Spring Integration SFTP通道适配器没有将消息发送到下游服务激活器以进行第二次轮询

Question

我试图实现简单的SFTP通道适配器，以接受任何文件名的文件（允许重复的文件名）。在第一次轮询中，文件将从SFTP服务器目录传输到本地目录，订阅此通道的服务激活程序能够接收消息，但在第二次轮询中，如果在SFTP服务器中保留同名文件，则文件将被传输，但服务激活程序无法获得消息。我试图实现本地过滤器，但它进入了无限循环（轮询文件并创建消息）。

<int:channel id="inboundMGetRecursive">
    <int:queue/>
</int:channel>

<int-sftp:inbound-channel-adapter id="sftpInboundAdapter"
                                  auto-startup="true"
                                  channel="channel1"
                                  session-factory="sftpSessionFactory"
                                  local-directory="c:/tmp/"
                                  remote-directory="${sftp.file.remote.inbound.dir}"
                                  auto-create-local-directory="false"
                                  filename-pattern="*.txt"
                                  local-filter="acceptAll">
    <int:poller fixed-delay="60000" error-channel="sftpExceptionsChannel"
                max-messages-per-poll="-1"/>
<bean id="acceptAll" class="org.springframework.integration.file.filters.AcceptAllFileListFilter"/
<int:service-activator id="serviceActivator" input-channel="channel1" ref="fileMoverHandler"
                       method="method1">
    <int:poller fixed-rate="3000" max-messages-per-poll="-1"/>
</int:service-activator>

2016-12-14 13:25:39,632 [task-scheduler-1] [handlers.FileFilter] INFO  - Filter Activated
2016-12-14 13:25:39,635 [task-scheduler-1] [handlers.FileFilter] INFO  - file name : config.txt
2016-12-14 13:25:39,636 [task-scheduler-1] [file.FileReadingMessageSource] DEBUG - Added to queue: [C:\tmp\csvfiles\staging\config.txt]
2016-12-14 13:25:39,636 [task-scheduler-1] [file.FileReadingMessageSource] INFO  - Created message: [GenericMessage [payload=C:\tmp\csvfiles\staging\config.txt, headers={id=4a062556-4181-2806-d2ee-c0aa3221aec3, timestamp=1481743539636}]]
2016-12-14 13:25:39,636 [task-scheduler-1] [endpoint.SourcePollingChannelAdapter] DEBUG - Poll resulted in Message: GenericMessage [payload=C:\tmp\csvfiles\staging\config.txt, headers={id=4a062556-4181-2806-d2ee-c0aa3221aec3, timestamp=1481743539636}]
2016-12-14 13:25:39,636 [task-scheduler-1] [channel.QueueChannel] DEBUG - preSend on channel 'inboundMGetRecursive', message: GenericMessage [payload=C:\tmp\csvfiles\staging\config.txt, headers={id=4a062556-4181-2806-d2ee-c0aa3221aec3, timestamp=1481743539636}]
2016-12-14 13:25:39,636 [task-scheduler-1] [channel.QueueChannel] DEBUG - postSend (sent=true) on channel 'inboundMGetRecursive', message: GenericMessage [payload=C:\tmp\csvfiles\staging\config.txt, headers={id=4a062556-4181-2806-d2ee-c0aa3221aec3, timestamp=1481743539636}]
2016-12-14 13:25:39,637 [task-scheduler-1] [handlers.FileFilter] INFO  - Filter Activated
2016-12-14 13:25:39,637 [task-scheduler-1] [handlers.FileFilter] INFO  - file name : config.txt
2016-12-14 13:25:39,637 [task-scheduler-1] [file.FileReadingMessageSource] DEBUG - Added to queue: [C:\tmp\csvfiles\staging\config.txt]
2016-12-14 13:25:39,638 [task-scheduler-1] [file.FileReadingMessageSource] INFO  - Created message: [GenericMessage [payload=C:\tmp\csvfiles\staging\config.txt, headers={id=a2df4814-f759-0440-8ce2-c8d969a9315d, timestamp=1481743539638}]]
2016-12-14 13:25:39,638 [task-scheduler-1] [endpoint.SourcePollingChannelAdapter] DEBUG - Poll resulted in Message: GenericMessage [payload=C:\tmp\csvfiles\staging\config.txt, headers={id=a2df4814-f759-0440-8ce2-c8d969a9315d, timestamp=1481743539638}]
2016-12-14 13:25:39,638 [task-scheduler-1] [channel.QueueChannel] DEBUG - preSend on channel 'inboundMGetRecursive', message: GenericMessage [payload=C:\tmp\csvfiles\staging\config.txt, headers={id=a2df4814-f759-0440-8ce2-c8d969a9315d, timestamp=1481743539638}]
2016-12-14 13:25:39,639 [task-scheduler-1] [channel.QueueChannel] DEBUG - postSend (sent=true) on channel 'inboundMGetRecursive', message: GenericMessage [payload=C:\tmp\csvfiles\staging\config.txt, headers={id=a2df4814-f759-0440-8ce2-c8d969a9315d, timestamp=1481743539638}]
2016-12-14 13:25:39,639 [task-scheduler-1] [handlers.FileFilter] INFO  - Filter Activated
2016-12-14 13:25:39,639 [task-scheduler-1] [handlers.FileFilter] INFO  - file name : config.txt
2016-12-14 13:25:39,640 [task-scheduler-1] [file.FileReadingMessageSource] DEBUG - Added to queue: [C:\tmp\csvfiles\staging\config.txt]
2016-12-14 13:25:39,640 [task-scheduler-1] [file.FileReadingMessageSource] INFO  - Created message: [GenericMessage [payload=C:\tmp\csvfiles\staging\config.txt, headers={id=fd1ace38-6550-82ea-89c5-2a6229463167, timestamp=1481743539640}]]
2016-12-14 13:25:39,640 [task-scheduler-1] [endpoint.SourcePollingChannelAdapter] DEBUG - Poll resulted in Message: GenericMessage [payload=C:\tmp\csvfiles\staging\config.txt, headers={id=fd1ace38-6550-82ea-89c5-2a6229463167, timestamp=1481743539640}]
2016-12-14 13:25:39,640 [task-scheduler-1] [channel.QueueChannel] DEBUG - preSend on channel 'inboundMGetRecursive', message: GenericMessage [payload=C:\tmp\csvfiles\staging\config.txt, headers={id=fd1ace38-6550-82ea-89c5-2a6229463167, timestamp=1481743539640}]
2016-12-14 13:25:39,640 [task-scheduler-1] [channel.QueueChannel] DEBUG - postSend (sent=true) on channel 'inboundMGetRecursive', message: GenericMessage [payload=C:\tmp\csvfiles\staging\config.txt, headers={id=fd1ace38-6550-82ea-89c5-2a6229463167, timestamp=1481743539640}]

请帮助我如何使用过滤器来接受所有文件。

Answer 1

当使用接受所有本地筛选器时，您需要在处理完成后，在下一次轮询之前，从本地磁盘中删除/重命名文件。

除非同时删除远程文件，否则还应该在远程筛选器中使用FTPpersistentAcceptonceFileListFilter，以便在修改的时间戳更改之前不会重新获取文件。