Spring Boot Integration Mail-授权失败错误

Question

以下是我的用于pop3连接的spring配置bean，

    @Bean
    public IntegrationFlow mailListener() {
        return IntegrationFlows.from(Mail.pop3InboundAdapter("pop3://sample.test:Sample2test_1@xxx.xx.x.xx/INBOX")
                 .shouldDeleteMessages(true).get(), 
                 e -> e.poller(Pollers.fixedRate(5000).maxMessagesPerPoll(1)))
            .<Message>handle((payload, header) -> logMail(payload))
            .get();
    }

还要仔细检查看起来不错的凭据。 得到以下异常，

2018-06-22 19：27：54.351错误2092-[ask-scheduler-2] osintegration.handler.LoggingHandler：org.springframework.messaging.MessagingException：轮询邮件时发生故障; 嵌套异常是javax.mail.AuthenticationFailedException：授权在org.springframework.integration.endpoint.SourcePollingChannelAdapter.receiveMessage（SourcePollingChannelAdapter.java:224）的org.springframework.integration.mail.MailReceivingMessageSource.receive（MailReceivingMessageSource.java:131）处失败org.springframework.integration.endpoint.AbstractPollingEndpoint.doPoll（AbstractPollingEndpoint.java:245）at org.springframework.integration.endpoint.AbstractPollingEndpoint.access $ 000（AbstractPollingEndpoint.java:58）at org.springframework.integration.endpoint.AbstractPollingEndpoint $ 1。在org.springframework.integration.endpoint.AbstractPollingEndpoint $ 1.call（AbstractPollingEndpoint.java:190）在org.springframework.integration.endpoint.AbstractPollingEndpoint $ Poller $ 1.run（AbstractPollingEndpoint.java:353）处调用（AbstractPollingEndpoint.java:186）在org.springframew上的org.springframework.integration.util.ErrorHandlingTaskExecutor $ 1.run（ErrorHandlingTaskExecutor.java:55） org.springframework.integration.util.ErrorHandlingTaskExecutor.execute（ErrorHandlingTaskExecutor.java:51）上的ork.core.task.SyncTaskExecutor.execute（SyncTaskExecutor.java:50）org.springframework.integration.endpoint.AbstractPollingEndpoint $ Poller.run（ org.springframework.scheduling.concurrent的org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run（DelegatingErrorHandlingRunnable.java:54）的AbstractPollingEndpoint.java:344）java.util。 .Executors $ RunnableAdapter.call（未知源），java.util.concurrent.FutureTask.run（未知源），java.util.concurrent.ScheduledThreadPoolExecutor $ ScheduledFutureTask.access $ 201（未知源），java.util.concurrent.ScheduledThreadPoolExecutor $ java.util.concurrent.ThreadPoolExecutor.run的ScheduledFutureTask.run（未知源）java.lang.Thread.run（未知源）的java.util.concurrent.ThreadPoolExecutor $ Worker.run（未知源） ）由以下原因引起：javax.mail.AuthenticationFailedException：com.sun.mail.pop3.POP3Store.protocolConnect（POP3Store.java:208）的授权在javax.mail.Service.connect（Service.java:295）处失败org.springframework.java.mail.Service.connect（Service.java:125）的org.springframework.integration.mail.AbstractMailReceiver.connectStoreIfNecessary（AbstractMailReceiver.java:286）的.Service.connect（Service.java:176）。 org.springframework.integration.mail.MailReceivingMessageSource.receive（MailReceivingMessageSource.java：org.springframework.integration.mail.AbstractMailReceiver.receive（AbstractMailReceiver.java:319）处的integration.mail.AbstractMailReceiver.openFolder（AbstractMailReceiver.java:293） 112）...还有19个

Answer 1

有一个这样的选项：

/**
 * The Java Mail properties.
 * @param javaMailProperties the javaMailProperties.
 * @return the spec.
 * @see AbstractMailReceiver#setJavaMailProperties(Properties)
 */
public S javaMailProperties(Properties javaMailProperties) {

您可以在那里指定mail.debug = true来跟踪交互过程中邮件协议的状况。

更新

我们在您的日志中有这个：

DEBUG POP3: connecting to host "172.16.1.45", port 995, isSSL false
19:54:46.746 [task-scheduler-1] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'errorChannel'
19:54:46.753 [task-scheduler-1] DEBUG org.springframework.integration.channel.PublishSubscribeChannel - preSend on channel 'errorChannel', message: ErrorMessage [payload=org.springframework.messaging.MessagingException: failure occurred while polling for mail; nested exception is javax.mail.MessagingException: Connect failed;
  nested exception is:
    java.net.ConnectException: Connection refused: connect, headers={id=290f4c5a-2dfe-d7cb-0637-a0e9f0394daa, timestamp=1529677486753}]

因此，它不能仅连接到172.16.1.45:995 。 尚无身份验证握手。