scala 找不到密钥“akka.version”的配置设置
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No configuration setting found for key 'akka.version'
提问by daydreamer
I am learning akka-remoting and this is how my project looks
我正在学习 akka-remoting，这就是我的项目的样子
The project structure looks like
项目结构看起来像
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
When I run my project on command-line, I see
当我运行我的项目时command-line，我看到
$ 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
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
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
应用程序配置文件
akka {
remote.netty.tcp.port = 2552
}
mymodule.pom.xml
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
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>
What am I missing out? Thanks
我错过了什么？谢谢
回答by Zoltán
It seems that your problem is bundling into a jar-with-dependencies, which causes problems with Akka, as described in the documentation:
似乎您的问题捆绑到 a 中jar-with-dependencies，这会导致 Akka 出现问题，如文档中所述：
Warning
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.
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，所有这些都将被配置发现并加载。不幸的是，这也意味着如果您将多个 jars 放入/合并到同一个 jar 中，您还需要合并所有 reference.confs。否则所有默认值都将丢失，Akka 将无法运行。
As suggested on the same page, you can use maven-shade-pluginto merge all the reference configurations:
正如在同一页面上所建议的，您可以使用maven-shade-plugin合并所有参考配置：
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.
如果您使用 Maven 打包您的应用程序，您还可以利用 Apache Maven Shade Plugin 对资源转换器的支持将构建类路径上的所有 reference.confs 合并为一个。
See also: Akka: missing akka.version
另请参阅：Akka：缺少 akka.version
回答by Jan-Terje S?rensen
Had a similar issue:
有一个类似的问题：
com.typesafe.config.ConfigException$Missing:
No configuration setting found for key 'akka.persistence.journal-plugin-fallback'
Solved it with adding an appending transformer:
通过添加附加变压器解决了这个问题：
<plugin>
<artifactId>maven-shade-plugin</artifactId>
<version>2.4.1</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
<resource>reference.conf</resource>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
回答by Sruthi Poddutur
Adding AppendingTransformer alone didn't resolve the issue for me. If you are trying to deploy your spark application on EMR and are still facing this issue then please take a look at my solution here. Hope it helps!
单独添加 AppendingTransformer 并不能解决我的问题。如果您尝试在 EMR 上部署 Spark 应用程序并且仍然面临此问题，请在此处查看我的解决方案。希望能帮助到你！
回答by dharam
I tried this plugin, it is great but leads to another error due to some signed jars. Here is the error:
我试过这个插件，它很棒但是由于一些签名的 jars 导致另一个错误。这是错误：
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.SecurityException: Invalid signature file digest for Manifest main attributes
What I would suggest you to use is the spring boot maven plugin. Just add it to your build and enjoy seamless runnable jars. This is one good reason why I love Spring framework.
我建议您使用的是 spring boot maven 插件。只需将它添加到您的构建中，即可享受无缝的可运行 jars。这是我喜欢 Spring 框架的一个很好的原因。
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
<configuration>
<classifier>final</classifier>
<mainClass>
com.main.PopularHashTags
</mainClass>
</configuration>
</execution>
</executions>
</plugin>
Note: You don't need to have a Spring Boot application to use this plugin. Just use it in any application and it works as a charm.
注意：你不需要有一个 Spring Boot 应用程序来使用这个插件。只需在任何应用程序中使用它，它就会成为一种魅力。
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