找不到键"akka.version"的配置设置 [英] No configuration setting found for key 'akka.version'
本文介绍了找不到键"akka.version"的配置设置的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在学习akka远程处理，这就是我的项目外观
I am learning akka-remoting and this is how my project looks
项目结构类似于
project/pom.xml
project/mymodule/pom.xml
project/mymodule/src/main/resources/application.conf
project/mymodule/src/main/scala/com.harit.akkaio.remote.RemoteApp.scala
project/mymodule/src/main/scala/com.harit.akkaio.remote.ProcessingActor.scala
当我在command-line上运行项目时，我看到
When I run my project on command-line, I see
$ java -jar akkaio-remote/target/akka-remote-jar-with-dependencies.jar com.harit.akkaio.remote.RemoteApp
Hello:com.harit.akkaio.remote.RemoteApp
Exception in thread "main" com.typesafe.config.ConfigException$Missing: No configuration setting found for key 'akka.version'
at com.typesafe.config.impl.SimpleConfig.findKey(SimpleConfig.java:124)
at com.typesafe.config.impl.SimpleConfig.find(SimpleConfig.java:145)
at com.typesafe.config.impl.SimpleConfig.find(SimpleConfig.java:151)
at com.typesafe.config.impl.SimpleConfig.find(SimpleConfig.java:159)
at com.typesafe.config.impl.SimpleConfig.find(SimpleConfig.java:164)
at com.typesafe.config.impl.SimpleConfig.getString(SimpleConfig.java:206)
at akka.actor.ActorSystem$Settings.<init>(ActorSystem.scala:169)
at akka.actor.ActorSystemImpl.<init>(ActorSystem.scala:505)
at akka.actor.ActorSystem$.apply(ActorSystem.scala:142)
at akka.actor.ActorSystem$.apply(ActorSystem.scala:119)
at com.harit.akkaio.remote.RemoteApp$.startProcessingActorSystem(RemoteApp.scala:16)
at com.harit.akkaio.remote.RemoteApp$.main(RemoteApp.scala:12)
at com.harit.akkaio.remote.RemoteApp.main(RemoteApp.scala)
RemoteApp.scala
package com.harit.akkaio.remote
import akka.actor.{ActorRef, ActorSystem, Props}
import com.typesafe.config.ConfigFactory
import scala.concurrent.duration._
object RemoteApp {
def main(args: Array[String]): Unit = {
println("Hello:" + args.head)
startProcessingActorSystem()
}
def startProcessingActorSystem() = {
val system = ActorSystem("ProcessingSystem", ConfigFactory.load())
println("ProcessingActorSystem Started")
}
}
ProcessingActor.scala
package com.harit.akkaio.remote
import akka.actor.{Actor, ActorLogging}
case object Process
case object Crash
class ProcessingActor extends Actor with ActorLogging {
def receive = {
case Process => log.info("processing big things")
case Crash => log.info("crashing the system")
context.stop(self)
}
}
application.conf
akka {
remote.netty.tcp.port = 2552
}
mymodule.pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>akkaio</artifactId>
<groupId>com.harit</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>akkaio-remote</artifactId>
<properties>
<akka-remote_2.11.version>2.3.11</akka-remote_2.11.version>
</properties>
<dependencies>
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-remote_2.11</artifactId>
<version>${akka-remote_2.11.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<finalName>akka-remote</finalName>
<archive>
<manifest>
<mainClass>com.harit.akkaio.remote.RemoteApp</mainClass>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
<executions>
<execution>
<id>make-assembly</id> <!-- this is used for inheritance merges -->
<phase>package</phase> <!-- bind to the packaging phase -->
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.harit</groupId>
<artifactId>akkaio</artifactId>
<version>1.0-SNAPSHOT</version>
<modules>
<module>akkaio-remote</module>
</modules>
<packaging>pom</packaging>
<inceptionYear>2015</inceptionYear>
<properties>
<scala.version>2.11.6</scala.version>
<junit.version>4.12</junit.version>
<scalatest_2.11.version>2.2.5</scalatest_2.11.version>
<akka-actor_2.11.version>2.3.11</akka-actor_2.11.version>
<akka-slf4j_2.11.version>2.3.11</akka-slf4j_2.11.version>
<akka-testkit_2.11.version>2.3.11</akka-testkit_2.11.version>
<mockito-all.version>1.10.19</mockito-all.version>
