'pop3' 태그의 글 목록

'pop3'에 해당되는 글 2건

javamail pop3 ssl 적용.

ITWeb/개발일반 2012. 5. 2. 20:47

그냥 일반 웹메일에서 외부메일 가져오기로 기능 확인 하려다 삽질만 했내요.
기냥 코딩 할걸..ㅡ.ㅡ;;
- 네이버 메일에서 외부메일 가져오기는 SSL 지원이 없구요.
- G메일에서는 SSL Port 변경이 없내요..

javamail api 를 이용해서 구현 가능합니다.
아래는 샘플 코드 이구요.
퍼왔습니다.

[원본링크]

http://www.java-tips.org/other-api-tips/javamail/connecting-gmail-using-pop3-connection-with-ssl-2.html

[샘플코드]

You can use following utility class to conect to Gmail. Since Gmail only supports POP3 connection with SSL, the connection is established via SSL.

package org.javatipsjavaemaillistimporter;

import com.sun.mail.pop3.POP3SSLStore;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import java.util.Properties;
import javax.mail.Address;
import javax.mail.FetchProfile;
import javax.mail.Flags;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Part;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.URLName;
import javax.mail.internet.ContentType;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.ParseException;

public class GmailUtilities {
    
    private Session session = null;
    private Store store = null;
    private String username, password;
    private Folder folder;
    
    public GmailUtilities() {
        
    }
    
    public void setUserPass(String username, String password) {
        this.username = username;
        this.password = password;
    }
    
    public void connect() throws Exception {
        
        String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
        
        Properties pop3Props = new Properties();
        
        pop3Props.setProperty("mail.pop3.socketFactory.class", SSL_FACTORY);
        pop3Props.setProperty("mail.pop3.socketFactory.fallback", "false");
        pop3Props.setProperty("mail.pop3.port",  "995");
        pop3Props.setProperty("mail.pop3.socketFactory.port", "995");
        
        URLName url = new URLName("pop3", "pop.gmail.com", 995, "",
                username, password);
        
        session = Session.getInstance(pop3Props, null);
        store = new POP3SSLStore(session, url);
        store.connect();
        
    }
    
    public void openFolder(String folderName) throws Exception {
        
        // Open the Folder
        folder = store.getDefaultFolder();
        
        folder = folder.getFolder(folderName);
        
        if (folder == null) {
            throw new Exception("Invalid folder");
        }
        
        // try to open read/write and if that fails try read-only
        try {
            
            folder.open(Folder.READ_WRITE);
            
        } catch (MessagingException ex) {
            
            folder.open(Folder.READ_ONLY);
            
        }
    }
    
    public void closeFolder() throws Exception {
        folder.close(false);
    }
    
    public int getMessageCount() throws Exception {
        return folder.getMessageCount();
    }
    
    public int getNewMessageCount() throws Exception {
        return folder.getNewMessageCount();
    }
    
    public void disconnect() throws Exception {
        store.close();
    }
    
    public void printMessage(int messageNo) throws Exception {
        System.out.println("Getting message number: " + messageNo);
        
        Message m = null;
        
        try {
            m = folder.getMessage(messageNo);
            dumpPart(m);
        } catch (IndexOutOfBoundsException iex) {
            System.out.println("Message number out of range");
        }
    }
    
    public void printAllMessageEnvelopes() throws Exception {
        
        // Attributes & Flags for all messages ..
        Message[] msgs = folder.getMessages();
        
        // Use a suitable FetchProfile
        FetchProfile fp = new FetchProfile();
        fp.add(FetchProfile.Item.ENVELOPE);        
        folder.fetch(msgs, fp);
        
        for (int i = 0; i < msgs.length; i++) {
            System.out.println("--------------------------");
            System.out.println("MESSAGE #" + (i + 1) + ":");
            dumpEnvelope(msgs[i]);
            
        }
        
    }
    
    public void printAllMessages() throws Exception {
     
        // Attributes & Flags for all messages ..
        Message[] msgs = folder.getMessages();
        
        // Use a suitable FetchProfile
        FetchProfile fp = new FetchProfile();
        fp.add(FetchProfile.Item.ENVELOPE);        
        folder.fetch(msgs, fp);
        
        for (int i = 0; i < msgs.length; i++) {
            System.out.println("--------------------------");
            System.out.println("MESSAGE #" + (i + 1) + ":");
            dumpPart(msgs[i]);
        }
        
