2 changed files with 203 additions and 20 deletions
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import PrinterJobs from '@/components/print/printerjobs.js' |
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import printerUtil from '@/components/print/printerutil.js' |
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import util from '@/components/print/util.js' |
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import drawQrcode from '@/components/print/weapp.qrcode.esm.js' |
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import Bluetooth from '@/components/print/bluetooth.js' |
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let bluetooth = new Bluetooth(); |
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let isPrint= false |
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export default { |
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getData() { |
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var that = this; |
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if(uni.getStorageSync('bluetoothDeviceId')){ |
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let id = uni.getStorageSync('bluetoothDeviceId') |
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this.bindViewTap(id,false) |
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}else{ |
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uni.showModal({ |
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title: '提示', |
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content: '您还没有连接打印机，将无法为您打印小票！' |
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}); |
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} |
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}, |
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async bindViewTap(deviceId, state) { |
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var _this = this; |
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console.log(deviceId) |
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try { |
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//1.链接设备
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await bluetooth.createBLEConnection(deviceId).then((res) => { |
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bluetooth.deviceId = deviceId; |
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}).catch((e) => { |
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throw e; |
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}); |
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let server = []; |
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//2.寻找服务
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await bluetooth.getBLEDeviceServices().then((res) => { |
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console.log(res) |
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bluetooth.notifyId = ''; |
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bluetooth.writeId = ''; |
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bluetooth.num = 0; |
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bluetooth.serviceList = res |
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}).catch((e) => { |
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throw e; |
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}); |
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//3.获取蓝牙设备所有服务
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let result3 = await bluetooth.getBLEDeviceCharacteristics().then(res => { |
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uni.setStorageSync('bluetoothDeviceId', deviceId); |
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this.pickUpOnce() |
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}).catch((e) => { |
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throw e; |
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}); |
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} catch (e) { |
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//TODO handle the exception
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console.log("e: " + JSON.stringify(e)); |
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} |
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}, |
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//打印一次
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pickUpOnce() { |
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isPrint = true; |
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bluetooth.notifyBLECharacteristicValue(); |
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let self = this; |
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setTimeout(() => { |
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self.writeBLECharacteristicValue(); |
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}, 500); |
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}, |
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//写入控制命令
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async writeBLECharacteristicValue() { |
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let data = { |
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"settled_name": "#0112配送", |
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"detail": { |
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"total_amount": "137.00", |
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"other_amount": "0.00", |
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"discount_amount": "0.00", |
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"actual_amount": "137.00", |
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"order_sn": "20220512165337", |
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"goods_count": 3, |
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"order_time": "2022-05-12 16:53:00", |
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"supplier_id": 1 |
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}, |
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"code": "https://www.oulaisong.com/purchase?id=8", |
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"list": [{ |
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"id": 8, |
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"goods_name": "红烧带鱼", |
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"article_number": "1", |
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'sum_price':'16.00' |
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}, { |
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"id": 9, |
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"goods_name": "女童外套", |
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"article_number": "2", |
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"sum_price": "34.00" |
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}, { |
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"id": 10, |
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"goods_name": "25", |
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"article_number": "3", |
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"sum_price": "3.00" |
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}] |
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} |
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let printerJobs = new PrinterJobs(); |
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printerJobs.setAlign('ct').setSize(2, 2).setLineSpacing(80).print('#0112配送') |
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.setAlign('lt').setSize(1, 1).setLineSpacing(40).print('预计时间:2026-02-01 13:41:00') |
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.setAlign('lt').setSize(1, 1).setLineSpacing(40).print('七里香快餐明珠店') |
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.print(printerUtil.fillLine('-', 1, 50)) |
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.setAlign('lt').setSize(2, 2).setLineSpacing(80).print('王先生') |
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.setAlign('lt').setSize(1, 1).setLineSpacing(40).print('联系电话: *******0775') |
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.setAlign('lt').setSize(2, 2).setLineSpacing(80).print('地址:黑背生东川建设集团有限公司黑恶生运河区****') |
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.setAlign('lt').setSize(1, 1).setLineSpacing(40).print('为保护隐私，顾客电话及地址已被隐藏，您可登录商家端或骑手端查看') |
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.print(printerUtil.fillLine('-', 1, 50)); |
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for (var i = 0; i < data.list.length; i++) { |
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printerJobs.setAlign('lt').setSize(1, 1).setLineSpacing(40).print(data.list[i].goods_name) |
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let setLineSpacing = 40 |
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printerJobs.setLineSpacing(setLineSpacing).print(printerUtil.inlineArr([{ |
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'text': 'X' + data.list[i].article_number, |
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'width': 20, |
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}, { |
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'text': data.list[i].sum_price, |
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'width': 10, |
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}], 1, 50)); |
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} |
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printerJobs.print(printerUtil.fillLine('-', 1, 50)) |
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.setAlign('lt').setSize(1, 1).setLineSpacing(40).print('配送费：1圆') |
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.setAlign('lt').setSize(1, 1).setLineSpacing(40).print('合计金额：17圆') |
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.print(printerUtil.fillLine('-', 1, 50)) |
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.setAlign('lt').setSize(1, 1).setLineSpacing(40).print('商品取到后，如有任何商品问题，请及时联系商家和平台，客服将为您服务，客服电话15533910775，谢谢您的惠顾') |
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.println(); |
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let buffer = printerJobs.buffer(); |
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this.sendPrint(buffer); |
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}, |
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sendPrint(buffer) { |
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// 1.并行调用多次会存在写失败的可能性
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// 2.建议每次写入不超过20字节
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// 分包处理，延时调用
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let that = this |
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const maxChunk = 20; |
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const delay = 20; |
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isPrint = true; |
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for (let i = 0, j = 0, length = buffer.byteLength; i < length; i += maxChunk, j++) { |
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let subPackage = buffer.slice(i, i + maxChunk <= length ? (i + maxChunk) : length); |
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setTimeout(this.sendPrintData, j * delay, subPackage); |
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} |
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isPrint = false; |
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}, |
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sendPrintData(buffer) { |
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bluetooth.writeBLECharacteristicValue(buffer).then(res => {}); |
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}, |
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startSearch(state) { |
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let that = this |
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bluetooth.openBluetoothAdapter().then(e => { |
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uni.startBluetoothDevicesDiscovery({ |
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success: res => { |
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uni.onBluetoothDeviceFound(result => { |
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let arr = that.list; |
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let devices = []; |
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let list = result.devices; |
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for (let i = 0; i < list.length; ++i) { |
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console.log(list[i]) |
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if (list[i].name && list[i].name != "未知设备") { |
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let arrNew = arr.filter((item) => { |
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return item.deviceId == list[i].deviceId; |
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}); |
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if (arrNew.length == 0) { |
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devices.push(list[i]); |
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} |
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if (uni.getStorageSync('bluetoothDeviceId') == list[i] |
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.deviceId) { |
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// that.bindViewTap(list[i].deviceId, state)
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} |
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} |
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} |
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that.list = arr.concat(devices); |
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}); |
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}, |
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fail: res => { |
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uni.hideLoading(); |
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uni.showToast({ |
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title: `搜索设备失败` + JSON.stringify(err) |
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}) |
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} |
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}) |
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}).catch(e => { |
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console.log(e) |
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}); |
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}, |
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// 停止搜索
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stopSearch() { |
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uni.hideLoading(); |
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bluetooth.stopBluetoothDevicesDiscovery(); |
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} |
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} |
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