Javacard 如何在 CardImpl.class 中的 checkState() 中移除并重新插入卡而不引发异常

Question

我在程序中找不到此问题的解决方案:我使用 JMRTD 库创建并个性化 JCOP 卡，但是在完成后，向服务发送关闭命令，然后再次插入卡，任何尝试执行任何操作都会返回卡已断开连接的信息。我是否缺少重置标志的方法？

关于我的代码的注释:ControlledDialog 顾名思义是一个以编程方式控制的对话框，因此我可以在代码的特定部分打开和关闭它。

感谢您的帮助!

我的 CardConnection 类:

package util;

import UI.MainPanel;
import UI.VerifyPanel;
import java.security.Security;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.smartcardio.CardException;
import javax.smartcardio.CardNotPresentException;
import javax.smartcardio.CardTerminal;
import javax.smartcardio.TerminalFactory;
import net.sf.scuba.smartcards.CardServiceException;
import net.sf.scuba.smartcards.TerminalCardService;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.jmrtd.PassportService;

public class CardConnection {

    static CardTerminal reader;
    static PassportService service;

    public static PassportService connectPassportService() throws CardException, CardServiceException {

        //Encontra-se a factory
        TerminalFactory terminal = TerminalFactory.getDefault();

        //listam-se os terminais
        List<CardTerminal> readers = terminal.terminals().list();

        if (readers.isEmpty()) {
            System.out.println("No Readers Found");
            System.exit(-1);
        }

        //escolhe-se o primeiro
        reader = readers.get(0);

        if (GlobalFlags.DEBUG) {
            System.err.println("Reader: " + reader);

            System.err.println("Por favor insira um cartão");
        }

        for (int i = 0; i < 10 && !reader.isCardPresent(); i++) {
            ControlledDialog.showMessageDialog("Por favor insira um cartão " + i, "Início");
            reader.waitForCardPresent(1000);
            System.err.println("Cartão " + (reader.isCardPresent() ? "" : "não ") + "conectado " + i);
        }
        try {
            if (reader.isCardPresent()) {

                service = new PassportService(new TerminalCardService(reader));
                service.open();
                service.sendSelectApplet(false);
                BouncyCastleProvider provider = new BouncyCastleProvider();
                Security.addProvider(provider);

            } else {
                throw new CardNotPresentException("Cartão não encontrado");
            }
        } finally {
            ControlledDialog.closeMessageDialog();
        }
        return service;
    }

    public static void closeConnection() {

        if (service == null) {
            return;
        }
        service.close();

        try {

            if (reader.isCardPresent()) {
                if (GlobalFlags.DEBUG) {
                    System.err.println("Por favor retire o cartão");
                }
                ControlledDialog.showMessageDialog("Por favor retire o cartão", "Fim");
            }

            while (reader.isCardPresent()) {
                System.out.println("Remova o cartão atual");
                reader.waitForCardAbsent(100000);
            }

            ControlledDialog.closeMessageDialog();

        } catch (CardException ex) {
            Logger.getLogger(VerifyPanel.class.getName()).log(Level.SEVERE, null, ex);
        }

        reader = null;
        service = null;

    }

}

Answer 1

我真的不知道如何删除问题，因为这里没有足够的信息来说明发生的情况。通过打印调用每个函数的对象的哈希码进行仔细调试后，我发现该问题的原因是我没有更新调用这些函数的对象的“服务”字段，因此，使用带有断开连接的卡的服务而不是新创建的服务。感谢您的理解!