前言
electron+vuecli3 实现设置打印机，静默打印小票功能
网上相关的资料比较少，这里给大家分享一下，希望大家可以少踩一些坑
github地址
必须要强调一下的是electron的版本必须是3.0.0不能，我尝试了4和5都没有实现
效果图
使用
git clone https://github.com/sunnie1992/electron-vue-print-demo.git npm install npm run electron:serve
实现
操作思路
1.用户点击打印
2.查询本地electron-store(用来向本地存储，读取数据)是否存打印机名称
3.已经设置，直接打印
4.没有设置，弹出设置打印机框
5.用户设置好确认后打印
首页App.vue引入了两个组件，一个是主动设置打印机的弹出printDialog
另外一个是打印组件，打印是通过webview将需要打印的内容渲染到html页面然后就能打印了
<template>
<div id=\"app\">
<el-button type=\"primary\" @click=\"showPrint\">设置打印机</el-button>
<printDialog :dialog-visible=\"dialogVisible\" @cancel=\"handlePrintDialogCancel\" />
<pinter ref=\"print\" :html-data=\"HtmlData\"></pinter>
<el-table :data=\"tableData\" style=\"width: 100%\">
<el-table-column prop=\"date\" label=\"日期\" width=\"180\" column-key=\"date\">
</el-table-column>
<el-table-column prop=\"name\" label=\"姓名\" width=\"180\">
</el-table-column>
<el-table-column prop=\"address\" label=\"地址\">
</el-table-column>
<el-table-column label=\"操作\">
<template slot-scope=\"scope\">
<el-button type=\"primary\" @click=\"doPrint(scope.row)\">打印</el-button>
</template>
</el-table-column>
</el-table>
</div>
</template>
<script>
import { ipcRenderer } from \'electron\'
import printDialog from \'./components/PrintDialog.vue\'
import Pinter from \'./components/pinter.vue\'
export default {
name: \'App\',
components: {
Pinter,
printDialog
},
data() {
return {
dialogVisible: false,
HtmlData: \'\',
printList: [],
tableData: [{
date: \'2016-05-02\',
name: \'我是小仙女\',
address: \'上海市浦东新区\',
tag: \'家\'
}, {
date: \'2016-05-04\',
name: \'我是小仙女1\',
address: \'上海市浦东新区\',
tag: \'公司\'
}, {
date: \'2016-05-01\',
name: \'我是小仙女2\',
address: \'上海市浦东新区\',
tag: \'家\'
}, {
date: \'2016-05-03\',
name: \'我是小仙女3\',
address: \'上海市浦东新区\',
tag: \'公司\'
}]
}
},
mounted() {
},
methods: {
showPrint() {
this.dialogVisible = true
},
handlePrintDialogCancel() {
this.dialogVisible = false
},
doPrint(row) {
this.HtmlData = row.name
this.$refs.print.print(row.name)
}
}
}
</script>
<style>
#app {
font-family: \'Avenir\', Helvetica, Arial, sans-serif;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
text-align: center;
color: #2c3e50;
margin-top: 60px;
}
</style>
APP.VUE 每次点击打印按钮后触发组件的print方法并将数据传过去 this.$refs.print.print(row.name)
printer.vue 查询打印机，然后调用打印方法printRender。
<template>
<div class=\"container\">
<webview id=\"printWebview\" ref=\"printWebview\" :src=\"fullPath\" nodeintegration />
<printDialog :dialog-visible=\"dialogVisible\" @cancel=\"handlePrintDialogCancel\" @select-print=\"printSelectAfter\" />
</div>
</template>
<script>
import { ipcRenderer } from \'electron\'
import path from \'path\'
import printDialog from \'./PrintDialog.vue\'
export default {
name: \'Pinter\',
components: {
printDialog
},
props: {
// HtmlData: {
// type: String,
// default: \'\',
// },
},
data() {
return {
printList: [],
dialogVisible: false,
printDeviceName: \'\',
fullPath: path.join(__static, \'print.html\'),
messageBox: null,
htmlData: \'\'
}
},
mounted() {
const webview = this.$refs.printWebview
webview.addEventListener(\'ipc-message\', (event) => {
