vue-qrcode-reader 扫一扫二维码插件
此插件必须访问 https 才可访问摄像头
1、安装插件
因是 vue2 版本所以根据官网提示
https://github.com/gruhn/vue-qrcode-readerHow to make it work with Vue 2?
Support is dropped but you can downgrade to vue-qrcode-reader v3.* or lower.
# 为以下安装npm install --save vue-qrcode-reader@3
2、创建组件
-
在 src 下面的 components 创建 qrcode.vue
<template>
<div>
<div class="ku-scanner">
<qrcode-stream
v-show="qrcode"
:camera="camera"
:torch="torchActive"
@decode="onDecode"
@init="onInit"
>
<div class="ku-scanner-content">
<div class="ku-scanner-tooltip">
将二维码/条码放入框内，即自动扫描 </div>
<div class="ku-scanner-section">
<div class="ku-scanner-section-animation-line"></div>
<div class="ku-scanner-section-angle"></div>
</div>
</div>
</qrcode-stream>
</div>
<div class="ku-scanner-error">错误信息:{{ error }}</div>
<div class="ku-scanner-decode-result">扫描结果:{{ result }}</div>
<div>
<van-button type="primary" @click="openCamera">打开相机</van-button>
<van-button type="info" @click="closeCamera">关闭相机</van-button>
<van-button type="default" @click="openFlash">打开手电筒</van-button>
<van-button type="warning" @click="switchCamera">相机反转</van-button>
</div>
</div></template>
<script>// 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: 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 lang="scss">.ku-scanner-error { font-weight: bold; font-size: 14px; color: red;
}.ku-scanner-decode-result { font-size: 14px; color: #000;
}.ku-scanner { height: 282px;
.ku-scanner-content { 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: 281px; position: relative; background-color: rgba(18, 18, 18, 0);
// 提示信息
.ku-scanner-tooltip { width: 100%; height: 35px; line-height: 35px; font-size: 14px; text-align: center; /* color: #f9f9f9; */
margin: 0 auto; position: absolute; top: 0; left: 0; color: #ffffff;
} .ku-scanner-section { 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);
// 装饰角
&:after { content: ""; display: block; position: absolute; width: 12px; height: 12px; border: 0.2rem solid transparent; top: 0; border-top-color: #00ff33; right: 0; border-right-color: #00ff33;
}
&:before { content: ""; display: block; position: absolute; width: 12px; height: 12px; border: 0.2rem solid transparent; top: 0; border-top-color: #00ff33; left: 0; border-left-color: #00ff33;
}
// 装饰角 .ku-scanner-section-angle {
&:after { content: ""; display: block; position: absolute; width: 12px; height: 12px; border: 0.2rem solid transparent; bottom: 0; border-bottom-color: #00ff33; right: 0; border-right-color: #00ff33;
}
&:before { content: ""; display: block; position: absolute; width: 12px; height: 12px; border: 0.2rem solid transparent; bottom: 0; border-bottom-color: #00ff33; left: 0; border-left-color: #00ff33;
}
}
// 扫描活动线 .ku-scanner-section-animation-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;
}
}
}
}
// 扫描活动线--上下 动画
@keyframes radar-beam {
0% { transform: translateY(-100%);
}
100% { transform: translateY(0);
}
}
</style>
-
解决 vue 项目本地访问 https
安装
npm install -D @vitejs/plugin-basic-ssl# or# yarn add -D @vitejs/plugin-basic-ssl# or# pnpm add -D @vitejs/plugin-basic-ssl
在 vite.config.js 或者 vite.config.ts 中配置：
import basicSsl from '@vitejs/plugin-basic-ssl' // 引入server: { // ...
proxy: { // ...
}, https: true, // 安装basicSsl后，这里可设置可不设置
}, plugins: [ // ...
basicSsl(),
]
重启服务
npm run dev# or# yarn dev# or# pnpm run dev
启动后可访问 https
➜ Local: https://localhost:8001/ ➜ Network: https://10.100.251.23:8001/ ➜ Network: https://192.168.3.87:8001/
链接：https://www.jianshu.com/p/3ab2daa27469