vue.js

关注公众号 jb51net

关闭
首页 > 网络编程 > JavaScript > javascript类库 > vue.js > Vue海康Web插件视频监控

Vue 3集成海康Web插件实现视频监控功能

作者：前端青山

本文详细介绍了如何使用 Vue 3 框架集成海康Web插件实现视频监控功能,通过定义属性、事件、变量,以及编写初始化、播放视频、处理节点点击事件等方法,我们成功实现了视频监控系统的前端部分,感兴趣的朋友一起看看吧

引言

最近在项目中使用了 Vue 3 结合海康Web插件来实现视频监控功能，过程中遇到了一些挑战和解决方案。为了帮助开发小伙伴们更好地理解和应用这一技术栈，特此分享一下我们的经验和代码实现。

项目背景

在当前的项目中，我们需要实现一个视频监控系统，能够展示多个监控点的实时视频流，并支持用户通过树形结构选择不同的监控点。为了实现这一需求，我们选择了 Vue 3 作为前端框架，并集成了海康Web插件来处理视频流的播放和管理。

准备工作

1. 官网下载

在官网海康开放平台下载视频web插件

2.安装插件

3.插件js文件引入vue项目

将这3个js文件引入vue项目中的public文件夹下新建文件夹放入

然后在index.html文件中根路径引入配置文件

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <link rel="icon" href="/favicon.ico" rel="external nofollow" >
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>前端青山</title>
  </head>
  <body>
    <div id="screen"></div>
    <!-- 连接内网部署离线天地图 -->
    <script src="/h5player/h5player.min.js"></script>
    <script src="/webControl/jquery-1.12.4.min.js"></script>
    <script src="/webControl/jsencrypt.min.js"></script>
    <script src="/webControl/web-control_1.2.5.min.js"></script>
    <script type="module" src="/src/main.ts"></script>
    <script src="/src/utils/d3/d3.js" charset="utf-8"></script>
    <script src="/src/utils/d3/D3SvgOverlay.js"></script>
  </body>
</html>

最后我们开始构建本次所需要调用的组件封装功能

子组件结构

1. 模板部分

<template>
  <div class="play_windows" v-loading="loading" element-loading-background="rgba(122, 122, 122, 0.8)">
    <div class="tree-form">
      <el-tree
        ref="tree"
        :data="dataTree"
        :props="defaultProps"
        :highlight-current="true"
        @node-click="pitchOns"
      >
      <template #default="{ node, data }">
        <span class="custom-tree-node">
          {{ data.name }}
        </span>
      </template>
      </el-tree>
    </div>
    <div class="videosp" ref="videosp">
      <div id='corpvideo' ref="corpvideo"></div>
    </div>
  </div>
</template>

2. 脚本部分

2.1 导入依赖

<script setup lang="ts">
import { ref, onMounted, nextTick, defineProps, defineExpose, defineEmits, watch, onBeforeUnmount } from 'vue';
import { ElMessage } from 'element-plus'
import { videoallList } from '@/api/screenVideo/index'
import { getGetByCode } from "@/api/videoSurveillance/index";

2.2 定义属性和事件

const emit = defineEmits(["handleSpjkPOIClick"]);
const props = defineProps({
  playURL: String, // 视频url
  splitNum: Number, // 分屏播放，默认最大分屏4*4
  dataTree: Object, // 树 数据
  defaultProps: Object
});

2.3 定义变量

let dataTree = ref<any>(props.dataTree);
let defaultProps = ref<any>(props.defaultProps);
let loading = ref<Boolean>(false);
const corpvideo = ref<any>();
const videosp = ref<any>(null);
let width: any = 0;
let height: any = 0;
let oWebControl: any = null;
let initCount: any = 0;
let pubKey: any = '';

2.4 RSA加密

const setEncrypt = (value: any) => {
  let encrypt = new JSEncrypt();
  encrypt.setPublicKey(pubKey);
  return encrypt.encrypt(value);
}

2.5 初始化插件

const initPlugin = () => {
  nextTick(() => {
    width = videosp.value.offsetWidth;
    height = videosp.value.offsetHeight;
    oWebControl = new webControl({
      szPluginContainer: "corpvideo",
      iServicePortStart: 15900,
      iServicePortEnd: 15900,
      szClassId: "23BF3B0A-2C56-4D97-9C03-0CB103AA8F11",
      cbConnectSuccess: function () {
        oWebControl.JS_StartService("window", {
          dllPath: "./VideoPluginConnect.dll"
        }).then(function () {
          oWebControl.JS_CreateWnd("corpvideo", width, height).then(function () {
            init();
          });
        }, function () {});
      },
      cbConnectError: function () {
        oWebControl = null;
        webControl.JS_WakeUp("VideoWebPlugin://");
        initCount++;
        if (initCount < 3) {
          setTimeout(function () {
            initPlugin();
          }, 3000);
        } else {
          console.log("插件启动失败，请检查插件是否安装！");
        }
      },
      cbConnectClose: function (bNormalClose: any) {
        oWebControl = null;
        webControl.JS_WakeUp("VideoWebPlugin://");
        initCount++;
        if (initCount < 3) {
          setTimeout(function () {
            initPlugin();
          }, 3000);
        } else {
          console.log("插件启动失败，请检查插件是否安装！");
        }
      }
    });
  });
}

