我尝试按照Typed Actors (Java)上的示例在Java中实现TypedActor
。但我很挣扎。我添加了akka-actor-1.1-M1.jar
,akka-typed-actor-1.1-M1.jar
,scala-library.jar
但这还不够。我在Eclipse中遇到错误,因此我还在构建路径中添加了aspectwerkz-2.0.jar
和aspectwerkz-core-2.0.jar
。
我尝试将TypedActor与自定义构造函数一起使用。
但现在我在编译时遇到错误:
Exception in thread "main" java.lang.NoSuchMethodError: org.codehaus.aspectwerkz.proxy.Proxy.newInstance([Ljava/lang/Class;[Ljava/lang/Object;ZZ)Ljava/lang/Object;
at akka.actor.TypedActor$.newInstance(TypedActor.scala:596)
at akka.actor.TypedActor$.newInstance(TypedActor.scala:634)
at akka.actor.TypedActor.newInstance(TypedActor.scala)
at com.example.actor.ActorTest.main(ActorTest.java:12)
以下是BaseActor
的代码:
import akka.actor.TypedActor;
public class BaseActor extends TypedActor implements BaseService {
private String str;
private int num;
public BaseActor(String str, int num) {
this.str = str;
this.num = num;
System.out.println("booted");
}
public void testData(String str, int num) {
System.out.println(this.str + " " + this.num);
System.out.println(str + " " + num);
}
}
我的interface
服务:
public interface BaseService {
public void testData(String str, int num);
}
还有一个测试类:
import akka.actor.TypedActor;
import akka.actor.TypedActorFactory;
public class ActorTest {
public static void main(String[] args) {
BaseService service = TypedActor.newInstance(BaseService.class,
new TypedActorFactory() {
public TypedActor create() {
return new BaseActor("someString", 12);
}
});
service.testData("Hello", 6);
}
}
在他们写的例子中:
Service service = TypedActor.newInstance(classOf[Service],
new TypedActorFactory() {
public TypedActor create() {
return new ServiceWithConstructorArgsImpl("someString", 500L));
});
但我不认为classOf[Service]
是Java,它看起来更像是Scala。
如何使用自定义构造函数实现TypedActor
?
答案 0 :(得分:3)
据我所见,您的代码是正确的。 要使用非默认构造函数在Java中实例化TypedActor,您应该使用:
BaseService service = TypedActor.newInstance(BaseService.class,
new TypedActorFactory() {
public TypedActor create() {
return new BaseActor("someString", 12);
}
});
事实上,官方文件中包含一个拼写错误。
您可以尝试使用aspectwerkz-2.2.3吗?我已经尝试过你的代码,它对我有用。唯一的区别是我正在使用的aspectwerkz版本。
另外,请注意这些是akka-typed-actor 1.1-M1的依赖项:
<dependency org="org.codehaus.aspectwerkz" name="aspectwerkz" rev="2.2.3" force="true" conf="compile->compile(*),master(*);runtime->runtime(*)"/>
<dependency org="aopalliance" name="aopalliance" rev="1.0" force="true" conf="compile->compile(*),master(*);runtime->runtime(*)"/>
<dependency org="org.guiceyfruit" name="guice-all" rev="2.0" force="true" conf="compile->compile(*),master(*);runtime->runtime(*)"/>
<dependency org="se.scalablesolutions.akka" name="akka-stm" rev="1.1-M1" force="true" conf="compile->compile(*),master(*);runtime->runtime(*)"/>
<dependency org="org.scala-lang" name="scala-library" rev="2.9.0.RC1" force="true" conf="compile->compile(*),master(*);runtime->runtime(*)"/>