使用可运行的jar运行Akka

Question

我正在尝试使用NetBeans在Java
Maven项目中实现Akka。当我从NetBeans运行它时，它运行良好，但是当我从NetBeans运行可运行的jar时，它会产生错误。

Exception in thread "main" com.typesafe.config.ConfigException$Missing: No configuration setting found for key 'akka.remote.log-received-messages'

当我在配置中添加日志接收消息时，它要求其他配置。这是我用来生成jar文件的插件。

<plugin>
        <artifactId>maven-assembly-plugin</artifactId>
</plugin>

我的依赖是

    <dependency>
        <groupId>com.typesafe.akka</groupId> 
        <artifactId>akka-actor_2.10</artifactId> 
        <version>2.3.7</version> 
    </dependency>
    <dependency>
        <groupId>com.typesafe.akka</groupId>
        <artifactId>akka-remote_2.10</artifactId>
        <version>2.3.7</version>
    </dependency>

akka的配置是

akka10300{
akka{
    actor{provider = "akka.remote.RemoteActorRefProvider"}
    remote {
    enabled-transports = ["akka.remote.netty.tcp"]
        netty.tcp {
            hostname="127.0.0.1"
            port=10300
        }
    }
}
}

Answer 1

在http://doc.akka.io/docs/akka/snapshot/general/configuration.html上有关于从“胖罐”运行Akka的警告。问题是存在多个reference.conf配置文件，并且Maven程序集或shade插件的默认行为是用较新的实例覆盖较早的配置文件实例。

要解决此问题，建议的方法是使用Maven
shade插件生成可执行jar，并将其配置为将所有resource.conf文件附加到单个文件中，而不是覆盖。建议的Maven阴影插件配置如下所示：

<plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-shade-plugin</artifactId>
 <version>1.5</version>
 <executions>
  <execution>
   <phase>package</phase>
   <goals>
    <goal>shade</goal>
   </goals>
   <configuration>
    <shadedArtifactAttached>true</shadedArtifactAttached>
    <shadedClassifierName>allinone</shadedClassifierName>
    <artifactSet>
     <includes>
      <include>*:*</include>
     </includes>
    </artifactSet>
    <transformers>
      <transformer
       implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
       <resource>reference.conf</resource>
      </transformer>
      <transformer
       implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
       <manifestEntries>
        <Main-Class>akka.Main</Main-Class>
       </manifestEntries>
      </transformer>
    </transformers>
   </configuration>
  </execution>
 </executions>
</plugin>