Spring Integration SFTP入站适配器不会过滤

Question

我一直试图让sftp入站适配器使用我的自定义过滤器，甚至使用我在选项中提供的过滤器。由于某种原因，它总是忽略我的过滤器。该模式也非常简单，并且确实匹配传入的文件名，如果过滤器将被调用。

有没有人有任何想法？

<int-sftp:inbound-channel-adapter id="cobaltInbound"
channel="dealerDataInboundChannelAdapterOutputChannel"
session-factory="dealerDataSftpSessionFactory"
filter="customInboundFTPFilter"
local-directory="${ftpOutputPath}"
remote-directory="outbound"
delete-remote-files="false"
preserve-timestamp="true"
charset="UTF-8"
local-filter="acceptAllFilter">
<int:poller cron="0 0/5 * * * *" max-messages-per-poll="10" error-channel="logger"/>
</int-sftp:inbound-channel-adapter>

自定义过滤器在很大程度上是基本的：

public class GenericInboundChannelFilter implements FileListFilter {

    private Pattern pattern;

    public GenericInboundChannelFilter() {
    }

    public GenericInboundChannelFilter(String patternString) {
        this.pattern = Pattern.compile(patternString, Pattern.CASE_INSENSITIVE);
    }

    @Override
    public List filterFiles(Object[] objects) {
        ArrayList filteredFiles = new ArrayList();

        if (pattern != null && objects != null && objects.length > 0) {
            Object entry = null;
            for (Object file : objects) {
                Matcher matcher;
                if (file instanceof File) {
                    matcher = pattern.matcher(((File) file).getName());
                } else if (file instanceof FileInfo) {
                    matcher = pattern.matcher(((FileInfo) file).getFilename());
                } else {
                    continue;
                }
                if (matcher.find()) {
                    if (entry != null) {
                        //compare the two entries
                        if (file instanceof File) {
                            if (((File) entry).lastModified() < ((File) file).lastModified()) {
                                entry = file;
                            }
                        } else {
                            if (((FileInfo) entry).getModified() < ((FileInfo) file).getModified()) {
                                entry = file;
                            }
                        }
                    } else {
                        entry = file;
                    }
                }
            }
            if (entry != null) {
                filteredFiles.add(entry);
            }
        }

        return filteredFiles;
    }
}