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Springboot中使用websocket

前端

了解更多请参考https://blog.csdn.net/qq_21144985/article/details/72921104
<html>
<#include "../common/header.ftl">

<body>
<div id="wrapper" class="toggled">

    <#--边栏sidebar-->
    <#include "../common/nav.ftl">

    <#--主要内容content-->
    <div id="page-content-wrapper">
        <div class="container-fluid">
            <div class="row clearfix">
                <div class="col-md-12 column">
                    <table class="table table-bordered table-condensed">
                        <thead>
                        <tr>
                            <th>订单id</th>
                            <th>姓名</th>
                            <th>手机号</th>
                            <th>地址</th>
                            <th>金额</th>
                            <th>订单状态</th>
                            <th>支付状态</th>
                            <th>创建时间</th>
                            <th colspan="2">操作</th>
                        </tr>
                        </thead>
                        <tbody>

                        <#list orderDTOPage.content as orderDTO>
                        <tr>
                            <td>${orderDTO.orderId}</td>
                            <td>${orderDTO.buyerName}</td>
                            <td>${orderDTO.buyerPhone}</td>
                            <td>${orderDTO.buyerAddress}</td>
                            <td>${orderDTO.orderAmount}</td>
                            <td>${orderDTO.getOrderStatusEnum().message}</td>
                            <td>${orderDTO.getPayStatusEnum().message}</td>
                            <td>${orderDTO.createTime}</td>
                            <td><a href="/sell/seller/order/detail?orderId=${orderDTO.orderId}" target="_blank" rel="external nofollow" >详情</a></td>
                            <td>
                                <#if orderDTO.getOrderStatusEnum().message == "新订单">
                                    <a href="/sell/seller/order/cancel?orderId=${orderDTO.orderId}" target="_blank" rel="external nofollow" >取消</a>
                                </#if>
                            </td>
                        </tr>
                        </#list>
                        </tbody>
                    </table>
                </div>

            <#--分页-->
                <div class="col-md-12 column">
                    <ul class="pagination pull-right">
                    <#if currentPage lte 1>
                        <li class="disabled"><a href="#" target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow" >上一页</a></li>
                    <#else>
                        <li><a href="/sell/seller/order/list?page=${currentPage - 1}&size=${size}" target="_blank" rel="external nofollow" >上一页</a></li>
                    </#if>

                    <#list 1..orderDTOPage.getTotalPages() as index>
                        <#if currentPage == index>
                            <li class="disabled"><a href="#" target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow" >${index}</a></li>
                        <#else>
                            <li><a href="/sell/seller/order/list?page=${index}&size=${size}" target="_blank" rel="external nofollow" >${index}</a></li>
                        </#if>
                    </#list>

                    <#if currentPage gte orderDTOPage.getTotalPages()>
                        <li class="disabled"><a href="#" target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow" >下一页</a></li>
                    <#else>
                        <li><a href="/sell/seller/order/list?page=${currentPage + 1}&size=${size}" target="_blank" rel="external nofollow" >下一页</a></li>
                    </#if>
                    </ul>
                </div>
            </div>
        </div>
    </div>

</div>

<#--弹窗-->
<div class="modal fade" id="myModal" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
                <h4 class="modal-title" id="myModalLabel">
                    提醒
                </h4>
            </div>
            <div class="modal-body">
                你有新的订单
            </div>
            <div class="modal-footer">
                <button onclick="javascript:document.getElementById('notice').pause()" type="button" class="btn btn-default" data-dismiss="modal">关闭</button>
                <button onclick="location.reload()" type="button" class="btn btn-primary">查看新的订单</button>
            </div>
        </div>
    </div>
</div>

<#--播放音乐-->
<audio id="notice" loop="loop">
    <source src="/sell/mp3/song.mp3" type="audio/mpeg" />
</audio>

<script src="https://cdn.bootcss.com/jquery/1.12.4/jquery.min.js"></script>
<script src="https://cdn.bootcss.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<script>
    var websocket = null;
    if('WebSocket' in window) {
        //websocket = new WebSocket('ws://sell.natapp4.cc/sell/webSocket');
        websocket = new WebSocket('ws://localhost:8080/sell/webSocket');
    }else {
        alert('该浏览器不支持websocket!');
    }

    websocket.onopen = function (event) {
        console.log('建立连接');
    }

    websocket.onclose = function (event) {
        console.log('连接关闭');
    }

    websocket.onmessage = function (event) {
        console.log('收到消息:' + event.data)
        //弹窗提醒, 播放音乐
        $('#myModal').modal('show');

        document.getElementById('notice').play();
    }

    websocket.onerror = function () {
        alert('websocket通信发生错误！');
    }

    window.onbeforeunload = function () {
        websocket.close();
    }

</script>

</body>
</html>

组件注入

package com.imooc.config;

import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;
import org.springframework.web.socket.server.standard.ServerEndpointExporter;

@Component
public class WebSocketConfig {

    @Bean
    public ServerEndpointExporter serverEndpointExporter() {
        return new ServerEndpointExporter();
    }
}

接口入口处

package com.imooc.service;

import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import javax.websocket.OnClose;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.ServerEndpoint;
import java.util.concurrent.CopyOnWriteArraySet;

@Component
@ServerEndpoint("/webSocket")
@Slf4j
public class WebSocket {

    private Session session;

    private static CopyOnWriteArraySet<WebSocket> webSocketSet = new CopyOnWriteArraySet<>();

    @OnOpen
    public void onOpen(Session session) {
        this.session = session;
        webSocketSet.add(this);
        log.info("【websocket消息】有新的连接, 总数:{}", webSocketSet.size());
    }

    @OnClose
    public void onClose() {
        webSocketSet.remove(this);
        log.info("【websocket消息】连接断开, 总数:{}", webSocketSet.size());
    }

    @OnMessage
    public void onMessage(String message) {
        log.info("【websocket消息】收到客户端发来的消息:{}", message);
    }

    public void sendMessage(String message) {
        for (WebSocket webSocket: webSocketSet) {
            log.info("【websocket消息】广播消息, message={}", message);
            try {
                webSocket.session.getBasicRemote().sendText(message);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

}