删除Java Mail中已删除的电子邮件

Question

我删除电子邮件的方法似乎有效，但当我检查我的邮件客户端时，我可以看到邮件仍然存在。

import org.example.foo.*

现在我必须手动删除已删除的项目，否则每次下载@Async public void deleteEmailAsync(Email email) { LOGGER.debug("Deleting email: " + email.getSubject()); Properties properties = getServerProperties(this.protocol, this.host, this.port); Session session = Session.getDefaultInstance(properties); try { // connects to the message store Store store = session.getStore(protocol); store.connect(this.userName, this.password); // opens the inbox folder Folder folderInbox = store.getFolder("INBOX"); folderInbox.open(Folder.READ_WRITE); // fetches new messages from server Message[] messages = folderInbox.getMessages(); for (int i = 0; i < messages.length; i++) { Message msg = messages[i]; Address[] fromAddress = msg.getFrom(); if (fromAddress[0].toString().contains(email.getFrom()) && msg.getSubject().equals(email.getSubject()) ) { msg.setFlag(Flags.Flag.DELETED, true); } } // disconnect folderInbox.close(false); store.close(); } catch (NoSuchProviderException e) { LOGGER.error("No provider for protocol: " + protocol + " " + e.getMessage()); } catch (MessagingException e) { LOGGER.error("Could not connect to the message store " + e.getMessage()); } } 需要花费更多时间。

如何删除已删除的邮件？

Answer 1

你忘了关闭文件夹了！这应该可以使它发挥作用。

@Async
public void deleteEmailAsync(Email email) {
    LOGGER.debug("Deleting email: " + email.getSubject());

    Properties properties = getServerProperties(this.protocol, this.host, this.port);
    Session session = Session.getDefaultInstance(properties);

    try {
        // connects to the message store
        Store store = session.getStore(protocol);
        store.connect(this.userName, this.password);

        // opens the inbox folder
        Folder folderInbox = store.getFolder("INBOX");
        folderInbox.open(Folder.READ_WRITE);

        // fetches new messages from server
        Message[] messages = folderInbox.getMessages();

        for (int i = 0; i < messages.length; i++) {
            Message msg = messages[i];
            Address[] fromAddress = msg.getFrom();
            if (fromAddress[0].toString().contains(email.getFrom()) 
                    && msg.getSubject().equals(email.getSubject()) ) {
                msg.setFlag(Flags.Flag.DELETED, true);
            }
        }

        // disconnect
        folderInbox.close(true);
        store.close();

    } catch (NoSuchProviderException e) {
        LOGGER.error("No provider for protocol: " + protocol + " " + e.getMessage());
    } catch (MessagingException e) {
        LOGGER.error("Could not connect to the message store " + e.getMessage());
    } 
}