if (event.channel === \'webview-print-do\') {
console.log(this.printDeviceName)
webview.print(
{
silent: true,
printBackground: true,
deviceName: this.printDeviceName
},
(data) => {
this.messageBox.close()
if (data) {
this.$emit(\'complete\')
} else {
this.$emit(\'cancel\')
}
},
)
}
})
},
methods: {
print(val) {
this.htmlData = val
this.getPrintListHandle()
},
// 获取打印机列表
getPrintListHandle() {
// 改用ipc异步方式获取列表，解决打印列数量多的时候导致卡死的问题
ipcRenderer.send(\'getPrinterList\')
ipcRenderer.once(\'getPrinterList\', (event, data) => {
// 过滤可用打印机
this.printList = data.filter(element => element.status === 0)
// 1.判断是否有打印服务
if (this.printList.length <= 0) {
this.$message({
message: \'打印服务异常,请尝试重启电脑\',
type: \'error\'
})
this.$emit(\'cancel\')
} else {
this.checkPrinter()
}
})
},
// 2.判断打印机状态
checkPrinter() {
// 本地获取打印机
const printerName = this.$electronStore.get(\'printForm\') || \'\'
const printer = this.printList.find(device => device.name === printerName)
// 有打印机设备并且状态正常直接打印
if (printer && printer.status === 0) {
this.printDeviceName = printerName
this.printRender()
} else if (printerName === \'\') {
this.$message({
message: \'请先设置其他打印机\',
type: \'error\',
duration: 1000,
onClose: () => {
this.dialogVisible = true
}
})
this.$emit(\'cancel\')
} else {
this.$message({
message: \'当前打印机不可用,请重新设置\',
type: \'error\',
duration: 1000,
onClose: () => {
this.dialogVisible = true
}
})
}
},
handlePrintDialogCancel() {
this.$emit(\'cancel\')
this.dialogVisible = false
},
printSelectAfter(val) {
this.dialogVisible = false
this.$electronStore.set(\'printForm\', val.name)
this.printDeviceName = val.name
this.printRender()
},
printRender(html) {
this.messageBox = this.$message({
message: \'打印中，请稍后\',
duration: 0
})
// 获取<webview>节点
const webview = this.$refs.printWebview
// 发送信息到<webview>里的页面
webview.send(\'webview-print-render\', {
printName: this.printDeviceName,
html: this.htmlData
})
}
}
}
</script>
<style scoped>
.container {
position: fixed;
right: -500px;
}
</style>
public/print.html渲染webview页面成功后发送打印指令
<script>
const { ipcRenderer } = require(\'electron\')
ipcRenderer.on(\'webview-print-render\', (event, info) => {
// 执行渲染
document.getElementById(\'bd\').innerHTML = info.html
ipcRenderer.sendToHost(\'webview-print-do\')
})
</script>
这里用到了electron-store存取本地数据
background.js 引入 初始化挂载在global
import ElectronStore from \'electron-store\'
// ElectronStore 默认数据
import electronDefaultData from \'./config/electron-default-data\'
let electronStore
app.on(\'ready\', async() => {
// 初始化配置文件
electronStore = new ElectronStore({
defaults: electronDefaultData,
cwd: app.getPath(\'userData\')
})
global.electronStore = electronStore
})
src/plugins/inject.js
注册$electronStore
// eslint-disable-next-line
import { remote } from \'electron\'
export default {
/* eslint no-param-reassign: \"error\" */
install(Vue) {
Vue.prototype.$electronStore = remote.getGlobal(\'electronStore\')
}
}
然后你就可以在vue文件里读取了
this.$electronStore.get(\’printForm\’) 和 this.$electronStore.set(\’printForm\’, val.name)
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
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