Как исправить ошибку ошибки неизвестного хоста

Question

Когда я пытаюсь скомпилировать следующий код Java, я получаю вышеуказанную ошибку.

Вот код Java.

import java.io.BufferedReader; 
import java.io.File; 
import java.io.FileInputStream; 
import java.io.FileOutputStream; 
import java.io.InputStream; 
import java.io.InputStreamReader; 
import java.io.OutputStream; 
import java.security.KeyStore; 
import java.security.MessageDigest; 
import java.security.cert.CertificateException; 
import java.security.cert.X509Certificate; 

import javax.net.ssl.SSLContext; 
import javax.net.ssl.SSLException; 
import javax.net.ssl.SSLSocket; 
import javax.net.ssl.SSLSocketFactory; 
import javax.net.ssl.TrustManager; 
import javax.net.ssl.TrustManagerFactory; 
import javax.net.ssl.X509TrustManager; 

public class InstallCert { 

    public static void main(String[] args) throws Exception { 
    String host; 
    int port; 
    char[] passphrase; 
    if ((args.length == 1) || (args.length == 2)) { 
     String[] c = args[0].split(":"); 
     host = c[0]; 
     port = (c.length == 1) ? 443 : Integer.parseInt(c[1]); 
     String p = (args.length == 1) ? "changeit" : args[1]; 
     passphrase = p.toCharArray(); 
    } else { 
     System.out.println("Usage: java InstallCert <host>[:port] [passphrase]"); 
     return; 
    } 

    File file = new File("jssecacerts"); 
    if (file.isFile() == false) { 
     char SEP = File.separatorChar; 
     File dir = new File(System.getProperty("java.home") + SEP 
      + "lib" + SEP + "security"); 
     file = new File(dir, "jssecacerts"); 
     if (file.isFile() == false) { 
     file = new File(dir, "cacerts"); 
     } 
    } 
    System.out.println("Loading KeyStore " + file + "..."); 
    InputStream in = new FileInputStream(file); 
    KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType()); 
    ks.load(in, passphrase); 
    in.close(); 

    SSLContext context = SSLContext.getInstance("TLS"); 
    TrustManagerFactory tmf = 
     TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm()); 
    tmf.init(ks); 
    X509TrustManager defaultTrustManager = (X509TrustManager)tmf.getTrustManagers()[0]; 
    SavingTrustManager tm = new SavingTrustManager(defaultTrustManager); 
    context.init(null, new TrustManager[] {tm}, null); 
    SSLSocketFactory factory = context.getSocketFactory(); 

    System.out.println("Opening connection to " + host + ":" + port + "..."); 
    SSLSocket socket = (SSLSocket)factory.createSocket(host, port); 
    socket.setSoTimeout(10000); 
    try { 
     System.out.println("Starting SSL handshake..."); 
     socket.startHandshake(); 
     socket.close(); 
     System.out.println(); 
     System.out.println("No errors, certificate is already trusted"); 
    } catch (SSLException e) { 
     System.out.println(); 
     e.printStackTrace(System.out); 
    } 

    X509Certificate[] chain = tm.chain; 
    if (chain == null) { 
     System.out.println("Could not obtain server certificate chain"); 
     return; 
    } 

    BufferedReader reader = 
     new BufferedReader(new InputStreamReader(System.in)); 

    System.out.println(); 
    System.out.println("Server sent " + chain.length + " certificate(s):"); 
    System.out.println(); 
    MessageDigest sha1 = MessageDigest.getInstance("SHA1"); 
    MessageDigest md5 = MessageDigest.getInstance("MD5"); 
    for (int i = 0; i < chain.length; i++) { 
     X509Certificate cert = chain[i]; 
     System.out.println 
      (" " + (i + 1) + " Subject " + cert.getSubjectDN()); 
     System.out.println(" Issuer " + cert.getIssuerDN()); 
     sha1.update(cert.getEncoded()); 
     System.out.println(" sha1 " + toHexString(sha1.digest())); 
     md5.update(cert.getEncoded()); 
     System.out.println(" md5  " + toHexString(md5.digest())); 
     System.out.println(); 
    } 

    System.out.println("Enter certificate to add to trusted keystore or 'q' to quit: [1]"); 
    String line = reader.readLine().trim(); 
    int k; 
    try { 
     k = (line.length() == 0) ? 0 : Integer.parseInt(line) - 1; 
    } catch (NumberFormatException e) { 
     System.out.println("KeyStore not changed"); 
     return; 
    } 

    X509Certificate cert = chain[k]; 
    String alias = host + "-" + (k + 1); 
    ks.setCertificateEntry(alias, cert); 

    OutputStream out = new FileOutputStream("jssecacerts"); 
    ks.store(out, passphrase); 
    out.close(); 

    System.out.println(); 
    System.out.println(cert); 
    System.out.println(); 
    System.out.println 
     ("Added certificate to keystore 'jssecacerts' using alias '" 
     + alias + "'"); 
    } 

    private static final char[] HEXDIGITS = "abcdef".toCharArray(); 

    private static String toHexString(byte[] bytes) { 
    StringBuilder sb = new StringBuilder(bytes.length * 3); 
    for (int b : bytes) { 
     b &= 0xff; 
     sb.append(HEXDIGITS[b >> 4]); 
     sb.append(HEXDIGITS[b & 15]); 
     sb.append(' '); 
    } 
    return sb.toString(); 
    } 

    private static class SavingTrustManager implements X509TrustManager { 

    private final X509TrustManager tm; 
    private X509Certificate[] chain; 

    SavingTrustManager(X509TrustManager tm) { 
     this.tm = tm; 
    } 

      @Override 
     public X509Certificate[] getAcceptedIssuers() { 
      return new X509Certificate[0]; 
      // throw new UnsupportedOperationException(); 
     } 

     @Override 
     public void checkClientTrusted(final X509Certificate[] chain, 
       final String authType) 
       throws CertificateException { 
      throw new UnsupportedOperationException(); 
     } 

     @Override 
     public void checkServerTrusted(final X509Certificate[] chain, 
       final String authType) 
       throws CertificateException { 
      this.chain = chain; 
      this.tm.checkServerTrusted(chain, authType); 
     } 
    } 

} 

Вот выход терминала.

Loading KeyStore C:\Program Files\Java\jre7\lib\security\cacerts... 
Opening connection to xxx.xxxxx.local:443... 
Exception in thread "main" java.net.UnknownHostException: xxx.xxxxx.local 
     at java.net.AbstractPlainSocketImpl.connect(Unknown Source) 
     at java.net.PlainSocketImpl.connect(Unknown Source) 
     at java.net.SocksSocketImpl.connect(Unknown Source) 
     at java.net.Socket.connect(Unknown Source) 
     at sun.security.ssl.SSLSocketImpl.connect(Unknown Source) 
     at sun.security.ssl.SSLSocketImpl.<init>(Unknown Source) 
     at sun.security.ssl.SSLSocketFactoryImpl.createSocket(Unknown Source) 
     at InstallCert.main(InstallCert.java:128) 

c:\src-ssl> 

Может кто-нибудь помочь мне исправить ошибку?

Answer 1

Указанный мной номер xxx.xxxxx.local:443 не работает. Он был изменен.