java - 无法检测到蓝牙服务(java.lang.NumberFormatException : For input string: "0S" )

Question

您好，我想从我的计算机检测外部蓝牙设备的串行端口蓝牙服务，为此我使用 Bluecove API 和以下代码:

 BluetoothDeviceDiscovery bluetoothDeviceDiscovery=new BluetoothDeviceDiscovery();

        //display local device address and name
        LocalDevice localDevice = LocalDevice.getLocalDevice();
        System.out.println("Address: "+localDevice.getBluetoothAddress());
        System.out.println("Name: "+localDevice.getFriendlyName());

        //find devices
        DiscoveryAgent agent = localDevice.getDiscoveryAgent();
        UUID uuid = new UUID("SPP", true);
         String ServiceURL = agent.selectService(uuid,ServiceRecord.NOAUTHENTICATE_NOENCRYPT, false);//"btspp://localhost:"+rd.getBluetoothAddress()+";name=SPP"; 
        if( ServiceURL == null) {
            System.out.println("Connection failed: "+ uuid +"\n");
            return;
         }

但我在行中始终出现“java.lang.NumberFormatException:对于输入字符串:“0S””异常:

 UUID uuid = new UUID("SPP", true);

感谢您的帮助

Answer 1

来自bluecove的documentation

“根据提供的字符串创建 UUID 对象。字符串中的字符必须来自十六进制集 [0-9、a-f、A-F]。”

“SPP”不是有效的十六进制数字。