我正在尝试在Akka中读取外部conf /属性文件。
我指的是这个post
我只有一种配置,我需要在myappConfiguration.properties中添加更多属性。我可以看到属性文件可以加载,但无法读取配置。
myappConfiguration.properties 的内容如下。
myconf {
directory : "D:\\Git\\Java_Test_WS\\file.reader\\"
}
我收到了下面的异常,异常显然在告诉类型问题,但是我不明白该写些什么。
Exception in thread "main" com.typesafe.config.ConfigException$WrongType: myappConfiguration.properties: myconf has type STRING rather than OBJECT
at com.typesafe.config.impl.SimpleConfig.findKeyOrNull(SimpleConfig.java:159)
at com.typesafe.config.impl.SimpleConfig.findKey(SimpleConfig.java:145)
at com.typesafe.config.impl.SimpleConfig.findOrNull(SimpleConfig.java:172)
at com.typesafe.config.impl.SimpleConfig.find(SimpleConfig.java:184)
at com.typesafe.config.impl.SimpleConfig.find(SimpleConfig.java:189)
at com.typesafe.config.impl.SimpleConfig.getObject(SimpleConfig.java:258)
at com.typesafe.config.impl.SimpleConfig.getConfig(SimpleConfig.java:264)
at com.typesafe.config.impl.SimpleConfig.getConfig(SimpleConfig.java:37)
at com.myapp.file.reader.AkkaBaseEventReader.main(AkkaBaseEventReader.java:27)
以下是我尝试读取该配置条目的Java代码。我在第27行出现了代码异常:
Config config = system.settings().config().getConfig("myconf.directory");
完整的代码:
public class AkkaBaseEventReader implements ApplicationConstant {
public static void main(String[] args) throws IOException {
System.setProperty("config.file","myappConfiguration.properties");
ActorSystem system = ActorSystemImpl.create("FileReaderForassignment");
final ActorRef reader = system.actorOf(EventScannerActor.props(),"FileReader");
System.out.println(system.settings());
Config config = system.settings().config().getConfig("myconf.directory");
}
}
下面是我的 pom.xml ,它将显示我正在使用的Akka版本:
<properties>
<akka.version>2.4.9</akka.version>
<maven-dependency-plugin.version>3.0.0</maven-dependency-plugin.version>
<maven.compiler.plugin>3.6.1</maven.compiler.plugin>
<java.compiler.target>1.8</java.compiler.target>
<java.compiler.source>1.8</java.compiler.source>
</properties>
<dependencies>
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-actor_2.11</artifactId>
<version>${akka.version}</version>
</dependency>
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-http-core_2.11</artifactId>
<version>${akka.version}</version>
</dependency>
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-http-experimental_2.11</artifactId>
<version>${akka.version}</version>
</dependency>
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-http-jackson-experimental_2.11</artifactId>
<version>${akka.version}</version>
</dependency>
<dependency>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>${maven-dependency-plugin.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<!-- This will download source so easy to see API and java doc. -->
<artifactId>maven-source-plugin</artifactId>
<executions>
<execution>
<id>attach-sources</id>
<phase>verify</phase>
<goals>
<goal>jar</goal>
</goals>
</execution>
</executions>
</plugin>
<!-- Java 8 compiler plugin -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven.compiler.plugin}</version>
<configuration>
<source>${java.compiler.source}</source>
<target>${java.compiler.target}</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
在此先感谢您提供的任何帮助和信息。
最佳答案
根据您的配置,directory的值是一个String
而不是另一个Config
对象:
myconf {
directory : "D:\\Git\\Java_Test_WS\\file.reader\\"
}
要获得作为
String
的值,您应该执行以下操作:Config config = system.settings().config().getString("myconf.directory");