|
|
<template>
|
|
|
<view>
|
|
|
<button @click="discoveryPrinter">搜索打印机</button>
|
|
|
<button @click="stopDiscoveryPrinter">停止搜索打印机</button>
|
|
|
<view>选中的设备：{{deviceId}}</view>
|
|
|
<view class="text-red">设备列表</view>
|
|
|
<radio-group @change="radioChange">
|
|
|
<label class="uni-list-cell uni-list-cell-pd" v-for="(item, index) in devices" :key="index">
|
|
|
<view>
|
|
|
<radio :value="item.deviceId" />{{item.name}}({{item.deviceId}})
|
|
|
</view>
|
|
|
</label>
|
|
|
</radio-group>
|
|
|
|
|
|
<view class="text-red">设备服务列表</view>
|
|
|
<radio-group @change="radioChange2">
|
|
|
<label class="uni-list-cell uni-list-cell-pd" v-for="(item, index) in serverList" :key="index">
|
|
|
<view>
|
|
|
<radio :value="item.uuid" />{{item.uuid}}
|
|
|
</view>
|
|
|
</label>
|
|
|
</radio-group>
|
|
|
|
|
|
<view class="text-red">特征值</view>
|
|
|
<radio-group @change="radioChange3">
|
|
|
<label class="uni-list-cell uni-list-cell-pd" v-for="(item, index) in characteristics" :key="index">
|
|
|
<view>
|
|
|
<radio :value="item.uuid" />{{item.uuid}}(write:{{item.properties.write}} notify:{{item.properties.notify}} indicate:{{item.properties.indicate}})
|
|
|
</view>
|
|
|
</label>
|
|
|
</radio-group>
|
|
|
|
|
|
<button @click="writeBLECharacteristicValue">打印</button>
|
|
|
</view>
|
|
|
</template>
|
|
|
|
|
|
<script>
|
|
|
import PrinterJobs from './print/printerjobs.js'
|
|
|
import printerUtil from './print/printerutil.js'
|
|
|
export default {
|
|
|
name: 'xun_bluetoothPrint',
|
|
|
data () {
|
|
|
return {
|
|
|
devices: [],
|
|
|
deviceId: '',
|
|
|
serverList: [],
|
|
|
serviceId: '',
|
|
|
characteristics: [],
|
|
|
characteristicId: ''
|
|
|
}
|
|
|
},
|
|
|
mounted () {
|
|
|
// 初始化蓝牙模块
|
|
|
this.openBluetoothAdapter()
|
|
|
},
|
|
|
methods: {
|
|
|
openBluetoothAdapter () {
|
|
|
var _this = this
|
|
|
uni.openBluetoothAdapter({
|
|
|
complete (e) {
|
|
|
console.log(e);
|
|
|
if (!e.errCode) {
|
|
|
console.log('初始化完成')
|
|
|
} else if (e.errCode == 10001) {
|
|
|
uni.showToast({
|
|
|
icon: 'none',
|
|
|
title: '请打开手机蓝牙'
|
|
|
})
|
|
|
} else {
|
|
|
uni.showToast({
|
|
|
icon: 'none',
|
|
|
title: e.errMsg
|
|
|
})
|
|
|
}
|
|
|
}
|
|
|
})
|
|
|
},
|
|
|
// 开始搜寻附近的蓝牙外围设备
|
|
|
discoveryPrinter () {
|
|
|
var _this = this
|
|
|
_this.devices = []
|
|
|
uni.startBluetoothDevicesDiscovery({
|
|
|
complete (e) {
|
|
|
console.log(e)
|
|
|
if (e.errMsg == "startBluetoothDevicesDiscovery:ok") {
|
|
|
// ArrayBuffer转16进度字符串示例
|
|
|
