我有一个
cert.PEM
我以这种方式创建的文件:
Base64 encoder = new Base64();
File file = new File(certPath + "cert.pem");
file.createNewFile();
writer = new FileWriter(file);
writer.write(new String(encoder.encode(cert.getEncoded())));
writer.close();
它没有
----BEGIN CERTIFICATE----
和
-----END CERTIFICATE-----
部分。它的原始形式如下:
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
现在我想再次读取它并将其解析为
X509CertificateHolder
按此代码:
PEMParser r = new PEMParser(new FileReader(certFile));
System.out.println(r.ready());
PemObject object = r.readPemObject();
X509CertificateHolder cert = new X509CertificateHolder(object.getContent());
Date date = new Date();
if (date.compareTo(cert.getNotAfter()) > 0)
{
generateCert();
}
我明白了:
java.lang.NullPointerException
at com.sunova.bot.Launcher.<init>(Launcher.java:67)
at com.sunova.bot.Launcher.getInstance(Launcher.java:41)
at com.sunova.bot.Launcher.main(Launcher.java:48)
这是由于
r.readPemObject()
返回null。我该怎么办?