时间:2022-05-13 13:51:10 | 栏目:vue | 点击:次
这个插件只能在https协议下才能访问,http协议不好使,最好用vue2,vue3容易报错!!!!!
通过vue的方式,实现扫码功能
参考文档:vue-qrcode-reader去官网–>官方文档
npm install --save vue-qrcode-reader
因为可能多个页面都会用到,所以弄成了组件
(1)在src下面的components创建qrcode.vue
(2)代码实现
// qrcode.vue <template> <div> <!-- <p class="error">{{ error }}</p> --> <!--错误信息--> <!-- <p class="decode-result"> 扫描结果: <b>{{ result }}</b> </p> --> <!--扫描结果--> <!-- <p @click="openCamera">打开相机</p> <div v-show="show" class="cameraMessage"> <p @click="closeCamera">关闭相机</p> <p @click="openFlash">打开手电筒</p> <p @click="switchCamera">相机反转</p> </div> --> <qrcode-stream v-show="qrcode" :camera="camera" :torch="torchActive" @decode="onDecode" @init="onInit" > <div> <div class="qr-scanner"> <div class="box"> <div class="line"></div> <div class="angle"></div> </div> <div class="txt"> 将二维码/条码放入框内,即自动扫描 <div class="myQrcode">我的二维码</div> </div> </div> </div> </qrcode-stream> </div> </template> <script> // 下载插件 // cnpm install --save vue-qrcode-reader // 引入 import { QrcodeStream } from 'vue-qrcode-reader'; export default { // 注册 components: { QrcodeStream }, data() { return { result: '', // 扫码结果信息 error: '', // 错误信息 // show: false, // qrcode: false, qrcode: true, torchActive: false, camera: 'front', }; }, methods: { onDecode(result) { console.log(result); this.result = result; }, async onInit(promise) { const { capabilities } = await promise; const TORCH_IS_SUPPORTED = !!capabilities.torch; try { await promise; } catch (error) { if (error.name === 'NotAllowedError') { this.error = 'ERROR: 您需要授予相机访问权限'; } else if (error.name === 'NotFoundError') { this.error = 'ERROR: 这个设备上没有摄像头'; } else if (error.name === 'NotSupportedError') { this.error = 'ERROR: 所需的安全上下文(HTTPS、本地主机)'; } else if (error.name === 'NotReadableError') { this.error = 'ERROR: 相机被占用'; } else if (error.name === 'OverconstrainedError') { this.error = 'ERROR: 安装摄像头不合适'; } else if (error.name === 'StreamApiNotSupportedError') { this.error = 'ERROR: 此浏览器不支持流API'; } } }, // 打开相机 // openCamera() { // this.camera = 'rear' // this.qrcode = true // this.show = true // }, // 关闭相机 // closeCamera() { // this.camera = 'off' // this.qrcode = false // this.show = false // }, // 打开手电筒 // openFlash() { // switch (this.torchActive) { // case true: // this.torchActive = false // break // case false: // this.torchActive = true // break // } // }, // 相机反转 // switchCamera() { // // console.log(this.camera); // switch (this.camera) { // case 'front': // this.camera = 'rear' // console.log(this.camera) // break // case 'rear': // this.camera = 'front' // console.log(this.camera) // break // } // } }, }; </script> <style scoped> .error { font-weight: bold; color: red; } .cameraMessage { width: 100%; height: 60px; } .qr-scanner { background-image: linear-gradient( 0deg, transparent 24%, rgba(32, 255, 77, 0.1) 25%, rgba(32, 255, 77, 0.1) 26%, transparent 27%, transparent 74%, rgba(32, 255, 77, 0.1) 75%, rgba(32, 255, 77, 0.1) 76%, transparent 77%, transparent ), linear-gradient( 90deg, transparent 24%, rgba(32, 255, 77, 0.1) 25%, rgba(32, 255, 77, 0.1) 26%, transparent 27%, transparent 74%, rgba(32, 255, 77, 0.1) 75%, rgba(32, 255, 77, 0.1) 76%, transparent 77%, transparent ); background-size: 3rem 3rem; background-position: -1rem -1rem; width: 100%; /* height: 100%; */ height: 100vh; /* height: 288px; */ position: relative; background-color: #1110; /* background-color: #111; */ } /* .qrcode-stream-wrapper { display: flex; justify-content: center; align-items: center; margin-top: 82px; clear: both; } */ /* .qrcode-stream-wrapper >>> .qrcode-stream-camera { width: 213px; height: 210px; clear: both; margin-top: 39px; } */ .qr-scanner .box { width: 213px; height: 213px; position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); overflow: hidden; border: 0.1rem solid rgba(0, 255, 51, 0.2); /* background: url('http://resource.beige.world/imgs/gongconghao.png') no-repeat center center; */ } .qr-scanner .txt { width: 100%; height: 35px; line-height: 35px; font-size: 14px; text-align: center; /* color: #f9f9f9; */ margin: 0 auto; position: absolute; top: 70%; left: 0; } .qr-scanner .myQrcode { text-align: center; color: #00ae10; } .qr-scanner .line { height: calc(100% - 2px); width: 100%; background: linear-gradient(180deg, rgba(0, 255, 51, 0) 43%, #00ff33 211%); border-bottom: 3px solid #00ff33; transform: translateY(-100%); animation: radar-beam 2s infinite alternate; animation-timing-function: cubic-bezier(0.53, 0, 0.43, 0.99); animation-delay: 1.4s; } .qr-scanner .box:after, .qr-scanner .box:before, .qr-scanner .angle:after, .qr-scanner .angle:before { content: ''; display: block; position: absolute; width: 3vw; height: 3vw; border: 0.2rem solid transparent; } .qr-scanner .box:after, .qr-scanner .box:before { top: 0; border-top-color: #00ff33; } .qr-scanner .angle:after, .qr-scanner .angle:before { bottom: 0; border-bottom-color: #00ff33; } .qr-scanner .box:before, .qr-scanner .angle:before { left: 0; border-left-color: #00ff33; } .qr-scanner .box:after, .qr-scanner .angle:after { right: 0; border-right-color: #00ff33; } @keyframes radar-beam { 0% { transform: translateY(-100%); } 100% { transform: translateY(0); } } </style>
(3)在需要扫码的页面引入
// import qrcode from '@/components/qrcode.vue';
(4)注册组件
// components: { 'vue-qrcode': qrcode, },
(5)使用组件
// 在需要展示二维码的地方进行渲染 <vue-qrcode /> //如果上面这个不好使,可以用下面这个 <vue-qrcode></vue-qrcode>