<maven-scala-plugin.scalaCompatVersion>2.11.6</maven-scala-plugin.scalaCompatVersion>
<scalatest-maven-plugin.version>1.0</scalatest-maven-plugin.version>
</properties>
<repositories>
<repository>
<id>scala-tools.org</id>
<name>Scala-Tools Maven2 Repository</name>
<url>http://scala-tools.org/repo-releases</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>scala-tools.org</id>
<name>Scala-Tools Maven2 Repository</name>
<url>http://scala-tools.org/repo-releases</url>
</pluginRepository>
</pluginRepositories>
<dependencies>
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-library</artifactId>
<version>${scala.version}</version>
</dependency>
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-actor_2.11</artifactId>
<version>${akka-actor_2.11.version}</version>
</dependency>
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-slf4j_2.11</artifactId>
<version>${akka-slf4j_2.11.version}</version>
</dependency>
<dependency>
<groupId>org.scalatest</groupId>
<artifactId>scalatest-maven-plugin</artifactId>
<version>${scalatest-maven-plugin.version}</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-testkit_2.11</artifactId>
<version>${akka-testkit_2.11.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.scalatest</groupId>
<artifactId>scalatest_2.11</artifactId>
<version>${scalatest_2.11.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<defaultGoal>clean install</defaultGoal>
<plugins>
<plugin>
<groupId>org.scala-tools</groupId>
<artifactId>maven-scala-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>testCompile</goal>
</goals>
</execution>
</executions>
<configuration>
<scalaCompatVersion>${maven-scala-plugin.scalaCompatVersion}</scalaCompatVersion>
<scalaVersion>${scala.version}</scalaVersion>
<scalaVersion>${scala.version}</scalaVersion>
<args>
<arg>-target:jvm-1.8</arg>
</args>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.7</version>
<configuration>
<skipTests>true</skipTests>
</configuration>
</plugin>
<plugin>
<groupId>org.scalatest</groupId>
<artifactId>scalatest-maven-plugin</artifactId>
<version>1.0</version>
<configuration>
<reportsDirectory>${project.build.directory}/surefire-reports</reportsDirectory>
<junitxml>.</junitxml>
<filereports>WDF TestSuite.txt</filereports>
</configuration>
<executions>
<execution>
<id>test</id>
<goals>
<goal>test</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<reporting>
<plugins>
<plugin>
<groupId>org.scala-tools</groupId>
<artifactId>maven-scala-plugin</artifactId>
<configuration>
<scalaVersion>${scala.version}</scalaVersion>
</configuration>
</plugin>
</plugins>
</reporting>
</project>
我错过了什么? 谢谢
推荐答案
似乎您的问题正在捆绑到jar-with-dependencies中，这会导致Akka问题，如
It seems that your problem is bundling into a jar-with-dependencies, which causes problems with Akka, as described in the documentation:
警告
Akka的配置方法在很大程度上依赖于每个模块/jar都有自己的reference.conf文件的概念，所有这些都将在配置中发现并加载.不幸的是，这还意味着，如果您将多个jar放入/合并到同一jar中，则还需要合并所有reference.confs.否则，所有默认设置都将丢失，并且Akka将无法运行.
Akka's configuration approach relies heavily on the notion of every module/jar having its own reference.conf file, all of these will be discovered by the configuration and loaded. Unfortunately this also means that if you put/merge multiple jars into the same jar, you need to merge all the reference.confs as well. Otherwise all defaults will be lost and Akka will not function.
如同一页上的建议，您可以使用maven-shade-plugin合并所有参考配置:
As suggested on the same page, you can use maven-shade-plugin to merge all the reference configurations:
如果您使用Maven打包应用程序，则还可以利用Apache Maven Shade插件对Resource Transformers的支持，将构建类路径上的所有reference.confs合并为一个.
If you are using Maven to package your application, you can also make use of the Apache Maven Shade Plugin support for Resource Transformers to merge all the reference.confs on the build classpath into one.
另请参阅: Akka:缺少akka.version
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