vue2踩坑之项目：生成二维码使用vue-print-nb打印二维码

1.

vue2安装 npm install vue-print-nb --save

vue3安装 npm install vue3-print-nb --save

 2.

//vue2 引入方式 全局 main.js

import Print from 'vue-print-nb'

Vue.use(Print)

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//vue2 引入方式 按需

import print from 'vue-print-nb'

directives: { print} //自定义指令中注册

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//vue3 引入方式 全局 main.js

import { createApp } from 'vue'

import App from './App.vue'

import print from 'vue3-print-nb'

const app = createApp(App)app.use(print)app.mount('#app')

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//vue3 引入方式 按需

import print from 'vue3-print-nb'

directives: { print } //自定义指令中注册 

//html<el-button @click="clickPrint(form)">打印</el-button><el-drawer title="图片打印" :visible.sync="drawer" :direction="direction" :before-close="handleClose" size="80%"><div style="position: absolute;right: 110px;top: 15px;padding-left: 30px;"><!-- <el-button @click="drawer = false">取消</el-button> --><el-button type="primary" v-print="print">打印</el-button></div><div id="printView"><div class="img-content-first" :class=" index >= 5?'img-content':'img-content-first'" v-for="(item,index) in erwmList" :key="index"><img :src=item.imgBase class="img" /><div class="text">{{ item.connectorCode }}</div></div></div></el-drawer>//script
// 单组件引用打印插件
import print from 'vue-print-nb'
import {getxxxx} from "../../api/xxxx/xxxx.js" // 二维码接口//data
// 抽屉 批量打印
data() {return {//表单筛选条件form:{status:'',name:'',//....},drawer: false,direction: 'rtl',erwmList:[], //二维码列表erweimaImg: '',// 打印插件print: {id: "printView", //打印的区域的id名popTitle: "管理平台", // 打印配置页上方标题extraHead: "", //最上方的头部文字，附加在head标签上的额外标签,使用逗号分隔extraCss: "",},}
}//js// 批量打印 点击事件 clickPrint (item) {// console.log(item,'ss');if ((item.status=== "" || null || undefined) &&(item.name === ""||null||undefined)) {this.drawer = falsethis.$alert('', '请选择筛选条件！', {confirmButtonText: '确定',});} else {getxxxx(item).then(res => {//console.log(res);this.erwmList= resif (res) {this.drawer = true}})}},// 批量打印 抽屉关闭事件handleClose (done) {this.drawer = false// this.$confirm('确认关闭？')//   .then(_ => {//     done();//   })//   .catch(_ => {});},//css
<style scoped lang="less">
.......img-content-first{display: inline-block;border: 2px solid #000;margin: 0 0 0 30px;.text{margin: 0 auto;text-align: center;color: #000;font-size: 18px;margin-top: -24px;}}.img-content{display: inline-block;border: 2px solid #000;margin: 50px 0 0 30px;.text{margin: 0 auto;text-align: center;color: #000;font-size: 18px;margin-top: -24px;}}// @media print {//   #print .img-content {//     width: 150px;//     height: 150px;// }// }
</style><!-- 添加独立style标签 -->
<style media="print" lang="less">@page {size: auto;}@media print {// html {//   zoom: 70%; //设置打印页面的缩放，大小//    margin: 0 auto;// }#printView .img-content-first{border: 2px solid #000;// width: 190px;height: 185px;margin: 10px 0 0 15px;}#printView .img-content{border: 2px solid #000;// width: 190px;height: 185px;margin: 30px 0 0 15px;}#printView .img{// width: 190px;height: 180px;}#printView .text{margin: 0 auto;text-align: center;color: #000;font-size: 18px;margin-top: -24px;}
}

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