Question

有人遇到吗？基本上，我的目标是即使应用程序被退回也要处理一次文件

@Bean
public S3InboundFileSynchronizer s3InboundFileSynchronizer() throws Exception {
    S3InboundFileSynchronizer synchronizer = new S3InboundFileSynchronizer(amazonS3());
    synchronizer.setDeleteRemoteFiles(false);
    synchronizer.setPreserveTimestamp(true);
    synchronizer.setRemoteDirectory(sourceBucket + "/dir/");
    synchronizer.setFilter(new S3PersistentAcceptOnceFileListFilter(new SimpleMetadataStore(), "simpleMetadataStore"));
    return synchronizer;
}

private AmazonS3 amazonS3() throws Exception {      
    return clientFactory.getClient(AmazonS3.class);
}

@Bean
@InboundChannelAdapter(value = "s3FilesChannel", poller = @Poller(fixedDelay = "5000"))
public S3InboundFileSynchronizingMessageSource s3InboundFileSynchronizingMessageSource() throws Exception {
    S3InboundFileSynchronizingMessageSource messageSource =
            new S3InboundFileSynchronizingMessageSource(s3InboundFileSynchronizer());
    messageSource.setAutoCreateLocalDirectory(true);
    messageSource.setLocalDirectory(new File("c:/temp/"));
    messageSource.setLocalFilter(new FileSystemPersistentAcceptOnceFileListFilter(new SimpleMetadataStore(), "fsSimpleMetadataStore"));             
    return messageSource;
}

Answer 1

您的问题是使用内存SimpleMetadataStore，因此在应用程序重新启动后，您将丢失存储在其中的所有信息。

考虑改用一些持久性存储实现，例如对于AWS，我们有一个DynamoDbMetadataStore：https://github.com/spring-projects/spring-integration-aws#metadata-store-for-amazon-dynamodb

S3PersistentAcceptOnceFileListFilter在应用程序重新启动时为现有/同步文件生成消息

1 个答案: