java使用IMAP连接Gmail并解析邮件

import java.util.List;
import java.util.Properties;
import java.util.Date;
import java.util.Locale;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.text.SimpleDateFormat;
import javax.mail.Session;
import javax.mail.MessagingException;
import javax.mail.Store;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.NoSuchProviderException;
import javax.mail.Address;
import javax.mail.internet.MimeMessage;
import java.text.SimpleDateFormat;

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

      String host = "imap.gmail.com";
      String username = "myusername";
      String password = "mypassword";

      SimpleDateFormat myFormatter = new SimpleDateFormat( "yyyy-MM-dd",Locale.US );

      Properties props = System.getProperties();
      props.setProperty( "mail.store.protocol","imaps" );

      BufferedWriter myWriter = null;
      try {
          myWriter = new BufferedWriter( new FileWriter( 
        "/home/diggler/Desktop/groovy_testing/BigBendHotSprings/BBHSHelpers.csv" ) );
          myWriter.write( ""Sent Date","Subject","From","E-Mail","Phone Number","Skills & Interests","Comments"n" );
      }
      catch ( IOException myIOE ) {
          myIOE.printStackTrace();
      }

      try {

        Session mySession = Session.getDefaultInstance( props,null );
        Store myStore = mySession.getStore("imaps");
        myStore.connect( host,username,password );

        System.out.println( myStore );

        Folder inbox = myStore.getFolder("BBHS Helpers");
        inbox.open(Folder.READ_ONLY);
        Message messages[] = inbox.getMessages();
        System.out.println( messages.length );

        for ( Message message:messages ) {
            Address addys[] = message.getReplyTo();
            for ( Address addy:addys ) {
                //System.out.println( addy.toString() );
              if (  addy.toString().trim().equals( "alchemiculture <[email?protected]>" ) ) {
                 if ( message.getSubject().startsWith( "BigBendHotSprings.org Message from" ) ) {
                     String messageSubject =  message.getSubject();
                     String sentDate = myFormatter.format( message.getSentDate() );
                     MimeMessage myMimeMessage = (MimeMessage) message;
                   try {
                       // System.out.println( messageSubject );
                       // System.out.println( sentDate );
                      String messageContent = (String) myMimeMessage.getContent();
                      String messageContentLines[] = messageContent.split("n");
                      String from = "";
                      String eMail = "";
                      String phoneNumber = "";
                      for ( String line:messageContentLines ) {
                         if ( line.startsWith( "From:" ) ) {
                            from = line.split(":")[1].trim();
                         }
                         if ( line.startsWith( "Email:" ) ) {
                            eMail = line.split(":")[1].trim();
                         }
                         if ( line.startsWith( "Phone:" ) ) {
                            phoneNumber = line.split(":")[1].trim();
                         }
                      }
                      String messageContentSplits[] = messageContent.split("Skills and Interests:");
                      String messageContentSplitsII[] = messageContentSplits[1].split("Comments:");
                      String skillsAndInterests = messageContentSplitsII[0].trim();
                      skillsAndInterests = skillsAndInterests.replaceAll( "n","" );
                      skillsAndInterests = skillsAndInterests.replaceAll( ""","" );
                      skillsAndInterests = skillsAndInterests.replaceAll( ",","" );
                      String comments = messageContentSplitsII[1].trim();
                      comments = comments.replaceAll( "n","" );
                      comments = comments.replaceAll( ""","" );
                      comments = comments.replaceAll( ","" );

                      // System.out.println( skillsAndInterests );
                      // System.out.println( comments );

                      myWriter.write( """ + sentDate + "","" + messageSubject + "","" + 
            from + "","" + eMail + "","" + phoneNumber + "","" + s

            killsAndInterests + "","" + comments + ""n" );

                   }
                   catch ( IOException myIOE ) {
                       myIOE.printStackTrace();
                   }
                 }
              }
            }
        }

      }
      catch ( NoSuchProviderException e ) {
    e.printStackTrace();
      }
      catch ( MessagingException e ) {
          e.printStackTrace();
      }

      try {
          myWriter.close();
      }
      catch ( IOException myIOE ) {
          myIOE.printStackTrace();
      }

   }
}