java查看证书有效期

2021/12/6 17:18:06

本文主要是介绍java查看证书有效期,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!

public static void main(String[] args) throws  CertificateException, FileNotFoundException {
        CertificateFactory cf = CertificateFactory.getInstance("X.509");
        FileInputStream in = new  FileInputStream("G://test.cer");
        X509Certificate cert = (X509Certificate) cf.generateCertificate(in);
        Date effDate = cert.getNotBefore();
        Date expDate = cert.getNotAfter();
        System.out.println(effDate);
        System.out.println(expDate);
    }



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