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官网文档:https://learn.microsoft.com/zh-cn/aspnet/core/tutorials/signalr?view=aspnetcore-6.0&tabs=visual-studio
SignalR开源代码:https://github.com/signalr
很多小伙伴问:在前后端分离项目中,后端是.NET Core前端是Vue如何使用SignalR?在前后端不分离项目中,.NET Framework MVC项目中又如何使用SignalR技术呢?那就来看看下面这篇文章吧!本文主要介绍SignalR在实际项目中的应用,以及.NET Framework和.NET Core中如何去使用SignalR。
一、SignalR介绍
1.1-SignalR介绍
ASP.NET Core SignalR是一个开放源代码库,可用于简化向应用添加实时Web功能,实时Web功能使服务器端代码能够将内容推送到客户端。
1.2-SignalR的应用
- 需要从服务器进行高频更新的应用:包括游戏、社交网络、投票、拍卖、地图和GPS引用。
- 仪表盘和监视应用:包括公司仪表板、即时销售更新或旅行报警
- 协作应用:包括白板应用和团队会议软件。
- 通知应用:社交网络、电子邮件、聊天、游戏、旅行报警和其他应用都需要使用的通知。
二、.NET Framework使用SignalR
参考文献:
Owin介绍:https://www.cnblogs.com/Pinapple/p/6721361.html
Owin相关案例:https://blog.csdn.net/bifan546/article/details/77098896/
2.1-服务端(.NET Framework MVC)
(1)选择要使用Signalr的项目,点击【管理NuGet程序包】。
(2)搜索【SignalR】包,找到这个后然后点击下载。
会自动安装四个,注意他们之间有依赖关系:
(3).NET Framework平台需要添加Owin相关的包。
OWIN 是一种定义 Web 服务器和应用程序组件之间的交互的规范 。这一规范的目的是发展一个广阔且充满活力的、基于 Microsoft .NET Framework 的 Web 服务器和应用程序组件生态系统。
Microsoft.Owin.Hosting
Microsoft.Owin.Cors
Microsoft.Owin.Host.HttpListener
(4)在Web项目(要使用的Signal)中创建一个【Startup.cs】文件。
using JiCai.Admin.Hubs; using Microsoft.Owin; using Owin; [assembly: OwinStartup(typeof(JiCai.Admin.Startup))] namespace JiCai.Admin { public class Startup { /// <summary> /// 应用程序配置 /// </summary> /// <param name="app"></param> public void Configuration(IAppBuilder app) { //启用SignalR app.MapSignalR(); //绑定多个Hub app.MapSignalR<DemoHub>("/demoHub"); } } }
例如:
(5)可以创建一个【Hubs】文件夹,专门放置Hub相关文件。[西瓜程序猿]这边是创建一个Hub文件,名为【DemoHub.cs】。
using Fenqibao.DTO; using JiCai.Admin.Hubs.ConectionOperate; using JiCai.Admin.Hubs.Models; using log4net; using Microsoft.AspNet.SignalR; using Microsoft.AspNet.SignalR.Json; using Newtonsoft.Json; using System; using System.Collections.Generic; using System.Linq; using System.Threading.Tasks; namespace JiCai.Admin.Hubs { /// <summary> /// 报表管理-总表Hub /// </summary> public class SummaryTableHub : PersistentConnection { public readonly BaseService _base = new BaseService(); private readonly ILog logger = LogManager.GetLogger(typeof(SummaryTableHub)); private ConnectionManagement summaryTableCon = new ConnectionManagement(); public CookieUserData LoginUserData { get { IOperator oper = ContainerManager.Resolve<IOperator>(); LoginUser loginUser = oper as LoginUser; if (loginUser != null && loginUser.UserData != null) { return loginUser.UserData; } return null; } } /// <summary> /// 连接成功后调用 /// </summary> /// <param name="request"></param> /// <param name="connectionId"></param> /// <returns></returns> protected override Task OnConnected(IRequest request, string connectionId) { //获得SignalR的连接id var connid = connectionId; //获得用户id var userid = LoginUserData.Id.ToString(); Console.Write($"【{connid}】:已建立连接!"); //判断一下用户是不是已经链接了 var checkUserConn = summaryTableCon.IsConn(connid, userid); if (!checkUserConn) { //添加一个新的连接 summaryTableCon.AddConnInfo(new SignalRConn() { UserId = userid, ConnectionId = connid }); } //更新连接 else { summaryTableCon.UpdateConnInfo(userid, connid); } return Connection.Send(connectionId, $"【用户:{connectionId}】真正连接成功!"); //return base.OnConnected(request, connectionId); } /// <summary> /// 