Mina FTP服务器android实现正常运行，但无法验证用户身份

Question

我遵循了网上找到的Mina Apache身份验证教程，当我让我的Android应用程序启动服务器时，它可以识别试图登录的用户，但是即使密码正确，它也给我提供了不正确的密码 users.properties文件。

我尝试遵循此处找到的实现： https://www.cnblogs.com/happyxiaoyu02/archive/2013/04/15/6818957.html 并阅读apache网站上的文档。

公共类FtpServerActivity扩展了活动{

private FtpServer mFtpServer;  
private String ftpConfigDir= Environment.getExternalStorageDirectory().getAbsolutePath()+"/ftpConfig/";  

@Override  
public void onCreate(Bundle savedInstanceState) {  
    super.onCreate(savedInstanceState);  
    setContentView(R.layout.main);  

    TextView tv=(TextView)findViewById(R.id.tvText);  
    String info="请通过浏览器或者我的电脑访问以下地址\n"+"ftp://"+getLocalIpAddress()+":2221\n";  
    tv.setText(info);  

    File f=new File(ftpConfigDir);  
    if(!f.exists())  
        f.mkdir();  
    copyResourceFile(R.raw.users, ftpConfigDir+"users.properties");  
    Config1();  
}  

 public String getLocalIpAddress() {  
        String strIP=null;  
        try {  
            for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {  
                NetworkInterface intf = en.nextElement();  
                for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {  
                    InetAddress inetAddress = enumIpAddr.nextElement();  
                    if (!inetAddress.isLoopbackAddress()) {  
                        strIP= inetAddress.getHostAddress().toString();  
                    }  
                }  
            }  
        } catch (SocketException ex) {  
            Log.e("msg", ex.toString());  
        }  
        return strIP;  
    }  

private void copyResourceFile(int rid, String targetFile){  
    InputStream fin = ((Context)this).getResources().openRawResource(rid);  
    FileOutputStream fos=null;  
    int length;  
    try {  
        fos = new FileOutputStream(targetFile);  
        byte[] buffer = new byte[1024];   
        while( (length = fin.read(buffer)) != -1){  
            fos.write(buffer,0,length);  
        }  
    } catch (FileNotFoundException e) {  
        e.printStackTrace();  
    } catch (IOException e) {  
        e.printStackTrace();  
    } finally{  
        if(fin!=null){  
            try {  
                fin.close();  
            } catch (IOException e) {  
                e.printStackTrace();  
            }  
        }  
         if(fos!=null){  
             try {  
                fos.close();  
            } catch (IOException e) {  
                e.printStackTrace();  
            }  
         }  
    }  
}  

void Config1(){  


        FtpServerFactory serverFactory = new FtpServerFactory();  

        ListenerFactory factory = new ListenerFactory();  

        PropertiesUserManagerFactory userManagerFactory = new PropertiesUserManagerFactory();  

        String[] str ={"mkdir", ftpConfigDir};  
        try {   
            Process ps = Runtime.getRuntime().exec(str);  
            try {  
                ps.waitFor();  
            } catch (InterruptedException e) {  
                e.printStackTrace();  
            }   
        }catch (IOException e) {  
            e.printStackTrace();  
        }  

        String filename=ftpConfigDir+"users.properties";//"/sdcard/users.properties";  
        File files=new File(filename);  

        userManagerFactory.setFile(files);  
        serverFactory.setUserManager(userManagerFactory.createUserManager());  
        // set the port of the listener  
        factory.setPort(2221);  

        // replace the default listener  
        serverFactory.addListener("default", factory.createListener());  

        // start the server  
        FtpServer server = serverFactory.createServer();   
        this.mFtpServer = server;         
        try {  
            server.start();  
        } catch (FtpException e) {  
            e.printStackTrace();  
        }  
}  

void Config2(){  



    FtpServerFactory serverFactory = new FtpServerFactory();  

    ListenerFactory factory = new ListenerFactory();  

    // set the port of the listener  
    factory.setPort(2221);  

    // define SSL configuration  
    SslConfigurationFactory ssl = new SslConfigurationFactory();  
    ssl.setKeystoreFile(new File(ftpConfigDir+"ftpserver.jks"));  
    ssl.setKeystorePassword("password");  

    // set the SSL configuration for the listener  
    factory.setSslConfiguration(ssl.createSslConfiguration());  
    factory.setImplicitSsl(true);  

    // replace the default listener  
    serverFactory.addListener("default", factory.createListener());  

    PropertiesUserManagerFactory userManagerFactory = new PropertiesUserManagerFactory();  
    userManagerFactory.setFile(new File(ftpConfigDir+"users.properties"));  

    serverFactory.setUserManager(userManagerFactory.createUserManager());  

    // start the server  
    FtpServer server = serverFactory.createServer();   
    this.mFtpServer = server;    
    try {  
        server.start();  
    } catch (FtpException e) {  
        e.printStackTrace();  
    }  
}  

@Override  
protected void onDestroy() {  
    super.onDestroy();  

    if(null != mFtpServer) {  
        mFtpServer.stop();  
        mFtpServer = null;  
    }  
}  

}

它确实在sdcard的目录中创建了users.properties文件。我尝试手动更改文件中的用户名和密码，但在尝试连接时始终会返回530身份验证失败。 这是我在家里运行旧的kitkat 4.4操作系统的小型android物联网设备。