Java create x509certificate from XML X509Data

Question

i从xml文件提取x509certificate数据

        <X509Data>
            <X509Certificate>
      MIIB7DCCAVmgAwIBAgIQPjHcBTL63bBLuJZ88RcrCjAJBgUrDgMCHQUAMBExDzANBgNVBAMT
      BnJvbWVvazAgFw0xMDAzMTUwMjI1MjZaGA8yMTEwMDIxOTAyMjUyNlowETEPMA0GA1UEAxMG
      cm9tZW9rMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDAu/sBh13A27rR7gJpZsI6zCee
      TXNohQWlq2z6Zg8Oxzsy5JoVV....==
            </X509Certificate>
        </X509Data>

如何从此数据中创建Java x509certificate？

我已经尝试了

    CertificateFactory cf = CertificateFactory.getInstance(X_509);
    ByteArrayInputStream bais = new ByteArrayInputStream(certBytes);
    X509Certificate x509cert = (X509Certificate) cf.generateCertificate(bais);
    bais.close();

但是发生错误

java.security.cert.CertificateParsingException: invalid DER-encoded certificate data.

任何帮助都将不胜感激。

Answer 1

这些字节是pem。Java可以处理它，但是如果将其封闭在" -----开始证书------"one_answers" -----结束证书-----"