初始提交

@@ -104,6 +104,7 @@ public class SerialPortService implements com.fazecast.jSerialComm.SerialPortDat
     public void disconnect() {
     public void disconnect() {
         if (isConnected) {
         if (isConnected) {
             try {
             try {
+
                 serialPort.removeDataListener();
                 serialPort.removeDataListener();
                 serialPort.closePort();
                 serialPort.closePort();
                 isConnected = false;
                 isConnected = false;