接收到请求的时候调用 /// </summary> /// <param name="request"></param> /// <param name="connectionId"></param> /// <param name="data"></param> /// <returns></returns> protected override async Task OnReceived(IRequest request, string connectionId, string data) { //获得用户id var userid = LoginUserData.Id.ToString(); await Task.Factory.StartNew(async () => { while (true) { var list = GetSummaryTableList(userid); string json_jieshou_mes = ""; if (list != null && list.Count > 0) { json_jieshou_mes = JsonConvert.SerializeObject(list); } await Connection.Send(connectionId, json_jieshou_mes); //每5秒同步一次 await Task.Delay(5000); } }, TaskCreationOptions.LongRunning); //return base.OnReceived(request, connectionId, data); } /// <summary> /// 连接中断的时候调用 /// </summary> /// <param name="request"></param> /// <param name="connectionId"></param> /// <param name="stopCalled"></param> /// <returns></returns> protected override Task OnDisconnected(IRequest request, string connectionId, bool stopCalled) { Console.Write($"【{connectionId}】:已断开连接!"); //获得SignalR的连接id var connid = connectionId; //关闭连接 summaryTableCon.DelConnInfo(connid); return base.OnDisconnected(request, connectionId, stopCalled); } /// <summary> /// 连接超时重新连接的时候调用 /// </summary> /// <param name="request"></param> /// <param name="connectionId"></param> /// <returns></returns> protected override Task OnReconnected(IRequest request, string connectionId) { return base.OnReconnected(request, connectionId); } /// <summary> /// 查询数据 /// </summary> /// <param name="userId"></param> /// <returns></returns> private List<SummaryTableDataModel> GetSummaryTableList(string userId) { var result = _base.Query<SummaryTableDataModel>($@" select * from demo-data ; ").ToList(); return result; } } }
(6)在Hubs/ConectionOperate文件夹中,[西瓜程序猿]这边创建【ConnectionManagement】文件,用来管理所有连接。
using System.Collections.Generic; using System.Linq; namespace JiCai.Admin.Hubs.ConectionOperate { /// <summary> /// 连接管理 /// </summary> public class ConnectionManagement { /// <summary> /// 用户连接集合 /// </summary> public static List<SignalRConn> SignalRConns { get; set; } = new List<SignalRConn>(); /// <summary> /// 添加连接 /// </summary> /// <param name="conn"></param> public void AddConnInfo(SignalRConn conn) { SignalRConns.Add(conn); } /// <summary> /// 删除连接 /// </summary> /// <param name="connid"></param> public void DelConnInfo(string connid) { var signalRConns = SignalRConns.FirstOrDefault(u => u.ConnectionId == connid); if (signalRConns != null) { SignalRConns.Remove(signalRConns); } } /// <summary> /// 更新链接(老的链接不起作用了) /// 场景:客户端重连了,userid没变,但是connid变了 /// </summary> /// <param name="userId">用户id</param> /// <param name="newConnsId">新的链接id</param> public void UpdateConnInfo(string userId, string newConnsId) { var signalRConns = SignalRConns.FirstOrDefault(u => u.UserId.ToLower() == userId.ToLower()); if (signalRConns != null) { signalRConns.ConnectionId = newConnsId; } } /// <summary> /// 判断用户是否已经链接 /// </summary> /// <param name="connid">连接id</param> /// <param name="userid">用户id</param> /// <returns></returns> public bool IsConn(string connid,string userid) { var userConn = SignalRConns.FirstOrDefault(u => u.ConnectionId.ToLower() == connid.ToLower() && u.UserId.ToLower() == userid.ToLower()); return userConn == null ? false : true; } } }