uni.onBluetoothDeviceFound(devices => {
|
|
|
console.log(devices)
|
|
|
_this.devices.push(devices.devices[0])
|
|
|
})
|
|
|
}
|
|
|
}
|
|
|
})
|
|
|
},
|
|
|
// 停止搜寻附近的蓝牙外围设备
|
|
|
stopDiscoveryPrinter () {
|
|
|
uni.stopBluetoothDevicesDiscovery()
|
|
|
},
|
|
|
radioChange (e) {
|
|
|
console.log(e)
|
|
|
this.deviceId = e.target.value
|
|
|
this.serviceId = ''
|
|
|
this.serverList = []
|
|
|
this.characteristics = []
|
|
|
this.characteristicId = ''
|
|
|
//连接蓝牙
|
|
|
this.connect()
|
|
|
},
|
|
|
radioChange2 (e) {
|
|
|
console.log(e)
|
|
|
this.serviceId = e.target.value
|
|
|
this.characteristics = []
|
|
|
this.characteristicId = ''
|
|
|
// 获取蓝牙特征值
|
|
|
this.getBLEDeviceCharacteristics()
|
|
|
},
|
|
|
radioChange3 (e) {
|
|
|
console.log(e)
|
|
|
this.characteristicId = e.target.value
|
|
|
},
|
|
|
connect () {
|
|
|
var _this = this
|
|
|
uni.createBLEConnection({
|
|
|
deviceId: _this.deviceId,
|
|
|
complete (e) {
|
|
|
if (!e.errCode) {
|
|
|
//获取蓝牙设备所有服务(service)。
|
|
|
_this.getBLEDeviceServices()
|
|
|
} else {
|
|
|
uni.showToast({
|
|
|
icon: 'none',
|
|
|
title: '连接设备失败'
|
|
|
})
|
|
|
}
|
|
|
}
|
|
|
})
|
|
|
},
|
|
|
getBLEDeviceServices(){
|
|
|
var _this = this
|
|
|
uni.getBLEDeviceServices({
|
|
|
// 这里的 deviceId 需要已经通过 createBLEConnection 与对应设备建立链接
|
|
|
deviceId: _this.deviceId,
|
|
|
success:(res)=>{
|
|
|
console.log('device services:', res)
|
|
|
_this.serverList = res.services
|
|
|
// _this.serviceId = res.services[0].uuid;
|
|
|
console.log('serverId:', _this.serviceId)
|
|
|
}
|
|
|
})
|
|
|
},
|
|
|
getBLEDeviceCharacteristics () {
|
|
|
var _this = this
|
|
|
uni.getBLEDeviceCharacteristics({
|
|
|
// 这里的 deviceId 需要已经通过 createBLEConnection 与对应设备建立链接
|
|
|
deviceId: _this.deviceId,
|
|
|
// 这里的 serviceId 需要在 getBLEDeviceServices 接口中获取
|
|
|
serviceId:_this.serviceId,
|
|
|
success:(res)=>{
|
|
|
console.log('getBLEDeviceCharacteristics', res)
|
|
|
_this.characteristics = res.characteristics
|
|
|
// _this.characteristicId = res.characteristics[0].uuid
|
|
|
},
|
|
|
fail:(res)=>{
|
|
|
console.log(res)
|
|
|
}
|
|
|
})
|
|
|
},
|
|
|
// 发送二进制数据
|
|
|
writeBLECharacteristicValue(){
|
|
|
if (!this.deviceId) {
|
|
|
uni.showToast({
|
|
|
icon: 'none',
|
|
|
title: '请选择设备'
|
|
|
})
|
|
|
return
|
|
|
}
|
|
|
if (!this.serviceId) {
|
|
|
uni.showToast({
|
|
|
icon: 'none',
|
|
|
title: '请选择设备服务'
|
|
|
})
|
|
|
return
|
|
|
}
|
|
|
if (!this.characteristicId) {
|
|
|
uni.showToast({
|
|
|
icon: 'none',
|
|
|
title: '请选择特征值'
|
|
|
})
|
|
|
