如何使用Java连接到https url？

我尝试使用在web上找到的示例Java代码连接到https url：

 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.net.URL;
 import java.security.cert.Certificate;

 import javax.net.ssl.HttpsURLConnection;
 import javax.net.ssl.SSLPeerUnverifiedException;

 public class SSLClientTest {
public static void main(String[] args) {

    try {
        URL hp = new URL("https://godaddy.com");
        //URL hp = new URL("https://127.0.0.1:8443");
            //URL hp = new URL("https://www.google.com/");
        HttpsURLConnection hpCon = (HttpsURLConnection) hp.openConnection(); 

        System.out.println("after connection made:");
        int responseCode = hpCon.getResponseCode();
        System.out.println("responseCode:" + responseCode);

        boolean isProxy = hpCon.usingProxy();
        System.out.println("is using proxy:" + isProxy);
        InputStream obj = hpCon.getInputStream();
        BufferedReader br = new BufferedReader(new InputStreamReader(obj));

        String s;
        while ((s = br.readLine()) != null) {
            System.out.println("content >>" + s);
        }

    } catch (Exception ex) {
        ex.printStackTrace();
    }
}

但是得到各种各样的错误信息，我不能解决，或者用这些错误信息上的许多互联网帖子来解决。如何使用Java连接到https url ssl

javax.net.ssl.SSLHandshakeException: java.security.cert.CertificateException: No subject alternative names present
at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1902)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:276)
...
Caused by: java.security.cert.CertificateException: No subject alternative names present
at sun.security.util.HostnameChecker.matchIP(HostnameChecker.java:142)
at sun.security.util.HostnameChecker.match(HostnameChecker.java:91)
at sun.security.ssl.X509TrustManagerImpl.checkIdentity(X509TrustManagerImpl.java:347)
at 
... 13 more

及

---

此链接可能对您有所帮助。不确定如何使用此信息不清楚哪个堆栈跟踪属于哪个尝试（因为您已经注释掉了一些URL）。当您使用IP地址时，肯定会产生“不存在主题替代名称”，请参阅。

javax.net.ssl.SSLHandshakeException: Remote host closed connection during handshake
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:946)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1328)
...
Caused by: java.io.EOFException: SSL peer shut down incorrectly
at sun.security.ssl.InputRecord.read(InputRecord.java:352)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:927)
... 10 more
...
Caused by: javax.net.ssl.SSLHandshakeException: Remote host closed connection during handshake
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:946)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1328)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1355)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1339)
at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:515)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1299)
at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:468)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:338)
at SSLClientTest.print_https_cert(SSLClientTest.java:56)
at SSLClientTest.main(SSLClientTest.java:21)
Caused by: java.io.EOFException: SSL peer shut down incorrectly
at sun.security.ssl.InputRecord.read(InputRecord.java:352)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:927)
... 10 more