Sping整合邮件闲置接收的问题

Question

我正在使用spring integration mail来接收来自几个可配置账户的邮件信息。

我使用的是IMAP服务器和闲置配置。

我写了以下代码。

@Autowired
private IntegrationFlowContext flowContext;
IntegrationFlow flow = null;
String userFlag = confMailIn.getHost() + "_idle_adapter";
ImapIdleChannelAdapterSpec imapIdleChannelAdapterSpec = Mail.imapIdleAdapter(connectionUrl.toString())
        .javaMailProperties(javaMailProperties)
        .shouldDeleteMessages(deleteMessages)
        .shouldMarkMessagesAsRead(markMessagesRead)
        .autoStartup(true)
        .autoCloseFolder(false)
        .userFlag(userFlag)
        .id(userFlag)
        //.searchTermStrategy(this::notSeenTerm)
        .selector(selectFunction);

if (confMailIn.isRichiedeAutenticazione()) {
    imapIdleChannelAdapterSpec = imapIdleChannelAdapterSpec.javaMailAuthenticator(new CasellaPostaleAuthenticator(cpd.getIndirizzoMail(), cpd.getUsername(), cpd.getPassword()));
}
flow = IntegrationFlows
        .from(imapIdleChannelAdapterSpec)
        .handle(message ->{
            //Prendo il closable del messaggio e valorizzo i l'elenco di closeale da chiudere
            Closeable closeable = StaticMessageHeaderAccessor.getCloseableResource(message);
            if( !closeables.containsKey(cpd.getIndirizzoMail()) ) {
                closeables.put(cpd.getIndirizzoMail(), closeable);
            }
            publishMailEvent(message);
        })
        .get();
flowContext.registration(flow).id(flowId).register();

我把自动关闭文件夹设置为false，因为如果设置为true，我就不能处理邮件了，因为我收到的是 FolderClosedException. 所以我收集了所有的 Closeable 当Spring上下文关闭时，我关闭它们（在最好的情况下......永远不会：）。

到目前为止还不错... 我注册了流程，它开始工作。但我注意到，一段时间后，它停止接收邮件信息，我需要重新启动我的服务，并再次工作一段时间。我需要重新启动我的服务，然后它又能工作一段时间。

当它工作时，我看到这些日志。

2020-04-20 16:32:57,427 25199841 [scheduling-1] DEBUG o.s.i.mail.ImapIdleChannelAdapter - waiting for mail 
2020-04-20 16:32:57,460 25199874 [scheduling-1] INFO  o.s.i.mail.ImapMailReceiver - attempting to receive mail from folder [INBOX] 
2020-04-20 16:32:57,460 25199874 [scheduling-1] DEBUG o.s.i.mail.ImapMailReceiver - This email server does not support RECENT flag, but it does support USER flags which will be used to prevent duplicates during email fetch. This receiver instance uses flag: imapmail.libero.it_idle_adapter 
2020-04-20 16:32:57,476 25199890 [scheduling-1] DEBUG o.s.i.mail.ImapMailReceiver - found 0 new messages 
2020-04-20 16:32:57,476 25199890 [scheduling-1] DEBUG o.s.i.mail.ImapMailReceiver - Received 0 messages 
2020-04-20 16:32:57,476 25199890 [scheduling-1] DEBUG o.s.i.mail.ImapIdleChannelAdapter - received 0 mail messages 
2020-04-20 16:32:57,476 25199890 [scheduling-1] DEBUG o.s.i.mail.ImapIdleChannelAdapter - Task completed successfully. Re-scheduling it again right away.

但过了一段时间后，它就停止了书写. 我感觉这与标志选项有关，但我不知道如何解决这个问题。

任何提示都是非常欢迎的

谢谢你了

Angelo

Answer 1

请在这里提出一个GH问题 https:/github.comspring-projectsspring-integrationissues。.

作为一个变通办法，你可能需要遵循docs中建议的方法。https:/docs.spring.iospring-integrationdocs5.3.0.M4referencehtmlmail.html#mail-tx-sync。. 见 Mover. 我的意思是你需要考虑到 重开 文件夹，以便能够处理邮件中的附件。