google guava的消息总线：EventBus，Java

我不是女神ヾ 2023-09-26 11:01 75阅读 0赞

## google guava的消息总线：EventBus，Java ##

pom.xml添加引用：

<dependency>
        <groupId>com.google.guava</groupId>
        <artifactId>guava</artifactId>
        <version>31.1-jre</version>
    </dependency>

import com.google.common.eventbus.EventBus;
    import com.google.common.eventbus.Subscribe;
    
    public class MainClass {
        public static void main(String[] args) {
            AppEventListener appEventListener = new AppEventListener();
    
            EventBus eventBus = new EventBus();
            //支持异步操作
            //EventBus eventBus = new AsyncEventBus(Executors.newCachedThreadPool());
            eventBus.register(appEventListener);
    
            eventBus.post("1 zhang");
        }
    
        @Subscribe
        private void receiver(String msg) {
            System.out.println(getClass().getName() + " 收到 " + msg);
        }
    }

import com.google.common.eventbus.EventBus;
    import com.google.common.eventbus.Subscribe;
    
    public class AppEventListener {
        private EventBus eventBus;
    
        public AppEventListener() {
            MainClass mainClass = new MainClass();
            eventBus = new EventBus();
            eventBus.register(mainClass);
        }
    
        @Subscribe
        private void receiver(String msg) {
            System.out.println(getClass().getName() + " 收到 " + msg);
    
            eventBus.post("2 phil");
        }
    }

输出：

> test.AppEventListener 收到 1 zhang  
> test.MainClass 收到 2 phil

com.google.guava的maven仓库地址：

[https://mvnrepository.com/artifact/com.google.guava/guava![icon-default.png_t_M85B][]https://mvnrepository.com/artifact/com.google.guava/guava][https_mvnrepository.com_artifact_com.google.guava_guava_icon-default.png_t_M85B_https_mvnrepository.com_artifact_com.google.guava_guava]

[icon-default.png_t_M85B]: https://csdnimg.cn/release/blog_editor_html/release2.2.0/ckeditor/plugins/CsdnLink/icons/icon-default.png?t=M85B
[https_mvnrepository.com_artifact_com.google.guava_guava_icon-default.png_t_M85B_https_mvnrepository.com_artifact_com.google.guava_guava]: https://mvnrepository.com/artifact/com.google.guava/guava