Spring集成ftp入站通道适配器递归同步

Question

使用Spring Integration，是否可以使用ftp入站通道适配器递归地同步文件（包括子文件夹的文件）？

Answer 1

否;但你可以与出站网关递归MGET获取完整的远程目录树...

@SpringBootApplication 
@IntegrationComponentScan 
public class So42324318Application { 

    public static void main(String[] args) { 
     ConfigurableApplicationContext context = SpringApplication.run(So42324318Application.class, args); 
     List<File> files = context.getBean(Gateway.class).fetchFiles("foo/*"); 
     System.out.println(files); 
     context.close(); 
    } 

    @MessagingGateway(defaultRequestChannel = "fetchRecursive") 
    public interface Gateway { 

     public List<File> fetchFiles(String remoteDir); 

    } 

    @Bean 
    @ServiceActivator(inputChannel = "fetchRecursive") 
    public FtpOutboundGateway gateway() { 
     // Create a recursive MGET gateway that gets the remote directory from the payload 
     FtpOutboundGateway gateway = new FtpOutboundGateway(sessionFactory(), "mget", "payload"); 
     gateway.setOptions("-R"); 
     gateway.setLocalDirectoryExpression(new SpelExpressionParser().parseExpression("#remoteDirectory")); 
     return gateway; 
    } 

    @Bean 
    public SessionFactory<FTPFile> sessionFactory() { 
     return new CachingSessionFactory<>(ftpSF()); 
    } 

    private SessionFactory<FTPFile> ftpSF() { 
     DefaultFtpSessionFactory sf = new DefaultFtpSessionFactory(); 
     sf.setHost("10.0.0.3"); 
     sf.setUsername("ftptest"); 
     sf.setPassword("ftptest"); 
     sf.setClientMode(FTPClient.PASSIVE_LOCAL_DATA_CONNECTION_MODE); 
     return sf; 
    } 

} 

结果：

2017-02-19 09:55:09.351 INFO 61921 --- [   main] o.s.integration.ftp.session.FtpSession : File has been successfully transferred from: foo/bar.tx 
2017-02-19 09:55:09.353 INFO 61921 --- [   main] o.s.integration.ftp.session.FtpSession : File has been successfully transferred from: foo/bar.txt 
2017-02-19 09:55:09.356 INFO 61921 --- [   main] o.s.integration.ftp.session.FtpSession : File has been successfully transferred from: foo/bar/abc.txt 
2017-02-19 09:55:09.358 INFO 61921 --- [   main] o.s.integration.ftp.session.FtpSession : File has been successfully transferred from: foo/baz.txt 
2017-02-19 09:55:09.362 INFO 61921 --- [   main] o.s.integration.ftp.session.FtpSession : File has been successfully transferred from: foo/foo/bar/qux.txt 
2017-02-19 09:55:09.364 INFO 61921 --- [   main] o.s.integration.ftp.session.FtpSession : File has been successfully transferred from: foo/foo/baz/fiz.txt 
[foo/bar.tx, foo/bar.txt, foo/bar/abc.txt, foo/baz.txt, foo/foo/bar/qux.txt, foo/foo/baz/fiz.txt]