Java——akka actor 简单使用方法

1、pom.xml添加

        <dependency>
            <groupId>com.typesafe.akka</groupId>
            <artifactId>akka-actor_2.12</artifactId>
            <version>2.5.12</version>
        </dependency>

2、向自定义Actor发送一个字符串

HiActor.java

package com.sfire.m2test.akka;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import akka.actor.AbstractActor;
import akka.actor.ActorRef;
import akka.actor.ActorSystem;
import akka.actor.Props;

/**
 * @FileName: HiActor.java
 * @Author : chong
 * @CreateTime: Apr 27, 2022 3:55:01 PM
 * @Version: 1.0.0
 */
public class HiActor extends AbstractActor {

    private final static Logger LOGGER = LoggerFactory.getLogger(HiActor.class);

    @Override
    public Receive createReceive() {
        return receiveBuilder().match(String.class, result -> {
            LOGGER.info("hi , i am an actor..., i get result = " + result);
        }).build();
    }

    public static void main(String[] args) {
        // 定义一个Actor管理仓库
        ActorSystem DEFAULT = ActorSystem.create("blaze");
        // 把自定义的Actor放入仓库并起个名字
        ActorRef actorRef = DEFAULT.actorOf(Props.create(HiActor.class), "hi_actor");
        // 告诉HiActor一些消息
        actorRef.tell("something...", actorRef.noSender());
    }

}

3、向OneActor发送一个对象，OneActor把收到对象的age参数加1，再转发给TwoActor, OneActor再把age加1，回发给OneActor

OneActor.java

package com.sfire.m2test.akka;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.alibaba.fastjson.JSONObject;

import akka.actor.AbstractActor;
import akka.actor.ActorRef;
import akka.actor.ActorSystem;
import akka.actor.Props;

/**
 * @FileName: OneActor.java
 * @Author : chong
 * @CreateTime: Apr 27, 2022 4:08:51 PM
 * @Version: 1.0.0
 */
public class OneActor extends AbstractActor {

    private final static Logger LOGGER = LoggerFactory.getLogger(OneActor.class);

    @Override
    public Receive createReceive() {
        return receiveBuilder().match(SomeOne.class, someOne -> {
            JSONObject json = new JSONObject();
            json.put("someOne", someOne);
            LOGGER.info(JSONObject.toJSONString(someOne));

            // 把收到的消息对象，转而发给 TwoActor
            ActorRef actorRef = this.getContext().actorOf(Props.create(TwoActor.class, TwoActor::new));
            someOne.setAge(someOne.getAge() + 1);
            actorRef.tell(someOne, this.getSelf());

        }).build();
    }

    public static void main(String[] args) {
        // 定义Actor管理仓库
        ActorSystem actorSystem = ActorSystem.create("blaze");
        // 把OneActor放入仓库
        ActorRef actorRef = actorSystem.actorOf(Props.create(OneActor.class, OneActor::new), "one_actor");
        // 向OneActor发送一个消息对象
        SomeOne someOne = new SomeOne(1, "liming", 19);
        actorRef.tell(someOne, actorRef.noSender());
    }

}

TwoActor.java

package com.sfire.m2test.akka;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.alibaba.fastjson.JSONObject;

import akka.actor.AbstractActor;
import akka.japi.pf.ReceiveBuilder;

/**
 * @FileName: TwoActor.java
 * @Author : chong
 * @CreateTime: Apr 27, 2022  4:36:06 PM 
 * @Version: 1.0.0
 */
public class TwoActor extends AbstractActor {
    
    private final static Logger LOGGER = LoggerFactory.getLogger(OneActor.class);


    @Override
    public Receive createReceive() {
        ReceiveBuilder builder = ReceiveBuilder.create();
        builder.match(SomeOne.class, someOne -> {
            LOGGER.info(JSONObject.toJSONString(someOne));
            Thread.sleep(1000);
            // 把消息再回发给发送者
            someOne.setAge(someOne.getAge() + 1);
            this.getSender().tell(someOne, getSelf());
        });
        return builder.build();
    }

}

SomeOne.java

package com.sfire.m2test.akka;

/**
 * @FileName: SomeInfo.java
 * @Author : chong
 * @CreateTime: Apr 27, 2022 4:06:55 PM
 * @Version: 1.0.0
 */
public class SomeOne {

    private Integer id;

    private String name;

    private Integer age;

    public SomeOne(int id, String name, Integer age) {
        this.id = id;
        this.name = name;
        this.age = age;
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

}