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java-design-patterns/localization/zh/data-bus/README.md
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Ilkka Seppälä 4108f86177 docs: Prepare for new website launch (#2149)
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* Fix Logs

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* Fix last errors in checkstyle.

* Fix sonar issues

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* Fix Bug with mongo connection. Used "Try with resources"

* Add test

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* Provided missing tests

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* Fixes according PR comments. Mainly Readme edits.

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Co-authored-by: Victor Zalevskii <zvictormail@gmail.com>
2022-10-23 16:29:49 +03:00

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---
title: Data Bus
category: Architectural
language: zh
tags:
- Decoupling
---
## 含义
数据总线模式(译者:实际上,就是 Event-Bus 消息总线模式)允许在一个应用程序的组件之间收发消息/事件,而不需要这些组件相互感知,它们只需要知道所发送/接收的消息/事件的类型即可。
## 类图
![data bus pattern uml diagram](etc/data-bus.urm.png "Data Bus pattern")
## 适用场景
可以在以下场景使用数据总线模式:
* 你希望由你的组件自己决定要接收哪些信息/事件
* 你希望实现多对多的通信
* 你希望你的组件不需要感知彼此
## 相关模式
数据总线类似于以下设计模式:
* 中介者模式(Mediator pattern),由数据总线成员自己决定是否要接受任何给定的消息。
* 观察者模式(Observer pattern),但进一步支持了多对多的通信。
* 发布/订阅模式(Publish/Subscribe pattern),但是数据总线将发布者和订阅者解耦。