我找到了解决方案，主要思想是将证书转换为x509，然后获取SubjectDN并解析值。
public class TestClass { public static void main(String[] args) throws Exception { KeyStore p12 = KeyStore.getInstance("pkcs12"); p12.load(new FileInputStream("pkcs.p12"), "password".toCharArray()); Enumeration<String> e = p12.aliases(); while (e.hasMoreElements()) { String alias = e.nextElement(); X509Certificate c = (X509Certificate) p12.getCertificate(alias); Principal subject = c.getSubjectDN(); String subjectArray[] = subject.toString().split(","); for (String s : subjectArray) { String[] str = s.trim().split("="); String key = str[0]; String value = str[1]; System.out.println(key + " - " + value); } } }}
