[JAVA] java.security.cert.CertificateException: No name matching some_name found

Problem

public class UrlConnectionTest {
	public static void main(String[] args) throws Exception {

		URL url = new URL("http://example.com");
		URLConnection conn = url.openConnection();

		InputStream in = conn.getInputStream(); // occur error
		
    }
}

 

Caused by: javax.net.ssl.SSLHandshakeException: 
    java.security.cert.CertificateException: No name matching some_name found
	at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Alerts.java:174)
	at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1611)
	at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:187)
	at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:181)
	......
Caused by: java.security.cert.CertificateException: No name matching some_name found
	at sun.security.util.HostnameChecker.matchDNS(HostnameChecker.java:210)
	at sun.security.util.HostnameChecker.match(HostnameChecker.java:77)
	......

 

 

---

Solution

 

public class UrlConnectionTest{
	
	public static void main(String[] args) throws Exception {

		javax.net.ssl.HttpsURLConnection.setDefaultHostnameVerifier(
		new javax.net.ssl.HostnameVerifier(){

		    public boolean verify(String hostname,
		            javax.net.ssl.SSLSession sslSession) {
		        // if (hostname.equals("some_name")) { // specific url(hostname) verify
		        //    return true;
		        // }
		        // return false;
                return true; // all url(hostname) verify
		    }
		});
	   
		URL url = new URL("http://example.com");
        URLConnection conn = url.openConnection();
        
        InputStream in = conn.getInputStream(); // occur error
       
    }
}