(7)在Hubs/ConectionOperate文件夹中,创建【SignalRConn.cs】文件用来作为SignalR和系统用户的连接实体。
namespace JiCai.Admin.Hubs.ConectionOperate { /// <summary> /// 连接 /// </summary> public class SignalRConn { /// <summary> /// 系统用户id /// </summary> public string UserId { get; set; } /// <summary> /// SignleR链接Id(每次链接SignalR都会分配一个id) /// </summary> public string ConnectionId { get; set; } } }
2.2-客户端(JS)
(1)下载相关jq/signalr相关包,分别是【jquery.signalR-2.4.3.js】和【jquery-1.6.4.min.js】。可以访问下载(如果失效了,请联系我[西瓜程序猿])。
下载地址(编码:yRLCRp81):https://yongteng.lanzoub.com/iXDlu1631ugd
密码:44x5
文件截图:
(2)创建一个js文件【data_list_table_hub.js】,用来连接signalR。
// 连接服务 var connection = $.connection("/summary_table_hub"); // 建立链接 connection.start(function () { //连接成功 console.log("西瓜程序猿-【" + new Date().toLocaleString() +"】连接成功!"); //发送消息 connection.send("给我数据吧"); }); // 连接断开 connection.disconnected(function () { console.log("西瓜程序猿-【" + new Date().toLocaleString() +"】连接断开!"); }); // 接收服务器发来的消息 connection.received(function (data) { console.log("西瓜程序猿-【" + new Date().toLocaleString() +"】接收服务器发来的消息:"); console.log(data); //显示数据 if (data != "" && checkJson(data)) { var obj = JSON.parse(data); var html_box = ""; for (var i = 0; i < obj.length; i++) { html_box += `<tr> <td>`+obj[i].project_name+`</td> <td>`+ obj[i].zuori_sum+`</td> <td>`+ obj[i].jinri_sum+`</td> <td>`+ obj[i].qunian_sum+`</td> <td>`+ obj[i].jinnian_sum+`</td> <td>`+ obj[i].sum+`</td> <td>`+ obj[i].yikaipiao_sum+`</td> <td>`+ obj[i].weikaipiao_sum +`</td> <td>`+ obj[i].yishoupiao_sum +`</td> <td>`+ obj[i].weishoupiao_sum +`</td> <td>`+ obj[i].kehu_yinghuikuan_sum+`</td> <td>`+ obj[i].kehu_yihuikuan_sum+`</td> <td>`+ obj[i].kehu_weihuikuan_sum +`</td> <td>`+ obj[i].fuwu_yingfukuan_sum+`</td> <td>`+ obj[i].fuwu_yifukuan_sum+`</td> <td>`+ obj[i].fuwu_weifukuan_sum+`</td> </tr>` } $("#last_async_date").text(new Date().toLocaleString()); $("#table_body").html(html_box); } }); //判断是不是json字符串 function checkJson(str) { if (typeof str == 'string') { try { var obj = JSON.parse(str); // 等于这个条件说明就是JSON字符串 会返回true if (typeof obj == 'object' && obj) { return true; } else { //不是就返回false return false; } } catch (e) { return false; } } return false; }
(3)创建要展示的文件,我这边是用MVC模式,所有前台文件是cshtml。
@{ ViewBag.Title = "西瓜程序猿-明细表"; } @section styles{ <style> .table_tr_center { text-align: center !important; } .table_tr_bg_0 { background: rgb(253,226,226); } .table_tr_bg_1 { background: rgb(218,226,246); } .table_tr_bg_2 { background: rgb(228,237,219); } .table_tr_bg_3 { background: rgb(249,229,215); } </style> } @section scripts{ <script src="~/Scripts/jquery-1.6.4.min.js"></script> <script src="~/Scripts/jquery.signalR-2.4.3.js"></script> <script src="~/Scripts/controller/hubs/data_list_table_hub.js?v=@DateTime.Now.Ticks"></script> } <div class="row"> <div class="col-xs-12"> </div> <div class="col-xs-12"> <div> 报表最新同步时间:<span id="last_async_date" style="color: #FF5722 !important;"></span> </div> <div class="layui-form"> <table class="layui-table"> <colgroup> <col> <col> <col> <col> <col> <col> <col> <col> <col> <col> <col> <col> <col> </colgroup> <thead> <tr> <th