0
我正在構建一個應用程序，該應用程序向遠程FTP服務器發送/接收大量數據。我想通過SocketConnection實現FTP命令。在驗證了我想要開始下載/上傳的所需響應之後，我必須先打開連接，然後再打開用戶，然後輸入服務器的密碼。我不知道如何開始。我只有想法：如何通過SocketConnection實現命令來與FTP服務器通話
public class SimpleFTP
{
private static boolean DEBUG = false;
StreamConnectionNotifier connectionNofitier = null;
InputStreamReader reader = null;
OutputStreamWriter writer = null;
StreamConnection conn = null;
private static String URL = null;
private String server = "XXX.XXX.XXX.XX";
private String port = "21";
private String user = "user";
private String pwd = "pwd";
public SimpleFTP()
{
}
public void connect() throws IOException
{
try
{
URL = "socket://" + server + port + user + pwd+";deviceside=true";
URL = "socket://" + server + port +";deviceside=true";
connectionNofitier = (StreamConnectionNotifier) Connector.open(URL);
System.out.println(Connector.open(URL));
if(connectionNofitier!=null)
System.out.println("StreamConnectionNotifier is already connected..!!");
conn = (StreamConnection)connectionNofitier.acceptAndOpen(); ;
if(conn!=null) //my Simulator hangs here and does nothing....
System.out.println("StreamConnection is already connected..!!");
reader = new InputStreamReader(conn.openInputStream());
writer = new OutputStreamWriter(conn.openOutputStream()) ;
}
catch(Exception e)
{
System.out.println("Exception in Connect : "+e.toString());
}
}
}
我需要從專家的建議/建議如何執行此操作。