JavaMail: Garder IMAPFolder.idle() vivant

Fait le Java Mail échantillons comprennent un IMAP IDLE exemple, qui est comme suit.
En outre, les IdleManager classe pourrait être intéressant.

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import java.util.*;
import java.io.*;
import javax.mail.*;
import javax.mail.event.*;
import javax.activation.*;
import com.sun.mail.imap.*;
/* Monitors given mailbox for new mail */
public class monitor {
public static void main(String argv[]) {
if (argv.length != 5) {
System.out.println(
"Usage: monitor <host> <user> <password> <mbox> <freq>");
System.exit(1);
}
System.out.println("\nTesting monitor\n");
try {
Properties props = System.getProperties();
//Get a Session object
Session session = Session.getInstance(props, null);
//session.setDebug(true);
//Get a Store object
Store store = session.getStore("imap");
//Connect
store.connect(argv[0], argv[1], argv[2]);
//Open a Folder
Folder folder = store.getFolder(argv[3]);
if (folder == null || !folder.exists()) {
System.out.println("Invalid folder");
System.exit(1);
}
folder.open(Folder.READ_WRITE);
//Add messageCountListener to listen for new messages
folder.addMessageCountListener(new MessageCountAdapter() {
public void messagesAdded(MessageCountEvent ev) {
Message[] msgs = ev.getMessages();
System.out.println("Got " + msgs.length + " new messages");
//Just dump out the new messages
for (int i = 0; i < msgs.length; i++) {
try {
System.out.println("-----");
System.out.println("Message " +
msgs[i].getMessageNumber() + ":");
msgs[i].writeTo(System.out);
} catch (IOException ioex) { 
ioex.printStackTrace(); 
} catch (MessagingException mex) {
mex.printStackTrace();
}
}
}
});
//Check mail once in "freq" MILLIseconds
int freq = Integer.parseInt(argv[4]);
boolean supportsIdle = false;
try {
if (folder instanceof IMAPFolder) {
IMAPFolder f = (IMAPFolder)folder;
f.idle();
supportsIdle = true;
}
} catch (FolderClosedException fex) {
throw fex;
} catch (MessagingException mex) {
supportsIdle = false;
}
for (;;) {
if (supportsIdle && folder instanceof IMAPFolder) {
IMAPFolder f = (IMAPFolder)folder;
f.idle();
System.out.println("IDLE done");
} else {
Thread.sleep(freq); //sleep for freq milliseconds
//This is to force the IMAP server to send us
//EXISTS notifications. 
folder.getMessageCount();
}
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
}

OriginalL'auteur stefan.at.wpf

de vérifier le nombre de messages toutes les 5 minutes fonctionne pour moi:

new Thread()
{
@Override
public void run()
{
startTimer();
}
private void startTimer()
{
int seconds = 0;
while (true)
{
try
{
Thread.sleep(300000);
int c = folder.getMessageCount();    
}
catch (InterruptedException ex)
{
}
catch (MessagingException me)
{
}
}
}
}.start();

OriginalL'auteur user888307