colspan="2" class="table_tr_center table_tr_bg_0">项目信息</th> <th colspan="5" class="table_tr_center table_tr_bg_1">销售情况</th> <th colspan="6" class="table_tr_center table_tr_bg_3">款项情况</th> </tr> <tr> <th class="table_tr_center">项目名称</th> <th class="table_tr_center">服务商名称</th> <th class="table_tr_center">昨天订单总额</th> <th class="table_tr_center">今天订单总额</th> <th class="table_tr_center">去年订单总额</th> <th class="table_tr_center">今年订单总额</th> <th class="table_tr_center">订单总额</th> <th class="table_tr_center">客户应回款总额</th> <th class="table_tr_center">客户已回款总额</th> <th class="table_tr_center">客户未回款总额</th> <th class="table_tr_center">服务商应付款总额</th> <th class="table_tr_center">服务商已付款总额</th> <th class="table_tr_center">服务商未付款总额</th> </tr> </thead> <tbody id="table_body"> </tbody> </table> </div> </div> </div>
(4)效果展示:
三、.NET Core WebAPI使用SignalR
场景:项目中需要服务端主动向客户端发送通知消息,后端是使用.NETCore实现的,前端是使用Vue3全家桶项目,前后端分离模式。本次主要讲使用SignalR如何来实现的。
3.1-服务端(.NET Core WebAPI)
1、右击项目,点击【管理NuGet程序包】安装SignalR。
2、搜索【SignalR】,点击【安装】。
3、如果是.NET6以前的版本,在【Startup.cs】中配置:
如果是.NET6以后得版本,在【Program.cs】配置:
var builder = WebApplication.CreateBuilder(args); //添加SignalR服务 builder.Services.AddSignalR(); app.UseEndpoints(endpoints => { endpoints.MapControllerRoute( name: "default", pattern: "{controller=Home}/{action=Index}/{id?}" ); //添加SignalR端点 endpoints.MapHub<ServerMonitorHub>("/serverMonitorHub"); });
4、创建SignalR中心
中心是一个类,用于处理客户端<——>服务器通信的高级管道。在SignalR_Demo项目文件夹中,创建Hubs文件夹。在Hubs文件夹中,使用已下代码创建ChatHub类。
public class ChatHub:Hub { /// <summary> /// 发送消息 /// </summary> /// <param name="user">用户名</param> /// <param name="message">发送信息</param> /// <returns></returns> public async Task SendMessage(string user,string message) { await Clients.All.SendAsync("ReceiveMessage", user, message); } }
3.2-客户端(Vue3+Vite+TS)
(1)安装SugbalR
npm install @latelier/vue-signalr
版本截图:
(2)然后新建一个文件,用来封装业务逻辑相关代码。[西瓜程序猿]是在【src/utils】目录下,创建了一个名为【signalr.ts】的文件,也可以是js文件,根据自己项目的需要去新建。
代码:
import * as signalR from '@microsoft/signalr'; //如果需要身份验证 //.withUrl('/messageHub', {accessTokenFactory: () => sessionStorage.getItem('token')}) let connection; // 建立连接 async function start(url) { try { connection = new signalR.HubConnectionBuilder() .withUrl(url)//跨域需要使用绝对地址 .configureLogging(signalR.LogLevel.Information) .withAutomaticReconnect() // 设置自动重连机制 .build(); } catch(err) { console.log(err); setTimeout(start, 10000);//错误重连 } } // 开始signalr连接 const connect = async (url) => { await start(url); console.log(`【西瓜程序猿-${new Date().toLocaleString()}:SignalR已连接成功!`); }; // 调用服务端方法 async function send(methodName, param){ try { await connection.invoke(methodName, param); } catch (err) { console.error(err); } } //断开连接 const disconnect = async ()=>{ await connection.stop(); console.log(`【西瓜程序猿-${new Date().toLocaleString()}:SignalR已断开连接!`); }; export { connection, connect, send, disconnect };
(3)然后再页面进行使用。[西瓜程序猿]这里以Echarts图表展示为例子,首先先安装Echarts包。
npm install echarts --save
版本截图:
(4)然后再页面写入如下代码,具体页面样式根据需要进行修改调整哦。
