Javacard 如何移除和重新插入卡而不从 CardImpl.class 中的 checkState() 引发异常

Question

我在程序中找到此问题的解决方案时遇到问题： 我使用 JMRTD 库创建并个性化 JCOP 卡，但是，完成后，将 close 命令发送到服务，然后再次插入卡，任何尝试执行任何操作都只会返回我该卡已断开连接。我是否缺少重置标志的方法？

关于我的代码的说明： 顾名思义，Controlled Dialog 是一个编程控制的对话框，因此我可以在代码的特定部分打开和关闭它。

感谢您的任何帮助！

我的卡连接类：

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了什么。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功能的对象的"服务"字段，因此使用带有断开连接卡的服务而不是新创建的卡。 感谢您的理解！