我对最新版本的macos（bigsur 11.0.1）和库pc/sc有问题；在bigsur之前，程序使用的库工作得很好，但是在更新之后就不再工作了。我使用的是java版本1.8.0ď
在代码中，我使用 TerminalFactory.getDefaultType() 获取终端工厂的默认类型。更新前我收到“pc/sc”，但更新后我没有收到任何。
如果我想用这条线强制连接到一个示例 TerminalFactory factory = TerminalFactory.getInstance("PC/SC", null); 它将返回以下错误：

java.security.NoSuchAlgorithmException: Error constructing implementation (algorithm: PC/SC, provider: SunPCSC, class: sun.security.smartcardio.SunPCSC$Factory)
at java.security.Provider$Service.newInstance(Provider.java:1711)
at sun.security.jca.GetInstance.getInstance(GetInstance.java:243)
at sun.security.jca.GetInstance.getInstance(GetInstance.java:190)
at javax.smartcardio.TerminalFactory.getInstance(TerminalFactory.java:245)
at prueba.Prueba.isConnected(Prueba.java:165)
at prueba.Prueba.main(Prueba.java:63)
Caused by: java.lang.UnsupportedOperationException: PC/SC not available on this platform
at sun.security.smartcardio.PCSC.checkAvailable(PCSC.java:46)
at sun.security.smartcardio.SunPCSC$Factory.<init>(SunPCSC.java:59)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at java.security.Provider$Service.newInstance(Provider.java:1703)
... 5 more
Caused by: java.io.IOException: No PC/SC library found on this system
at sun.security.smartcardio.PlatformPCSC.getLibraryName(PlatformPCSC.java:122)
at sun.security.smartcardio.PlatformPCSC.access$000(PlatformPCSC.java:43)
at sun.security.smartcardio.PlatformPCSC$1.run(PlatformPCSC.java:64)
at sun.security.smartcardio.PlatformPCSC$1.run(PlatformPCSC.java:60)
at java.security.AccessController.doPrivileged(Native Method)
at sun.security.smartcardio.PlatformPCSC.<clinit>(PlatformPCSC.java:60)
at sun.security.smartcardio.SunPCSC$Factory.<init>(SunPCSC.java:59)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at java.security.Provider$Service.newInstance(Provider.java:1703)
at sun.security.jca.GetInstance.getInstance(GetInstance.java:243)
at sun.security.jca.GetInstance.getInstance(GetInstance.java:190)
at javax.smartcardio.TerminalFactory.getInstance(TerminalFactory.java:245)
at javax.smartcardio.TerminalFactory.<clinit>(TerminalFactory.java:106)
at prueba.Prueba.isConnected(Prueba.java:164)
... 1 more
entro isConnected--2
Exception in thread "main" java.lang.NullPointerException
at prueba.Prueba.isConnected(Prueba.java:173)
at prueba.Prueba.main(Prueba.java:63)

我发现bigsur消除了pc/sc库，因此无法安装它。
我不知道´我不知道是有人犯了同样的错误还是有人已经解决了。
谢谢你的帮助。