<!-- * @Author: Kimi Liu * @Date: 2023-05-24 21:11:24 * @LastEditors: Kimi Liu * @LastEditTime: 2023-07-07 16:18:55 * @FilePath: KimiToolBoxsrcviewsmonitorserverindex.vue * @Description: 服务监控 * Copyright (c) 2023 by kimiliu.cn, All Rights Reserved. --> <template> <!-- 面包屑导航 --> <breadcrumb class="breadcrumb_container" /> <div class="app_main_padding"> <el-row> <el-col :span="24" class="card-box"> <el-card> <template #header> <span><i class="el-icon-monitor"></i> 服务器信息</span> </template> <div class="el-table el-table--enable-row-hover el-table--medium"> <table cellspacing="0" style="width: 100%;"> <tbody> <tr> <td class="el-table__cell is-leaf"><div class="cell">主机名称</div></td> <td class="el-table__cell is-leaf"><div class="cell" v-if="serverInfo">{{serverInfo.HostName}}</div></td> <td class="el-table__cell is-leaf"><div class="cell">系统名称</div></td> <td class="el-table__cell is-leaf"><div class="cell" v-if="serverInfo">{{serverInfo.OSDescription}}</div></td> </tr> <tr> <td class="el-table__cell is-leaf"><div class="cell">IP地址</div></td> <td class="el-table__cell is-leaf"><div class="cell" v-if="serverInfo">{{serverInfo.IpAddress}}</div></td> <td class="el-table__cell is-leaf"><div class="cell">操作系统</div></td> <td class="el-table__cell is-leaf"><div class="cell" v-if="serverInfo">{{serverInfo.OperatingSystem}} {{serverInfo.OsArchitecture}}</div></td> </tr> </tbody> </table> </div> </el-card> </el-col> <el-col :span="24" class="card-box"> <el-card> <template #header> <span><i class="el-icon-monitor"></i> 应用信息</span> </template> <div class="el-table el-table--enable-row-hover el-table--medium"> <table cellspacing="0" style="width: 100%;"> <tbody> <tr> <td class="el-table__cell is-leaf"><div class="cell">.NET Core版本</div></td> <td class="el-table__cell is-leaf"><div class="cell" v-if="serverInfo">{{serverInfo.FrameworkDescription}}</div></td> <td class="el-table__cell is-leaf"><div class="cell">内存占用</div></td> <td class="el-table__cell is-leaf"><div class="cell" v-if="serverInfo">{{serverInfo.MemoryFootprint}}</div></td> </tr> <tr> <td class="el-table__cell is-leaf"><div class="cell">环境变量</div></td> <td class="el-table__cell is-leaf"><div class="cell" v-if="serverInfo">{{serverInfo.EnvironmentName}}</div></td> <td class="el-table__cell is-leaf"><div class="cell">项目路径</div></td> <td class="el-table__cell is-leaf"><div class="cell" v-if="serverInfo">{{serverInfo.ContentRootPath}}</div></td> </tr> </tbody> </table> </div> </el-card> </el-col> <el-col :span="24" class="card-box"> <el-card> <template #header> <span><i class="el-icon-monitor"></i> 磁盘状态</span> </template> <div class="el-table el-table--enable-row-hover el-table--medium"> <table cellspacing="0" style="width: 100%;" class="el-table__header"> <thead> <tr> <th class="el-table_2_column_12 is-leaf headWeight el-table__cell"><div class="cell">磁盘名称</div></th> <th class="el-table_2_column_11 is-leaf headWeight el-table__cell"><div>盘符路径</div></th> <th class="el-table_2_column_12 is-leaf headWeight el-table__cell"><div class="cell">文件系统</div></th> <th class="el-table_2_column_12 is-leaf headWeight el-table__cell"><div class="cell">盘符类型</div></th> <th class="el-table_2_column_12 is-leaf headWeight el-table__cell"><div class="cell">总大小</div></th> <th class="el-table_2_column_12 is-leaf headWeight el-table__cell"><div class="cell">已用大小</div></th> <th class="el-table_2_column_12 is-leaf headWeight