蓝牙打印机 链接解决方案

目前使用网上的示例，代码如下。有偿求助解决 谢谢各位大佬 现在代码不报错，mac地址写死 打印机也没反应 求解决方案

function PrintQrCode(mac_address,byteStr) {    
            if (!mac_address) {    
                alert('请选择蓝牙打印机')   
                return  
            }    
            let main = window.plus.android.runtimeMainActivity()  
            let BluetoothAdapter = window.plus.android.importClass("android.bluetooth.BluetoothAdapter")   
            let UUID = window.plus.android.importClass("java.util.UUID")  
            let uuid = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB")  
            let BAdapter = BluetoothAdapter.getDefaultAdapter()  
            let device = BAdapter.getRemoteDevice(mac_address)    
            window.plus.android.importClass(device)   
            let bluetoothSocket = device.createInsecureRfcommSocketToServiceRecord(uuid)  
            window.plus.android.importClass(bluetoothSocket)  
            if (!bluetoothSocket.isConnected()) {    
                console.log('检测到设备未连接，尝试连接....')  
                bluetoothSocket.connect()  
            }    
            console.log('设备已连接')   
            if (bluetoothSocket.isConnected()) {    
              var outputStream = bluetoothSocket.getOutputStream();    
              window.plus.android.importClass(outputStream);  
              // var writer = new OutputStreamWriter(outputStream, 'GBK');     
              // window.plus.android.importClass(writer);   
              // var moduleSize = 8   
              var bytes = window.plus.android.invoke(byteStr, 'getBytes', 'gbk')  
              // var bar = window.plus.android.invoke(byteStr, 'getBytes', 'gbk')  
              // var length = bytes.length  
              // console.log(length)  
              console.log(bytes)  
              console.log(outputStream)  
              outputStream.write(bytes);    
              outputStream.flush();    
              // outputStream.write(29);    
              // outputStream.write(72);    
              // outputStream.write(2);    
              // outputStream.flush();    //hri字符打印位置    
              // outputStream.write(29);    
              // outputStream.write(119);    
              // outputStream.write(2);    
              // outputStream.flush();    //条码宽度    
              // outputStream.write(29);    
              // outputStream.write(104);    
              // outputStream.write(81);    
              // outputStream.flush();  //条码高度    
              // outputStream.write(29);    
              // outputStream.write(107);   //打印条码    
              // outputStream.write(73);   // 条码类型   code128    
              // outputStream.write(15);   //  条码位数    
              // outputStream.write(123);          
              // outputStream.write(66);    //code128 的子类型，有128a,128b,128c    
              // outputStream.write(bar);    
              // outputStream.flush();  
              // outputStream.flush();  
              console.log('打印完成')  
              // device = null  
              // bluetoothSocket.close();  
            }    
          }