忘记reload和update你的项目在 sbt
回答by JasonG
Your akka-actor dependency absolutely CAN NOT be a different version than your other dependencies. And any dependencies you add absolutely CAN NOT be reliant on different versions of akka either or you'll have a very messed up dependency tree.
您的 akka-actor 依赖项绝对不能是与其他依赖项不同的版本。并且您添加的任何依赖项绝对不能依赖于不同版本的 akka，否则您将拥有一个非常混乱的依赖项树。
And you may as well use current versions if you're starting out. Coltrane 2.2-M3 is current at time of writing.
如果您刚开始，您也可以使用当前版本。Coltrane 2.2-M3 在撰写本文时是最新的。
You can add some more akka libs as needed... But this is a basic starting point based on a real project that we run in prod:
您可以根据需要添加更多 akka 库...但这是基于我们在 prod 中运行的真实项目的基本起点：
name := "app"
organization := "com.yourorg"
version := "0.0.1-SNAPSHOT"
scalaVersion := "2.10.1"
scalacOptions ++= Seq("-unchecked", "-deprecation")
resolvers ++= Seq(
"Typesafe Repository" at "http://repo.typesafe.com/typesafe/releases/"
)
libraryDependencies ++= Seq(
"com.typesafe.akka" %% "akka-actor" % "2.2-M3",
"com.typesafe.akka" %% "akka-slf4j" % "2.2-M3",
"com.typesafe.akka" %% "akka-testkit" % "2.2-M3"
)
回答by snukone
UPDATED ON 24.03.2019
2019 年 3 月 24 日更新
To use Akka Actors you need the following dependencies:
要使用 Akka Actors，您需要以下依赖项：
For sbt:
对于 sbt：
libraryDependencies ++= Seq(
"com.typesafe.akka" %% "akka-actor" % "2.5.21",
"com.typesafe.akka" %% "akka-testkit" % "2.5.21" % Test
)
For Gradle:
对于摇篮：
dependencies {
compile group: 'com.typesafe.akka', name: 'akka-actor_2.12', version: '2.5.21'
testCompile group: 'com.typesafe.akka', name: 'akka-testkit_2.12', version: '2.5.21'
}
For Maven:
对于 Maven：
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-actor_2.12</artifactId>
<version>2.5.21</version>
</dependency>
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-testkit_2.12</artifactId>
<version>2.5.21</version>
<scope>test</scope>
</dependency>
For more Informations and Dependency-Codesnippets regarding Akka Cluster, Akka Streams, Akka Http, Alpakka etc check: https://akka.io/docs/
有关 Akka Cluster、Akka Streams、Akka Http、Alpakka 等的更多信息和依赖代码片段，请查看：https://akka.io/docs/