2.6 获取公钥

const getPubKey = (callback: any) => {
  oWebControl.JS_RequestInterface({
    funcName: "funcName",
    argument: JSON.stringify({
      keyLength: 1024
    })
  }).then((oData: any) => {
    if (oData.responseMsg.data) {
      pubKey = oData.responseMsg.data;
      callback();
    }
  });
}

2.7 初始化视频播放

const init = () => {
  getPubKey(() => {
    appkey = "appkey ";
    secret = setEncrypt("secret");
    ip = "ip ";
    playMode = 0;
    port = 443;
    snapDir = "D:\\SnapDir";
    videoDir = "D:\\VideoDir";
    layout = "1x1";
    enableHTTPS = 1;
    encryptedFields = 'secret';
    showToolbar = 1;
    showSmart = 1;
    buttonIDs = "0,16,256,257,258,259,260,512,513,514,515,516,517,768,769";
    oWebControl.JS_RequestInterface({
      funcName: "init",
      argument: JSON.stringify({
        appkey: appkey,
        secret: secret,
        ip: ip,
        playMode: playMode,
        port: port,
        snapDir: snapDir,
        videoDir: videoDir,
        layout: layout,
        enableHTTPS: enableHTTPS,
        encryptedFields: encryptedFields,
        showToolbar: showToolbar,
        showSmart: showSmart,
        buttonIDs: buttonIDs
      })
    }).then((oData: any) => {
      oWebControl.JS_Resize(width, height);
    });
  });
}

2.8 播放视频

const JSRequestInterface = (code: any) => {
  cameraIndexCode = code.replace(/(^\s*)/g, "").replace(/(\s*$)/g, "");
  oWebControl.JS_RequestInterface({
    funcName: "startPreview",
    argument: JSON.stringify({
      cameraIndexCode: cameraIndexCode,
      streamMode: streamMode,
      transMode: transMode,
      gpuMode: gpuMode,
      wndId: wndId
    })
  });
}

JSRequestInterface: 请求播放指定监控点的视频。

2.9 隐藏和显示窗口

const JSHideWnd = () => {
  oWebControl.JS_HideWnd();
  oWebControl.JS_DestroyWnd().then(function () {}, function () {});
}
const JSShowWnd = () => {
  initPlugin();
  oWebControl.JS_ShowWnd();
}

2.10 监听窗口关闭和调整大小

window.addEventListener('unload', JSHideWnd);
const getElementPosition = () => {
  width = window.innerWidth * 0.3;
  height = window.innerHeight * 0.56;
  oWebControl.JS_Resize(width, height);
};
window.addEventListener('resize', getElementPosition);

2.11 处理节点点击事件

const pitchOns = (e: any) => {
  if (!e || !e.self) {
    if (e.equipmentCoding) {
      handleAddChild(e);
    }
    return;
  }
  if (e.children) {
    emit("handleSpjkPOIClick", e.self.indexCode, '');
    return;
  } else {
    handleAddChild(e);
  }
}
const handleAddChild = (e: any) => {
  if (!e || !e.self) {
    if (e.equipmentCoding) {
      videoUrl(e.equipmentCoding);
    }
    return;
  }
  if (e.self.indexCode) {
    let params = {
      UnitIndexCode: e.self.indexCode,
    };
    videoallList(params).then((res: any) => {
      if (res.data.rows.length == 0) {
        emit("handleSpjkPOIClick", e.self.indexCode, '');
      } else {
        e.children = e.children || [];
        res.data.rows = res.data.rows.map((child: any) => ({
          ...child,
          name: child.equipmentName,
        }));
        res.data.rows.forEach((child: any) => {
          e.children.push(child);
        });
        (e as any).expanded = true;
      }
    });
  }
}
const videoUrl = (equipmentCoding: string) => {
  let params = {
    equipmentCoding: equipmentCoding,
  };
      JSRequestInterface(equipmentCoding)
}

2.12 暴露方法

defineExpose({
  initPlugin,
  JSHideWnd,
  JSShowWnd,
  JSRequestInterface
})

