일반 JavaMail - Connecting Gmail pop3 server.

import java.util.Properties;

import javax.mail.Folder;

import javax.mail.MessagingException;

import javax.mail.Session;

import javax.mail.Store;

import javax.mail.URLName;

 

public class ReadTest {

 static String protocol = "pop3";

 static String host = "pop.gmail.com";

 static String user = "gmail ID";

 static String password = "password";

 static String port = "995";

 static String url = null;

 static String root = null;

 static String pattern = "%";

 static boolean recursive = false;

 static boolean verbose = false;

 static boolean debug = true;

 

 public static void main(String[] args) {

  // Get a Properties object

  Properties props = System.getProperties();

  

  // Let's check out what's in default Properties

  System.out.println(props.toString());

  

  //Before opening session, set port number and ssl authentication

  props.put("mail.pop3.port", "995");

  props.put("mail.pop3.ssl.enable", "true");

  

  //properties are added correctly?

  System.out.println(props.toString());

  

  // Get a Session object

  Session session = Session.getInstance(props, null);

  

  // let's see what's going on by setting debug as true

  session.setDebug(debug);

  // Get a Store object

  Store store = null;

  Folder rf = null;  

  

  

  try {

   if (url != null) {

    URLName urln = new URLName(url);

    store = session.getStore(urln);

    store.connect();

   } else {

    if (protocol != null) {

     store = session.getStore(protocol);

    }

    else {

     store = session.getStore();    

    }

    // Connect

    if (host != null || user != null || password != null) {   

     store.connect(host, user, password);

    }

    else {

     store.connect();

    }

   }

  } catch (MessagingException e) {

   // TODO Auto-generated catch block

   e.printStackTrace();

  }

 }

 

}