WebSocket前端SockJS获取订阅的信息文本内容

一. 引入SockJS依赖

1. vue引入依赖

import SockJS from  'sockjs-client';
import Stomp from 'stompjs';

2. maven引入依赖

• pom.xml文件添加依赖

<dependency>
    <groupId>org.webjars</groupId>
    <artifactId>sockjs-client</artifactId>
    <version>1.0.2</version>
</dependency>
<dependency>
    <groupId>org.webjars</groupId>
    <artifactId>stomp-websocket</artifactId>
    <version>2.3.3</version>
</dependency>

• html文件里引入jar包的js

<script src="/webjars/sockjs-client/1.0.2/sockjs.min.js"></script>
<script src="/webjars/stomp-websocket/2.3.3/stomp.min.js"></script>

注意: 使用maven引入依赖的项目springboot

二. 创建连接, 订阅消息

var socket = new SockJS('/wsdemo');
stompClient = Stomp.over(socket);
// 创建连接
stompClient.connect({}, function (frame) {
    //订阅消息
    stompClient.subscribe('/topic/message', function (data) {
        initOnLine(data.body)
    });
);

三. 获取订阅的消息

 //订阅消息
stompClient.subscribe('/topic/message', (msg) => {
    // 输出返回的信息
    console.log(msg);
    // 输出返回的消息的文本内容
    console.log(meg.body);
});

---- ## 参考来源 [vue使用SockJS实现webSocket通信](https://www.cnblogs.com/luoxuemei/p/10115679.html)