如何用Java获取证书信息 [英] How to get the Certificate Information in Java
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问题描述
我试图只用Java获取和读取证书。我应该查看哪些代码或示例来获取网站的证书。
I am trying to get and read a certificate only in Java. What code or examples should I look at to get the certificates of a website.
例如网站:
- https://google.com
- < a href =https://www.ssllabs.com/ =nofollow> https://www.ssllabs.com/
- https://google.com
- https://www.ssllabs.com/
我是否使用URL类?
URL url = new URL("https://google.com");
推荐答案
好的,我刚刚知道如何获取信息我想要的。
Ok I just found out how I can get the information that I want.
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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