SMTP-Client für Gmail auf Java mit Sockets Authentifizierung Problem

Question

Ich fand ein Socket SMTP-Client-Beispiel leicht für die Verbindung mit Google Mail mit SSLSockets geändert, aber jetzt weiß ich nicht, wie ich Konto autorisieren, dass ich sende. (Ich benutze JAVAMAIL nicht, da dies Hausaufgaben sind)

public class SMTP { 

    public static void main(String args[]) throws IOException, 
     UnknownHostException { 
    String msgFile = "file.txt"; 
    String from = "from@gmail.com"; 
    String to = "to@gmail.com"; 
    String mailHost = "smtp.gmail.com"; 
    SMTP mail = new SMTP(mailHost); 
    if (mail != null) { 
     if (mail.send(new FileReader(msgFile), from, to)) { 
     System.out.println("Mail sent."); 
     } else { 
     System.out.println("Connect to SMTP server failed!"); 
     } 
    } 
    System.out.println("Done."); 
    } 

    static class SMTP { 
    private final static int SMTP_PORT = 25; 

    InetAddress mailHost; 

    InetAddress localhost; 

    BufferedReader in; 

    PrintWriter out; 

    public SMTP(String host) throws UnknownHostException { 
     mailHost = InetAddress.getByName(host); 
     localhost = InetAddress.getLocalHost(); 
     System.out.println("mailhost = " + mailHost); 
     System.out.println("localhost= " + localhost); 
     System.out.println("SMTP constructor done\n"); 
    } 

    public boolean send(FileReader msgFileReader, String from, String to) 
     throws IOException { 
     SSLSocket smtpPipe; 
     InputStream inn; 
     OutputStream outt; 
     BufferedReader msg; 
     msg = new BufferedReader(msgFileReader); 
     smtpPipe = (SSLSocket) ((SSLSocketFactory) SSLSocketFactory.getDefault()).createSocket(InetAddress.getByName("smtp.gmail.com"), 465); 
     if (smtpPipe == null) { 
     return false; 
     } 
     inn = smtpPipe.getInputStream(); 
     outt = smtpPipe.getOutputStream(); 
     in = new BufferedReader(new InputStreamReader(inn)); 
     out = new PrintWriter(new OutputStreamWriter(outt), true); 
     if (inn == null || outt == null) { 
     System.out.println("Failed to open streams to socket."); 
     return false; 
     } 
     String initialID = in.readLine(); 
     System.out.println(initialID); 
     System.out.println("HELO " + localhost.getHostName()); 
     out.println("HELO " + localhost.getHostName()); 
     String welcome = in.readLine(); 
     System.out.println(welcome); 
     System.out.println("MAIL From:<" + from + ">"); 
     out.println("MAIL From:<" + from + ">"); 
     String senderOK = in.readLine(); 
     System.out.println(senderOK); 
     System.out.println("RCPT TO:<" + to + ">"); 
     out.println("RCPT TO:<" + to + ">"); 
     String recipientOK = in.readLine(); 
     System.out.println(recipientOK); 
     System.out.println("DATA"); 
     out.println("DATA"); 
     String line; 
     while ((line = msg.readLine()) != null) { 
     out.println(line); 
     } 
     System.out.println("."); 
     out.println("."); 
     String acceptedOK = in.readLine(); 
     System.out.println(acceptedOK); 
     System.out.println("QUIT"); 
     out.println("QUIT"); 
     return true; 
    } 
    } 
} 

Answer 1

Code wurde neu geschrieben. Das funktioniert gut.

public class TotalTemp 
{ 
    private static DataOutputStream dos; 

    public static void main(String[] args) throws Exception 
    { 
      int delay = 1000; 
      String user = "xxxxx@gmail.com"; 
      String pass = "xxxxxxxx11"; 
      String username = Base64.encodeBase64String(user.getBytes(StandardCharsets.UTF_8)); 
      String password = Base64.encodeBase64String(pass.getBytes(StandardCharsets.UTF_8));  

      SSLSocket sock = (SSLSocket)((SSLSocketFactory)SSLSocketFactory.getDefault()).createSocket("smtp.gmail.com", 465); 
//   Socket sock = new Socket("smtp.gmail.com", 587); 
      final BufferedReader br = new BufferedReader(new InputStreamReader(sock.getInputStream())); 
      (new Thread(new Runnable() 
      { 
       public void run() 
       { 
        try 
        { 
         String line; 
         while((line = br.readLine()) != null) 
           System.out.println("SERVER: "+line); 
        } 
        catch (IOException e) 
        { 
         e.printStackTrace(); 
        } 
       } 
      })).start(); 
      dos = new DataOutputStream(sock.getOutputStream()); 

      send("EHLO smtp.gmail.com\r\n"); 
      Thread.sleep(delay); 
      send("AUTH LOGIN\r\n"); 
      Thread.sleep(delay); 
      send(username + "\r\n"); 
      Thread.sleep(delay); 
      send(password + "\r\n"); 
      Thread.sleep(delay); 
      send("MAIL FROM:<XXXXXXXX@gmail.com>\r\n"); 
      //send("\r\n"); 
      Thread.sleep(delay); 
      send("RCPT TO:<YYYYYYYY@gmail.com>\r\n"); 
      Thread.sleep(delay); 
      send("DATA\r\n"); 
      Thread.sleep(delay); 
      send("Subject: Email test\r\n"); 
      Thread.sleep(delay); 
      send("Test 1 2 3\r\n"); 
      Thread.sleep(delay); 
      send(".\r\n"); 
      Thread.sleep(delay); 
      send("QUIT\r\n"); 
    } 

    private static void send(String s) throws Exception 
    { 
      dos.writeBytes(s); 
      System.out.println("CLIENT: "+s); 
    } 
}