测试嵌入式Mina FTPServer是否真正启动

| 我以编程方式编写了apache服务器的启动代码,如下所示:
public void _start()
{
    String Path = \"C:\\\\Dokumente und Einstellungen\\\\andjock\\\\Desktop\\\\ab\";

    File ftpDirectory = new File(Path);
    ftpDirectory.mkdirs(); 


    FtpServerFactory serverFactory = new FtpServerFactory();
    ListenerFactory factory = new ListenerFactory();
    factory.setPort(2221); 

    try {
        serverFactory.addListener(\"default\", factory.createListener());

        PropertiesUserManagerFactory userFactory = new PropertiesUserManagerFactory();
        File userFile = new File(\"C:\\\\Dokumente und Einstellungen\\\\andjock\\\\Desktop\\\\ftpusers.properties\");
        userFactory.setFile(userFile);


        UserManager um = userFactory.createUserManager();


        BaseUser user = new BaseUser();
        user.setName(\"myNewUser\");
        user.setPassword(\"secret\");
        user.setHomeDirectory(Path);


        um.save(user);

        serverFactory.setUserManager(um);

        FtpServer ftpServer = serverFactory.createServer();
        ftpServer.start();


    } catch (Exception e) {

        Logger  LOGGER = Logger.getLogger(TestapacheFtpServer.class);
        LOGGER.log(Level.FATAL, \"Unable to start test ftpserver\", e);
    }
我怎么知道服务器确实在工作? 如何从“外部”访问此apache服务器? 我在机器上尝试使用telnet和ftp(ftp 127.0.0.1),但收到了:   FTP:connect:未知错误代码 有人知道吗?我只是不想依赖jvm日志,而是对其进行测试,并访问启动它     
已邀请:
我想通了!我使用FTP客户端库(apache commons库)编写了一个客户端,以测试连接性并列出文件;这样的东西
FTPClient ftp = new FTPClient();


    ftp.connect(InetAddress.getLocalHost(), 2221);// or \"localhost\" in your case
      String loging_success = ftp.login(\"myNewUser\", \"secret\") == true ? \"success\" : \"failed\"; 
      System.out.println(\"login: \"+ loging_success);


      FTPFile[] files = ftp.listFiles();  
      System.out.println(\"Listed \"+files.length+\" files.\");
      for(FTPFile file : files) {
       System.out.println(file.getName());
      }
    

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