    
    }
    
    
    public static void dumpPart(Part p) throws Exception {
        if (p instanceof Message)
            dumpEnvelope((Message)p);
       
        String ct = p.getContentType();
        try {
            pr("CONTENT-TYPE: " + (new ContentType(ct)).toString());
        } catch (ParseException pex) {
            pr("BAD CONTENT-TYPE: " + ct);
        }
        
        /*
         * Using isMimeType to determine the content type avoids
         * fetching the actual content data until we need it.
         */
        if (p.isMimeType("text/plain")) {
            pr("This is plain text");
            pr("---------------------------");
            System.out.println((String)p.getContent());        
        } else {
            
            // just a separator
            pr("---------------------------");
            
        }
    }
    
    public static void dumpEnvelope(Message m) throws Exception {        
        pr(" ");
        Address[] a;
        // FROM
        if ((a = m.getFrom()) != null) {
            for (int j = 0; j < a.length; j++)
                pr("FROM: " + a[j].toString());
        }
        
        // TO
        if ((a = m.getRecipients(Message.RecipientType.TO)) != null) {
            for (int j = 0; j < a.length; j++) {
                pr("TO: " + a[j].toString());                
            }
        }
        
        // SUBJECT
        pr("SUBJECT: " + m.getSubject());
        
        // DATE
        Date d = m.getSentDate();
        pr("SendDate: " +
                (d != null ? d.toString() : "UNKNOWN"));
        

    }
    
    static String indentStr = "                                               ";
    static int level = 0;
    
    /**
     * Print a, possibly indented, string.
     */
    public static void pr(String s) {
        
        System.out.print(indentStr.substring(0, level * 2));
        System.out.println(s);
    }
    
}

And the following code snippet shows how to use the above utility class. You can uncomment printAllMessageEnvelopes() method to just print the envelopes of the messages instead of whole messages.

package org.javatipsjavaemaillistimporter;

public class Main {
    
    /** Creates a new instance of Main */
    public Main() {
    }
    
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        
        try {
            
            GmailUtilities gmail = new GmailUtilities();
            gmail.setUserPass(" myemail@gmail.com", "mypassword");
            gmail.connect();
            gmail.openFolder("INBOX");
            
            int totalMessages = gmail.getMessageCount();
            int newMessages = gmail.getNewMessageCount();
            
            System.out.println("Total messages = " + totalMessages);
            System.out.println("New messages = " + newMessages);
            System.out.println("-------------------------------");
            
            //gmail.printAllMessageEnvelopes();
            gmail.printAllMessages();
            
        } catch(Exception e) {
            e.printStackTrace();
            System.exit(-1);
        }
        
    }
    
}

MTA : SMTP 지원 서버 sendmail , qmail 등 ...
MUA : outlook 등
MDA : MTA 가 메일을 수신받아 메일함에 저장하는 agent ex) vpopmail , qmail-local....
MRA : 리모트 서버에 있는 우편함으로부터 사용자의 MUA로 메시지를 가져오는 프로그램 ex) dovecot , courier-imap , qmail-pop3d ....

1. qmail에서 pop3 는 기본 패키지

http://www.nrg4u.com/qmail/the-big-qmail-picture-103-a4.pdf

여기서 보통 qmail 사용시 vpopmail 을 함께 연동해서 가상도메인(/etc/passwd에 계정 생성하지 않아도됨)을 사용해서
계정/도메인을 관리할수 있음
vpopmail 용도는? http://qmail.kldp.net/phpbb/viewtopic.php?f=2&t=4502&start=0

vpopmail을 사용하게 되면 qmail 기본 패키지 checkpassword 대신 vchkpw 사용하게됨

결론적으로 pop3는 기본 qmail 패키지 이용하는게 일반적임

2. imap 경우 기본 qmail 에서 제공하지 않고 여러 오픈소스가 있음 구글링해보면 주로 qmail + dovecot 와 qmail+ courier-imap 을 많이 검색됨

(꼭 imap 뿐아니라 설정에 따라 pop3 도 지원함)

dovecot를 설치 : http://community.365managed.com/?document_srl=191, http://www.dovecot.org/download.html

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jjeong

'pop3'에 해당되는 글 2건

javamail pop3 ssl 적용.

Qmail, pop3, imap 관련.

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