[英]How to get the Certificate Information in Java
I am trying to get and read a certificate only in Java. 我试图仅在Java中获取和读取证书。 What code or examples should I look at to get the certificates of a website. 我应该查看哪些代码或示例来获得网站的证书。
For examples the websites: 例如,网站:
Do I use the URL class? 我是否使用URL类?
URL url = new URL("https://google.com");
Ok I just found out how I can get the information that I want. 好的,我刚刚发现如何获得所需的信息。
public void certInformation(String aURL) throws Exception{
URL destinationURL = new URL(aURL);
HttpsURLConnection conn = (HttpsURLConnection) destinationURL.openConnection();
conn.connect();
Certificate[] certs = conn.getServerCertificates();
for (Certificate cert : certs) {
System.out.println("Certificate is: " + cert);
if(cert instanceof X509Certificate) {
X509Certificate x = (X509Certificate ) cert;
System.out.println(x.getIssuerDN());
}
}
}
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