return
|
|
|
}
|
|
|
let printerJobs = new PrinterJobs()
|
|
|
var arr = [{
|
|
|
title: '阿根廷车厘子',
|
|
|
number: 20,
|
|
|
price: '￥188.00'
|
|
|
}, {
|
|
|
title: '新鲜山竹',
|
|
|
number: 38,
|
|
|
price: '￥199.00'
|
|
|
}]
|
|
|
var arr2 = [{
|
|
|
title: '平台消暑费',
|
|
|
price: '9.99'
|
|
|
},{
|
|
|
title: '打包费',
|
|
|
price: '2.00',
|
|
|
}]
|
|
|
printerJobs
|
|
|
.print(`下单时间：2021-07-25 15:30:23`)
|
|
|
.print(printerUtil.fillLine())
|
|
|
.print('备注')
|
|
|
.setSize(2, 2)
|
|
|
.setBold(true)
|
|
|
.print(`叫那位非常漂亮的小姐姐送来，其他人送来拒收`)
|
|
|
.setSize(1, 1)
|
|
|
.setBold(false)
|
|
|
.print(printerUtil.fillLine('*'))
|
|
|
.setAlign('lt')
|
|
|
.printArray(arr)
|
|
|
.print(printerUtil.fillAround('其它'))
|
|
|
.print(printerUtil.inline('平台随机立减', `-2.10`))
|
|
|
.print(printerUtil.inline('平台服务费', `-10.99`))
|
|
|
.printArray(arr2)
|
|
|
.print(printerUtil.fillLine())
|
|
|
.setAlign('rt')
|
|
|
.setSize(1, 2)
|
|
|
.setBold(true)
|
|
|
.print(`用户支付：￥99.99`)
|
|
|
.print(printerUtil.fillLine())
|
|
|
|
|
|
let buffer = printerJobs.buffer();
|
|
|
console.log('buffer>>>',buffer)
|
|
|
this.printbuffs(buffer)
|
|
|
},
|
|
|
printbuffs(buffer) {
|
|
|
// 1.并行调用多次会存在写失败的可能性
|
|
|
// 2.建议每次写入不超过20字节
|
|
|
// 分包处理，延时调用
|
|
|
const maxChunk = 20;
|
|
|
const delay = 20;
|
|
|
for (let i = 0, j = 0, length = buffer.byteLength; i < length; i += maxChunk, j++) {
|
|
|
let subPackage = buffer.slice(i, i + maxChunk <= length ? (i + maxChunk) : length);
|
|
|
setTimeout(this.printbuff, j * delay, subPackage);
|
|
|
}
|
|
|
},
|
|
|
printbuff(buffer) {
|
|
|
var _this = this
|
|
|
uni.writeBLECharacteristicValue({
|
|
|
// 这里的 deviceId 需要在 getBluetoothDevices 或 onBluetoothDeviceFound 接口中获取
|
|
|
deviceId: _this.deviceId,
|
|
|
// 这里的 serviceId 需要在 getBLEDeviceServices 接口中获取
|
|
|
serviceId: _this.serviceId,
|
|
|
// 这里的 characteristicId 需要在 getBLEDeviceCharacteristics 接口中获取
|
|
|
characteristicId: _this.characteristicId,
|
|
|
// 这里的value是ArrayBuffer类型
|
|
|
value: buffer,
|
|
|
success:(res)=> {
|
|
|
console.log('writeBLECharacteristicValue success', res.errMsg)
|
|
|
},
|
|
|
fail:(res)=> {
|
|
|
console.log('writeBLECharacteristicValue fail', res.errMsg)
|
|
|
},
|
|
|
complete (e) {
|
|
|
console.log('writeBLECharacteristicValue complete', e)
|
|
|
}
|
|
|
})
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
</script>
|
|
|
|
|
|
<style scoped>
|
|
|
* { font-size: 24rpx;}
|
|
|
button { font-size: 28rpx;}
|
|
|
.text-red { color: red; font-size: 28rpx;}
|
|
|
</style> |