sftp 网关上的 SFTP 持久只接受一次过滤器

SFTP Persistent Accept Only Once filter on sftp gateway

我有这段代码,我想在其中加入 SftpPersistentAcceptOnceFileListFilter,但我不知道如何加入。过滤器应该在本地检索文件之前。

@InboundChannelAdapter(value = "sftpMgetInputChannel",
    poller = @Poller(fixedDelay = "5000"))
public String filesForMGET(){
  return "'/tmp/input/remoteDirectory/*'";
}

@Bean
public IntegrationFlow sftpMGetFlow() {
    return IntegrationFlows.from("sftpMgetInputChannel")
            .handleWithAdapter(h -> h.sftpGateway(this.sftpSessionFactory,
             Command.MGET, "payload")
            .options(Option.RECURSIVE)
            .regexFileNameFilter("((\d{8})|*\.txt)")
            .localDirectoryExpression("'sftp-inbound/'" + "#remoteDirectory"))
            .handler(messageHandler())
            .get();
}

@Bean
public MessageChannel sftpMgetInboundChannel(){
   return new DirectChannel();
}

@Bean
public MessageHandler messageHandler(){
 return new MessageHandler() { ... }
}

使用 CompositeFileListFilterChainFileListFilterSftpRegexPatternFileListFilter 过滤器和 SftpPersistentAcceptOnceFileListFilter.

构造过滤器并使用.filter(compositeFilter())