Java FTPSClient TLS与pureftp服务器的FTP连接在storeFile上挂起

如何解决Java FTPSClient TLS与pureftp服务器的FTP连接在storeFile上挂起

我正在尝试使用org.apache.commons.net.ftp使用以下Java代码将文件存储在pureftp服务器上

https://dbpedia.org/sparql

从日志中可以看到，该过程登录并创建目录，但是随后挂起并尝试在该新目录中存储37KB文件。该过程在响应“ 150 Accepted data connection”后挂起，未完成。

import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPReply;
import org.apache.commons.net.ftp.FTPSClient;

public void upload2ndToServer(String directory) throws Exception {

    LOG.debug("upload2ndToServer " + directory);
    FTPSClient ftp = new FTPSClient("TLS",false);
    int reply;
    ftp.connect(GetConfigValue("2nd","RemoteAddress"));
    ftp.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out)));

    reply = ftp.getReplyCode();
    if (!FTPReply.isPositiveCompletion(reply)) {
        ftp.disconnect();
        throw new Exception("Exception in connecting to FTP Server");
    }
    
    ftp.login(GetConfigValue("2nd","RemoteLogin"),GetConfigValue("2nd","RemotePassword"));
    LOG.debug("FTP info: " + ftp.getStatus() + " : " + " : " + ftp.getReplyString());
    ftp.changeWorkingDirectory(GetConfigValue("2nd","RemoteDirectory"));
    ftp.setFileType(FTP.BINARY_FILE_TYPE);
    ftp.setControlEncoding("UTF8");
    ftp.execPBSZ(0);
    ftp.execPROT("P");
    try {
        upload(new File(directory),ftp);
    } catch (Exception e) {
        ftp.disconnect();
        LOG.info("ERROR FTP disconnected: " + e.getMessage());
    }
}

public void upload(File src,FTPSClient ftp) throws IOException {

    LOG.debug("upload " + src.getPath());
    if (src.isDirectory()) {
        LOG.debug("directory " + src.getName());
        ftp.makeDirectory(src.getName());
       
        ftp.changeWorkingDirectory(src.getName());
        for (File file : src.listFiles()) {
            upload(file,ftp);
        }
        ftp.changeToParentDirectory();
    } else {
        InputStream input = null;
        try  {
  ftp.enterLocalPassiveMode();
              
  LOG.debug("FTP info: " + ftp.getStatus() + " : " + " : " + ftp.getReplyString());
            BufferedInputStream buffIn = null;
            buffIn = new BufferedInputStream(new FileInputStream(src.getPath()));
            boolean result = ftp.storeFile(src.getName(),buffIn);
            buffIn.close();
            LOG.debug(result + " stored file " + src.getName() + " code:" + ftp.getReplyCode());
            LOG.debug("reply" + ftp.getReplyString());
        } finally {
            IOUtils.close(input);
        }
    }
}

Filezilla日志：

2020-09-08 14:14:36,330 DEBUG [restartedMain] com.jahtoe.pes.PROCESS: upload /home/vmdovs/Two
2020-09-08 14:14:36,331 DEBUG [restartedMain] com.jahtoe.pes.PROCESS: directory Two
MKD Two
257-"Two" : The directory was successfully created
257 1 Kbytes used (0%) - authorized: 10240000 Kb
CWD Two
250 OK. Current directory is /_admin_/lsi/provincelcddsds1/Two
2020-09-08 14:14:37,439 DEBUG [restartedMain] com.jahtoe.pes.PROCESS: upload /home/vmdovs/Two/test.txt.gz
STAT
211 http://www.pureftpd.org/
2020-09-08 14:14:37,874 DEBUG [restartedMain] com.jahtoe.pes.PROCESS: FTP info: 211 http://www.pureftpd.org/
 :  : 211 http://www.pureftpd.org/

PASV
227 Entering Passive Mode (9,9,9)
STOR test.txt.gz
150 Accepted data connection

有人对如何解决此问题有建议吗？

您能解释一下filezilla日志行 226-Options：-a -l 的意思吗？

问候 继续

解决方法

事实证明，如果我将依赖关系从

<dependency>
<groupId>commons-net</groupId>
<artifactId>commons-net</artifactId>
<version>3.7</version>

到

<dependency>
<groupId>commons-net</groupId>
<artifactId>commons-net</artifactId>
<version>3.6</version>

然后它将按预期工作。