蓝牙 多次打印报错

蓝牙 多次打印总是报错

Uncaught java.io.IOException: read failed, socket might closed or timeout, read ret: -1;at android.bluetooth.BluetoothSocket.connect at printer.html:1
也代码控制了 还是报错

window.ConnectPrinter = function(bleId) {  

        if (device == null) {  
            var plusMain = plus.android.runtimeMainActivity(),  
                BluetoothAdapter = plus.android.importClass("android.bluetooth.BluetoothAdapter"),  
                UUID = plus.android.importClass("java.util.UUID"),  
                uuid = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"),  
                BAdapter = BluetoothAdapter.getDefaultAdapter(),  
                device = BAdapter.getRemoteDevice(bleId);  

            plus.android.importClass(device);  

            var bluetoothSocket = device.createInsecureRfcommSocketToServiceRecord(uuid);  
            plus.android.importClass(bluetoothSocket);  

            BAdapter.cancelDiscovery();  
        }  
        //      alert("取消搜索");  
        if (!bluetoothSocket.isConnected()) {  
            //          alert("链接")  
            bluetoothSocket.connect();  
            mui.toast('打印机已就绪，可正常打印！');  
        }  

        this.gotoPrint = function(byteStr, options) {  
            var outputStream = bluetoothSocket.getOutputStream();  
            plus.android.importClass(outputStream);  
            if (byteStr) {  
                var bytes = plus.android.invoke(byteStr, 'getBytes', 'gbk');  
                if (options) {  
                    mui.each(options, function(index, item) {  
                        outputStream.write(item)  
                    });  
                }  
                outputStream.write(bytes);  
                outputStream.flush();  
            } else {  
                if (options) {  
                    mui.each(options, function(index, item) {  
                        outputStream.write(item)  
                        outputStream.flush();  
                    });  
                }