Angular5集成eventbus的示例代码

"dependencies": { ... "vertx3-eventbus-client": "3.5.2", },

然后  npm install，或者：

npm install vertx3-eventbus-client@3.5.2

2.angular-cli.json中

"scripts": [ ... "../node_modules/vertx3-eventbus-client/vertx-eventbus.js" ],

3.创建一个eventbus.service.ts用来通信

导入eventbus：

import { EventBus } from 'vertx3-eventbus-client';

声明eventbus:

declare var EventBus: any;

4.创建eventbus实例，监听接口以及发送消息

//创建实例 var eb = new EventBus('http://localhost:8080/eventbus'); eb.onopen = function() { //注册监听器用来接受消息 eb.registerHandler('some-address', function(error, message) { console.log('received a message: ' + JSON.stringify(message)); }); //发送消息 eb.send('some-address', {name: 'tim', age: 587}); }

更多信息请参考这里 https://vertx.io/docs/vertx-web/java/

注：

对于需要发送消息来接受的消息，需要先监听，然后再发送消息。
对于一直推送的消息，不需要发送。

代码实例如下：

RegisterHandler(key, id, callback) { const address = '***.' + key + '.' + id; if (typeof (this.eventBus[key]) === 'undefined' || !this.eventBus[key]) { this.eventBus[key] = new EventBus(environment.eventbusUrl); } if (this.eventBus[key].state === EventBus.OPEN) { this.eventBus[key].registerHandler(address, callback); } else { const $this = this; this.eventBus[key].onopen = function () { $this.eventBus[key].registerHandler(address, callback) } } } Send(key, id) { var data = ''; const address = ***.' + key + '.' + id; if (typeof (this.eventBus[key]) === 'undefined' || !this.eventBus[key]) { this.eventBus[key] = new EventBus(environment.eventbusUrl); } if (this.eventBus[key].state === EventBus.OPEN) { this.eventBus[key].send(address, data) } else { const $this = this; this.eventBus[key].onopen = function () { $this.eventBus[key].send(address, data) } } } closeEventBus(key) { if (typeof (this.eventBus[key]) !== 'undefined' && this.eventBus[key] && this.eventBus[key].state === EventBus.OPEN) { this.eventBus[key].close(); } this.eventBus[key] = null; }

在组件ngOnDestroy中调用closeEventBus关闭eventbus。