无线射频识别 - 不完整的输出

Question

我一直在测试和处理我的RFID扫描仪代码，我发现了一些奇怪的东西。当我点击卡片时，在某些情况下结果会被截断。

例子：

点击 1：[2]1,000,007，000242985

点击 2：7[3][2]1,000,007,0002429

点击 3：857[3][2]1,000，007,00024

点击 n：等。

预期输出： [2]R,AAA,TTT,NNNNNNNNNN[3]

R = if the ID is registered or not: flags 1 and 0
A = The address where the ID is located inside the scanner's memory
T = the type of card
N = the ID number

如果我理解正确，传输以 ASCII 字符 2 和 3 开始和结束。所以看起来我得到的是一个不完整的结果。我该如何解决这个问题？

这是我的完整代码：

import jssc.SerialPort; 
import jssc.SerialPortEvent; 
import jssc.SerialPortEventListener; 
import jssc.SerialPortException;
public class ComControl{
    static SerialPort serialPort;
    String[] collector;
    public static void main(String[] args) {
        serialPort = new SerialPort("COM6"); 
        try {
            serialPort.openPort();//Open serial port
            serialPort.setParams(SerialPort.BAUDRATE_9600,SerialPort.DATABITS_8,SerialPort.STOPBITS_1,SerialPort.PARITY_NONE);//Set params. Also you can set params by this string: serialPort.setParams(9600, 8, 1, 0);
            serialPort.writeBytes("02v003".getBytes());//Write data to port
            serialPort.closePort();//Close serial port
        }
        catch (SerialPortException ex) {
            System.out.println(ex);
        }
        try {
            serialPort.openPort();//Open port
            serialPort.setParams(9600, 8, 1, 0);//Set params
            int mask = SerialPort.MASK_RXCHAR + SerialPort.MASK_CTS + SerialPort.MASK_DSR;//Prepare mask
            serialPort.setEventsMask(mask);//Set mask
            serialPort.addEventListener(new SerialPortReader());//Add SerialPortEventListener
        }
        catch (SerialPortException ex) {
            System.out.println(ex);
        }
    }
    static class SerialPortReader implements SerialPortEventListener {
        @Override
        public void serialEvent(SerialPortEvent event) {
            try{
            }catch(Exception e){
                System.out.println(e);
            }
            if(event.isRXCHAR()){//If data is available
                if(event.getEventValue() == 10){//Check bytes count in the input buffer
                    //Read data, if 10 bytes available
                    String sizer="";
                    try{
                        sizer="";
                        sizer += serialPort.readString();
                    }catch (SerialPortException ex) {
                        System.out.println(ex);
                    }
                    System.out.println(sizer);
                    sizer = "";
                }
            }
//            else if(event.isCTS()){//If CTS line has changed state
//                if(event.getEventValue() == 1){//If line is ON
//                    System.out.println("CTS - ON");
//                }
//                else {
//                    System.out.println("CTS - OFF");
//                }
//            }
//            else if(event.isDSR()){///If DSR line has changed state
//                if(event.getEventValue() == 1){//If line is ON
//                    System.out.println("DSR - ON");
//                }
//                else {
//                    System.out.println("DSR - OFF");
//                }
//            }
        }
    }
}

以下是有关我正在使用的设备的信息：低成本RFID阅读器 - 电子小玩意

Answer 1

没

关系，我得到了答案。我愚蠢到把 10 个字节放在它实际上是 22 个字节的时候。