3. 样式部分

<style scoped lang="scss">
// 公共element样式
@import '@/styles/eleCustomize.scss';
/* 样式 */
.play_windows {
  display: flex;
  width: 100% !important;
  .tree-form {
    width: 18vw;
    height: 28vw;
    overflow: auto;
    padding: 0;
  }
}
.videosp {
  width: 32vw;
  height: 60vh !important;
  #corpvideo {
    width: 100% !important;
    height: 100% !important;
    margin-top: 0.5vh;
  }
  #player-container-0 {
    width: 100% !important;
    height: 100% !important;
  }
}
/* 屏幕宽度超过1920px时应用 */
@media (min-width: 8000px) {
  .play_windows {
    .tree-form {
      width: 10vw;
      height: 18vw;
    }
  }
  .videosp {
    width: 45vw;
  }
}
::v-deep(.el-radio-button__inner) {
  width: 2vw;
  height: 1vw;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 0.6vw;
}
.video-button {
  width: 3vw;
  height: 1vw;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 0.6vw;
}
::v-deep(.el-radio-button__inner) {
  background: transparent !important;
  color: white !important;
  border: 0 !important;
  display: flex;
  align-items: center;
  height: 3.5vh !important;
  color: white !important;
  margin: 0.2vw;
  font-size: 1.6vh !important;
  background: transparent !important;
  border: 0.1vw solid #009392 !important;
  border-radius: 0.2vw !important;
}
::v-deep(.el-radio-button__original-radio:checked + .el-radio-button__inner) {
  background: linear-gradient(90deg, rgba(0, 96, 204, 0.2) 0%, rgba(0, 165, 189, 0.6) 100%) !important;
  color: white !important;
  border-color: none !important;
}
</style>

子组件 ScreenMonitoring 主要实现了监控点的树形结构展示和视频播放控制。通过 el-tree 组件展示监控点的树形结构，并在节点被点击时调用视频播放插件的初始化和播放方法。子组件提供了 JSRequestInterface 方法请求视频流，initialize 方法初始化视频播放，以及 JSHideWnd 方法停止视频播放，确保视频监控功能的完整性和可控性。

父组件调用

1. 模板部分

<template>
  <screenVideoDialog 
    v-model="dialogVideo" 
    title="公安监控" 
    width="55%"  
    @close="onCloseDialog" 
    @open="onOpenDialog"
    :draggable="false"
  >
    <div class="my_dialog_slot" style="height:60vh;" v-if="dialogVideo">
      <ScreenMonitoring 
        ref="screenmonitoring" 
        :dataTree="dataTree" 
        :defaultProps="defaultProps" 
        @handleSpjkPOIClick="handleSpjkPOIClick"  
      />
    </div>
  </screenVideoDialog>
</template>

2. 脚本部分

<script setup lang="ts">
import { ref } from 'vue';
import screenVideoDialog from '@/components/Dialog/screenVideoDialog.vue';
import ScreenMonitoring from '@/components/Dialog/screenMonitoring.vue';
const dialogVideo = ref(false);
const dataTree = ref([
  // 树形结构数据
]);
const defaultProps = ref({
  children: 'children',
  label: 'label'
});
const screenmonitoring = ref<InstanceType<typeof ScreenMonitoring> | null>(null);
// 处理监控点点击事件
const handleSpjkPOIClick = (poiId: string, coord: string) => {
  let params = {
    UnitIndexCode: poiId
  };
  screenmonitoring.value?.JSRequestInterface(poiId);
  // getGetByCodes(params).then(res => {
  //   setTimeout(() => {
  //     screenmonitoring.value?.initialize(res.data.urls[0], res.data.urls);
  //   }, 1000);
  // });
};
// 关闭对话框时停止视频
const onCloseDialog = (e: any) => {
  screenmonitoring.value?.JSHideWnd();
};
// 打开对话框时初始化视频
const onOpenDialog = (e: any) => {
  screenmonitoring.value?.initPlugin();
};
</script>

3. 样式部分

<style scoped>
.my_dialog_slot {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
}
</style>

通过上述代码，我们在父组件中实现了视频监控对话框的显示和隐藏，并在对话框打开和关闭时调用子组件的相应方法，以控制视频的播放和停止。

本文详细介绍了如何使用 Vue 3 框架集成海康Web插件实现视频监控功能。通过定义属性、事件、变量，以及编写初始化、播放视频、处理节点点击事件等方法，我们成功实现了视频监控系统的前端部分。同时，通过样式部分的定制，确保了良好的用户体验。希望本文对读者在开发类似项目时有所帮助。

到此这篇关于Vue 3集成海康Web插件实现视频监控的文章就介绍到这了,更多相关Vue海康Web插件视频监控内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家！

您可能感兴趣的文章:
阅读全文