el-table__cell"><div class="cell">可用大小</div></th> <th class="el-table_2_column_12 is-leaf headWeight el-table__cell"><div class="cell">已使用率</div></th> </tr> </thead> <tbody v-if="diskInfos" class="table_tbody"> <tr v-for="(sysFile, index) in diskInfos" :key="index"> <td class="el-table_2_column_11 el-table__cell"><div class="cell">{{ sysFile.DiskName }}</div></td> <td class="el-table_2_column_11 el-table__cell"><div class="cell">{{ sysFile.RootPath }}</div></td> <td class="el-table_2_column_11 el-table__cell"><div class="cell">{{ sysFile.DriveType }}</div></td> <td class="el-table_2_column_11 el-table__cell"><div class="cell">{{ sysFile.FileSystem }}</div></td> <td class="el-table_2_column_11 el-table__cell"><div class="cell">{{ sysFile.TotalSize }}</div></td> <td class="el-table_2_column_11 el-table__cell"><div class="cell">{{ sysFile.UseSize }}</div></td> <td class="el-table_2_column_11 el-table__cell"><div class="cell">{{ sysFile.ResidueSize }}</div></td> <td class="el-table_2_column_11 el-table__cell"><div class="cell"><el-progress :percentage="sysFile.UseRate" :text-inside="true" :stroke-width="14" :color="customColor"/></div></td> </tr> </tbody> </table> </div> </el-card> </el-col> <el-col :span="24" class="card-box"> <el-card class="box-card"> <template #header> <span><i class="el-icon-monitor"></i> 状态</span> </template> <div> <el-row> <el-col :xs="6" :sm="6" :md="6" :lg="6" :xl="6" style="margin-bottom: 10px" class="box_item"> <div class="title">CPU使用率</div> <div class="content"> <el-progress type="dashboard" :percentage="cpuInfo.CPULoadVal" :color="customColor" /> </div> <div class="footer">{{ cpuInfo.ProcessorCount }} 核心</div> </el-col> <el-col :xs="6" :sm="6" :md="6" :lg="6" :xl="6" style="margin-bottom: 10px" class="box_item"> <div class="title">内存使用率</div> <div class="content"> <el-progress type="dashboard" :percentage="memoryInfo.UsedPercentage" :color="customColor" /> </div> <div class="footer">{{ memoryInfo.UsedPhysicalMemory }} / {{ memoryInfo.TotalPhysicalMemory }}</div> </el-col> <el-col :xs="6" :sm="6" :md="6" :lg="6" :xl="6" style="margin-bottom: 10px" class="box_item"> <div class="title">网络监控上传</div> <div class="content"> <el-progress type="dashboard" :percentage="networkInfo.SentSize" :color="customColor" > <template #default> {{networkInfo.SentSize}} {{ networkInfo.SentSizeType }} </template> </el-progress> </div> <div class="footer"> {{networkInfo.SentSize}} {{ networkInfo.SentSizeType }}/S</div> </el-col> <el-col :xs="6" :sm="6" :md="6" :lg="6" :xl="6" style="margin-bottom: 10px" class="box_item"> <div class="title">网络监控下载</div> <div class="content"> <el-progress type="dashboard" :percentage="networkInfo.ReceivedSize" :color="customColor" > <template #default> {{networkInfo.ReceivedSize}} {{ networkInfo.ReceivedSizeType }} </template> </el-progress> </div> <div class="footer"> {{networkInfo.ReceivedSize}} {{ networkInfo.ReceivedSizeType }}/S</div> </el-col> </el-row> </div> </el-card> </el-col> <el-col :span="24" class="card-box"> <el-row :gutter="25"> <el-col :xs="24" :sm="24" :md="12" :lg="12" :xl="12" style="margin-bottom: 10px"> <el-card class="box-card"> <template #header> <span><i