vue調用瀏覽器攝像頭需要在https協議下面進行,原則在下面加上devServer:{https:true},
然后輸入例如:https://10.120.19.123:8080/#/的網址即可訪問,但是會提醒不是安全使用 https 出現 “您的連接不是私密連接” 的問題。大部分時候只要點擊“高級”,然后選擇依然繼續就行了,但是也可能出現如下的情況:可參見:https://www.jianshu.com/p/5461b6ecb94f
這個時候你可能已經高興可以正常訪問地址了,但是很遺憾,在登陸接口請求的時候卻報錯接口跨域,沒法正常請求接口。
於是放棄了
------------------------以上可以跳過,僅代表實驗思想。撤回devServer:{https:true}的設置-----------------
https://blog.csdn.net/weixin_46045222/article/details/112766551這個真正解決了不在https的情況下也能正常打開攝像頭權限。
即:在瀏覽器地址欄輸入:chrome://flags/#unsafely-treat-insecure-origin-as-secure
就會出現頁面【里面輸入對應項目地址(需要用攝像頭項目地址)】輸入:http://10.120.19.123:8080/
這個時候再回到項目最初狀態下:正常訪問,再調用攝像頭,瀏覽器就會詢問打開攝像頭了,完美解決!
再看看設置里面攝像頭以及打開啦。如何實現掃碼功能及樣式,可見我上篇文章:https://www.cnblogs.com/Fancy1486450630/p/15711014.html
-------------------------------2022/4/14更新------------------------------
針對devServer:{https:true}來解決這掃碼問題。我們繼續來針對https來做一版:參考文檔:https://blog.csdn.net/weixin_41856395/article/details/120597131?spm=1001.2101.3001.6650.1&utm_medium=distribute.pc_relevant.none-task-blog-2~default~CTRLIST~Rate-1.pc_relevant_antiscanv2&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2~default~CTRLIST~Rate-1.pc_relevant_antiscanv2&utm_relevant_index=2
1:vue.config.js文件:
module.exports = {
devServer: {
port: 8080,
https: true,
},
};
2:安裝npm install @zxing/library --save
3:需要在頁面有點擊掃碼的地方:
<div @click="scanCode">點擊掃碼</div>
<div>掃碼結果:{{codeText}}</div>
scanCode(){
// this.isShow=true
console.log('瀏覽器信息', navigator.userAgent);
this.$router.push({
path: '/qrcode'
});
},
4:路由頁面router.js配置
{
name: 'qrcode',//掃碼
path: '/qrcode',
component: () => import('./view/qrcode'),
meta: {
title: '掃碼',
},
},
5:qrcode.vue頁面封裝如下:
<template>
<div class="page-scan">
<!--返回-->
<van-nav-bar title="掃描二維碼/條形碼" fixed
@click-left="clickIndexLeft()"
class="scan-index-bar">
<template #left>
<van-icon name="arrow-left" size="18" color="#fff"/>
<span style="color: #fff"> 取消 </span>
</template>
</van-nav-bar>
<!-- 掃碼區域 -->
<video ref="video" id="video" class="scan-video" autoplay></video>
<!-- 提示語 -->
<div v-show="tipShow" class="scan-tip"> {{tipMsg}} </div>
</div>
</template>
<script>
import { BrowserMultiFormatReader } from '@zxing/library';
import { Dialog, Notify } from 'vant';
export default {
name: 'scanCodePage',
data() {
return {
loadingShow: false,
codeReader: null,
scanText: '',
vin: null,
tipMsg: '正在嘗試識別....',
tipShow: false
}
},
created() {
this.codeReader = new BrowserMultiFormatReader();
this.openScan();
},
destroyed(){
this.codeReader.reset();
},
watch: {
'$route'(to, from) {
if(to.path == '/scanCodePage'){
this.codeReader = new BrowserMultiFormatReader();
this.openScanTwo();
}
}
},
methods: {
async openScan() {
this.codeReader.getVideoInputDevices().then((videoInputDevices) => {
this.tipShow = true;
this.tipMsg = '正在調用攝像頭...';
console.log('videoInputDevices', videoInputDevices);
// 默認獲取第一個攝像頭設備id
let firstDeviceId = videoInputDevices[0].deviceId;
// 獲取第一個攝像頭設備的名稱
const videoInputDeviceslablestr = JSON.stringify(videoInputDevices[0].label);
if (videoInputDevices.length > 1) {
// 判斷是否后置攝像頭
if (videoInputDeviceslablestr.indexOf('back') > -1) {
firstDeviceId = videoInputDevices[0].deviceId;
} else {
firstDeviceId = videoInputDevices[1].deviceId;
}
}
this.decodeFromInputVideoFunc(firstDeviceId);
}).catch(err => {
this.tipShow = false;
console.error(err);
});
},
async openScanTwo() {
this.codeReader = await new BrowserMultiFormatReader();
this.codeReader.getVideoInputDevices().then((videoInputDevices) => {
this.tipShow = true;
this.tipMsg = '正在調用攝像頭...';
console.log('videoInputDevices', videoInputDevices);
// 默認獲取第一個攝像頭設備id
let firstDeviceId = videoInputDevices[0].deviceId;
// 獲取第一個攝像頭設備的名稱
const videoInputDeviceslablestr = JSON.stringify(videoInputDevices[0].label);
if (videoInputDevices.length > 1) {
// 判斷是否后置攝像頭
if (videoInputDeviceslablestr.indexOf('back') > -1) {
firstDeviceId = videoInputDevices[0].deviceId;
} else {
firstDeviceId = videoInputDevices[1].deviceId;
}
}
this.decodeFromInputVideoFunc(firstDeviceId);
}).catch(err => {
this.tipShow = false;
console.error(err);
});
},
decodeFromInputVideoFunc(firstDeviceId) {
this.codeReader.reset(); // 重置
this.scanText = '';
this.codeReader.decodeFromInputVideoDeviceContinuously(firstDeviceId, 'video', (result, err) => {
this.tipMsg = '正在嘗試識別...';
this.scanText = '';
if (result) {
console.log('掃描結果', result);
this.scanText = result.text;
localStorage.setItem('codeText',result.text)
this.clickIndexLeft()
return
if (this.scanText) {
this.tipShow = false;
// 這部分接下去的代碼根據需要,讀者自行編寫了
// this.$emit("ok", result.text)
// this.$store.commit('app/SET_SCANTEXT', result.text);
// console.log('已掃描的小票列表', this.$store.getters.scanTextArr);
}
}
if (err && !(err)) {
this.tipMsg = '識別失敗';
setTimeout(() => {
this.tipShow = false;
}, 2000)
console.error(err);
}
});
},
clickIndexLeft(){ // 返回上一頁
this.codeReader = null;
this.$router.back();
this.$destroy();//這個報錯我自行去掉了
}
}
}
</script>
<style lang="less">
.scan-index-bar{
background-image: linear-gradient( -45deg, #42a5ff ,#59cfff);
}
.van-nav-bar__title{
color: #fff !important;
}
.scan-video{
height: 80vh;
}
.scan-tip{
width: 100vw;
text-align: center;
margin-bottom: 10vh;
color: white;
font-size: 5vw;
}
.page-scan{
overflow-y: hidden;
background-color: #363636;
}
</style>