“Folder in read-only mode” 异常

huangapple
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英文:

"Folder in read-only mode" exception

问题

我正在尝试运行Mail imapInboundAdapter的示例代码，并遇到以下异常：

2020-01-06 19:12:44.584 INFO 5388 --- [ scheduling-1] o.s.integration.mail.ImapMailReceiver : attempting to receive mail from folder [INBOX]
2020-01-06 19:12:44.985 ERROR 5388 --- [ scheduling-1] o.s.integration.handler.LoggingHandler : org.springframework.messaging.MessagingException: failure occurred while polling for mail; nested exception is javax.mail.MessagingException: A7 NO [CLIENTBUG] Folder in read-only mode;
  nested exception is:
	com.sun.mail.iap.CommandFailedException: A7 NO [CLIENTBUG] Folder in read-only mode
...

这可能的原因是邮箱文件夹处于只读模式。如果要解决此问题，您可以尝试以下步骤：

  1. 检查邮箱设置：确保您的邮箱设置允许通过IMAP协议进行读取。有些邮箱提供商可能需要您启用IMAP访问。请检查您的邮箱提供商的设置以确保已启用IMAP。

  2. 验证用户名和密码：确保您在连接字符串中提供的邮箱用户名和密码是正确的，以便可以成功连接到邮箱。

  3. 邮箱权限：检查您的邮箱文件夹权限，确保您有足够的权限来读取该文件夹中的邮件。有时候，只读文件夹可能会导致无法设置邮件的标志。

  4. 使用SSL连接：您的示例代码中已经使用了IMAPS协议，这意味着它使用了安全的SSL连接。确保您的邮箱服务器支持IMAPS，并且SSL设置正确。

另外，您提到在收到新邮件时出现了NullPointerException异常。这可能与收到的邮件的内容或格式有关。确保您的代码可以处理各种邮件格式和内容。

最后，您提到您的Maven依赖是spring-boot-starter-parent 2.2.2.RELEASE和javax.mail mail 1.4.7。这些依赖看起来应该是适用的，但请确保它们没有与其他依赖项产生冲突，并且您的项目配置正确。如果有必要，您可以查看最新的Spring Boot和javax.mail版本以获取更新的稳定版本。

希望这些提示可以帮助您解决问题。

英文:

I'm trying to run an example of Mail imapInboundAdapter:

@Bean
public IntegrationFlow mailListener() {
    return IntegrationFlows.from(Mail.imapInboundAdapter(
            "imaps://myemailt%40mail.ru:mypassword@imap.mail.ru:993/inbox"
            )
                    .javaMailProperties(p -> {
                        p.put("mail.debug", "false");
                        p.put("mail.auth", "true");
                        p.put("mail.imaps.ssl.trust", "*");
                    })
                    .get(),
            e -> e.poller(Pollers.fixedRate(5000).maxMessagesPerPoll(1)))
            .<Message>handle((payload, header) -> payload)
            .log()
            .get();
}

and getting the following exception:

2020-01-06 19:12:44.584  INFO 5388 --- [   scheduling-1] o.s.integration.mail.ImapMailReceiver    : attempting to receive mail from folder [INBOX]    
2020-01-06 19:12:44.985 ERROR 5388 --- [   scheduling-1] o.s.integration.handler.LoggingHandler   : org.springframework.messaging.MessagingException: failure occurred while polling for mail; nested exception is javax.mail.MessagingException: A7 NO [CLIENTBUG] Folder in read-only mode;
      nested exception is:
    	com.sun.mail.iap.CommandFailedException: A7 NO [CLIENTBUG] Folder in read-only mode
    	at org.springframework.integration.mail.MailReceivingMessageSource.doReceive(MailReceivingMessageSource.java:74)
    	at org.springframework.integration.endpoint.AbstractMessageSource.receive(AbstractMessageSource.java:167)
    	at org.springframework.integration.endpoint.SourcePollingChannelAdapter.receiveMessage(SourcePollingChannelAdapter.java:250)
    	at org.springframework.integration.endpoint.AbstractPollingEndpoint.doPoll(AbstractPollingEndpoint.java:359)
    	at org.springframework.integration.endpoint.AbstractPollingEndpoint.pollForMessage(AbstractPollingEndpoint.java:328)
    	at org.springframework.integration.endpoint.AbstractPollingEndpoint.lambda$null$1(AbstractPollingEndpoint.java:275)
    	at org.springframework.integration.util.ErrorHandlingTaskExecutor.lambda$execute$0(ErrorHandlingTaskExecutor.java:57)
    	at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50)
    	at org.springframework.integration.util.ErrorHandlingTaskExecutor.execute(ErrorHandlingTaskExecutor.java:55)
    	at org.springframework.integration.endpoint.AbstractPollingEndpoint.lambda$createPoller$2(AbstractPollingEndpoint.java:272)
    	at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
    	at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:93)
    	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
    	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    	at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
    	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    	at java.base/java.lang.Thread.run(Thread.java:834)
    Caused by: javax.mail.MessagingException: A7 NO [CLIENTBUG] Folder in read-only mode;
      nested exception is:
    	com.sun.mail.iap.CommandFailedException: A7 NO [CLIENTBUG] Folder in read-only mode
    	at com.sun.mail.imap.IMAPMessage.setFlags(IMAPMessage.java:921)
    	at javax.mail.Message.setFlag(Message.java:578)
    	at org.springframework.integration.mail.AbstractMailReceiver.setMessageFlags(AbstractMailReceiver.java:538)
    	at org.springframework.integration.mail.AbstractMailReceiver.postProcessFilteredMessages(AbstractMailReceiver.java:502)
    	at org.springframework.integration.mail.AbstractMailReceiver.searchAndFilterMessages(AbstractMailReceiver.java:426)
    	at org.springframework.integration.mail.AbstractMailReceiver.receive(AbstractMailReceiver.java:378)
    	at org.springframework.integration.mail.MailReceivingMessageSource.doReceive(MailReceivingMessageSource.java:60)
    	... 17 more
    Caused by: com.sun.mail.iap.CommandFailedException: A7 NO [CLIENTBUG] Folder in read-only mode
    	at com.sun.mail.iap.Protocol.handleResult(Protocol.java:351)
    	at com.sun.mail.imap.protocol.IMAPProtocol.storeFlags(IMAPProtocol.java:1603)
    	at com.sun.mail.imap.protocol.IMAPProtocol.storeFlags(IMAPProtocol.java:1588)
    	at com.sun.mail.imap.IMAPMessage.setFlags(IMAPMessage.java:917)
    	... 23 more

What can be the reason?

Edit 2. When the email really comes, now I'm getting the new NullPointerException:

2020-01-06 21:09:12.515  INFO 996 --- [   scheduling-1] o.s.integration.mail.ImapMailReceiver    : attempting to receive mail from folder [INBOX]
2020-01-06 21:09:17.522  INFO 996 --- [   scheduling-1] o.s.integration.mail.ImapMailReceiver    : attempting to receive mail from folder [INBOX]
2020-01-06 21:09:18.328 ERROR 996 --- [   scheduling-1] o.s.integration.handler.LoggingHandler   : org.springframework.messaging.MessagingException: failure occurred while polling for mail; nested exception is java.lang.NullPointerException
	at org.springframework.integration.mail.MailReceivingMessageSource.doReceive(MailReceivingMessageSource.java:74)
	at org.springframework.integration.endpoint.AbstractMessageSource.receive(AbstractMessageSource.java:167)
	at org.springframework.integration.endpoint.SourcePollingChannelAdapter.receiveMessage(SourcePollingChannelAdapter.java:250)
	at org.springframework.integration.endpoint.AbstractPollingEndpoint.doPoll(AbstractPollingEndpoint.java:359)
	at org.springframework.integration.endpoint.AbstractPollingEndpoint.pollForMessage(AbstractPollingEndpoint.java:328)
	at org.springframework.integration.endpoint.AbstractPollingEndpoint.lambda$null$1(AbstractPollingEndpoint.java:275)
	at org.springframework.integration.util.ErrorHandlingTaskExecutor.lambda$execute$0(ErrorHandlingTaskExecutor.java:57)
	at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50)
	at org.springframework.integration.util.ErrorHandlingTaskExecutor.execute(ErrorHandlingTaskExecutor.java:55)
	at org.springframework.integration.endpoint.AbstractPollingEndpoint.lambda$createPoller$2(AbstractPollingEndpoint.java:272)
	at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
	at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:93)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.NullPointerException
	at javax.mail.internet.MimeUtility.quote(MimeUtility.java:975)
	at javax.mail.internet.ParameterList.quote(ParameterList.java:672)
	at javax.mail.internet.ParameterList.access$200(ParameterList.java:76)
	at javax.mail.internet.ParameterList$ToStringBuffer.addNV(ParameterList.java:640)
	at javax.mail.internet.ParameterList.toString(ParameterList.java:621)
	at javax.mail.internet.ContentType.toString(ContentType.java:221)
	at com.sun.mail.imap.IMAPMessage.getDataHandler(IMAPMessage.java:644)
	at javax.mail.internet.MimeMessage.getContent(MimeMessage.java:1420)
	at org.springframework.integration.mail.AbstractMailReceiver$IntegrationMimeMessage.<init>(AbstractMailReceiver.java:661)
	at org.springframework.integration.mail.AbstractMailReceiver.postProcessFilteredMessages(AbstractMailReceiver.java:510)
	at org.springframework.integration.mail.AbstractMailReceiver.searchAndFilterMessages(AbstractMailReceiver.java:426)
	at org.springframework.integration.mail.AbstractMailReceiver.receive(AbstractMailReceiver.java:378)
	at org.springframework.integration.mail.MailReceivingMessageSource.doReceive(MailReceivingMessageSource.java:60)
	... 17 more

P.S.
Maven dependencies:

spring-boot-starter-parent 2.2.2.RELEASE

group javax.mail artifact mail version 1.4.7

答案1

得分: 1

请删除适配器规范中的.get()。

public IntegrationFlow mailListener() {
    return IntegrationFlows.from(Mail.imapInboundAdapter(
            "imaps://myemailt%40mail.ru:mypassword@imap.mail.ru:993/inbox"
            )
                    .javaMailProperties(p -> {
                        p.put("mail.debug", "false");
                        p.put("mail.auth", "true");
                        p.put("mail.imaps.ssl.trust", "*");
                    }),
            e -> e.poller(Pollers.fixedRate(5000).maxMessagesPerPoll(1)))
            .<Message>handle((payload, header) -> payload)
            .log();
}

在此使用get()会阻止框架初始化适配器 bean（从只读切换到读/写模式）。

当注入原始适配器规范时，框架将完成初始化。

英文:

Remove the .get() from the adapter spec

public IntegrationFlow mailListener() {
    return IntegrationFlows.from(Mail.imapInboundAdapter(
            &quot;imaps://myemailt%40mail.ru:mypassword@imap.mail.ru:993/inbox&quot;
            )
                    .javaMailProperties(p -&gt; {
                        p.put(&quot;mail.debug&quot;, &quot;false&quot;);
                        p.put(&quot;mail.auth&quot;, &quot;true&quot;);
                        p.put(&quot;mail.imaps.ssl.trust&quot;, &quot;*&quot;);
                    }),
            e -&gt; e.poller(Pollers.fixedRate(5000).maxMessagesPerPoll(1)))
            .&lt;Message&gt;handle((payload, header) -&gt; payload)
            .log()
            .get();
}

Using get() there prevents the framework from initializing the adapter bean (which switches the mode from read only to read/write).

When the raw adapter spec is injected, the framework will complete the initialization.

huangapple
  • 本文由 发表于 2020年1月6日 19:17:16
  • 转载请务必保留本文链接：https://go.coder-hub.com/59611134.html
  • spring-integration
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