class="el-icon-monitor"></i> CPU使用率监控</span> </template> <div> <div id="chart1" class="chart"></div> </div> </el-card> </el-col> <el-col :xs="24" :sm="24" :md="12" :lg="12" :xl="12" style="margin-bottom: 10px"> <el-card class="box-card"> <template #header> <span><i class="el-icon-monitor"></i> 内存使用率监控</span> </template> <div> <div id="chart2" class="chart"></div> </div> </el-card> </el-col> </el-row> </el-col> </el-row> </div> </template> <script lang="ts" setup> import { ref, onMounted, onBeforeUnmount, reactive } from 'vue'; import { EChartsOption, init } from 'echarts'; import { connection, connect, disconnect } from '@/utils/signalr'; import { getApiUrl } from '@/apis/common/utils'; // CPU监控图标 const cpuOption = reactive<EChartsOption>( { tooltip: { trigger: 'axis' }, xAxis: { type: 'category', boundaryGap: false, data: [] }, yAxis: { type: 'value', min: 0, max: 100, interval: 20, axisLabel: { formatter: '{value}%' } }, series: [ { data: [], type: 'line' } ] } ); const memoryOption = reactive<EChartsOption>( { tooltip: { trigger: 'axis' }, xAxis: { type: 'category', boundaryGap: false, data: [] }, yAxis: { type: 'value', min: 0, max: 100, interval: 20, axisLabel: { formatter: '{value}%' } }, series: [ { data: [], type: 'line' } ] } ); // 获得服务器信息 const serverInfo = ref(); const cpuInfo = ref(); const memoryInfo = ref(); const diskInfos = ref([]); const networkInfo = ref(); const getServerInfos = (res) => { serverInfo.value = res.Server; cpuInfo.value = res.CPU; memoryInfo.value = res.Memory; diskInfos.value = res.Disk; networkInfo.value = res.Network; if(cpuOption.xAxis.data.length >= 8) { cpuOption.xAxis.data.shift(); cpuOption.series[0].data.shift(); memoryOption.xAxis.data.shift(); memoryOption.series[0].data.shift(); } cpuOption.xAxis.data.push(res.Time); cpuOption.series[0].data.push(res.CPU.CPULoadVal); memoryOption.xAxis.data.push(res.Time); memoryOption.series[0].data.push(res.Memory.UsedPercentage); // 获取dom,断言HTMLElement类型,否则会报错 const chartEle: HTMLElement = document.getElementById('chart1') as HTMLElement; const chart = init(chartEle); chart.setOption(cpuOption); // 获取dom,断言HTMLElement类型,否则会报错 const chartEle2: HTMLElement = document.getElementById('chart2') as HTMLElement; const chart2 = init(chartEle2); chart2.setOption(memoryOption); // 重置图表大小 window.addEventListener('resize', () => { chart.resize(); chart2.resize(); }); }; onMounted(async () => { // 建立连接 connect('http://192.168.11:8080/serverMonitorHub'); // 注册方法(接收服务器推送过来的数据) connection.on('ReceiveMessage', (res) => { console.log(`【${new Date().toLocaleString()}】:从服务器同步成功!`); if(res) { const result = JSON.parse(res); getServerInfos(result); } }); // 开始连接 await connection.start(); }); // 卸载 onBeforeUnmount(() => { // 断开连接 disconnect(); }); // 进度条颜色 const customColor = ref('#ff7831'); </script> <style lang="scss" scoped> .card-box { padding-right: 15px; margin-bottom: 15px; } :deep(.el-card.is-always-shadow) { box-shadow: 0 5px 8px 0 rgba(0,0,0,0.03); border: none; } .chart { width: 100%; height: 300px; } .box_item { display: flex; justify-content: center; flex-direction: column; align-items: center; } .table_tbody { tr td{ padding: 15px 0; text-align: center; } } </style>
(5)效果展示: