FTPサーバーをスタンドアロンで開き、別のコンピューターのクライアントにファイルをコピーできるようにコードを書き込もうとしていますが、サーバー側のプログラミングは初めてで、方法がわかりません。
私は Apache FtpServer を取得しましたが、それを使用することに少し混乱し、それを使用する方法の基本的な手順を探しています。多分次のようなもの:
非常に便利なApache FtpServerを使用して、基本的な例を書いてみましょう。
_FtpServerFactory serverFactory = new FtpServerFactory();
ListenerFactory factory = new ListenerFactory();
factory.setPort(1234);// set the port of the listener (choose your desired port, not 1234)
serverFactory.addListener("default", factory.createListener());
PropertiesUserManagerFactory userManagerFactory = new PropertiesUserManagerFactory();
userManagerFactory.setFile(new File("/home/blablah/myusers.properties"));//choose any. We're telling the FTP-server where to read its user list
userManagerFactory.setPasswordEncryptor(new PasswordEncryptor()
{//We store clear-text passwords in this example
@Override
public String encrypt(String password) {
return password;
}
@Override
public boolean matches(String passwordToCheck, String storedPassword) {
return passwordToCheck.equals(storedPassword);
}
});
//Let's add a user, since our myusers.properties file is empty on our first test run
BaseUser user = new BaseUser();
user.setName("test");
user.setPassword("test");
user.setHomeDirectory("/home/blablah");
List<Authority> authorities = new ArrayList<Authority>();
authorities.add(new WritePermission());
user.setAuthorities(authorities);
UserManager um = userManagerFactory.createUserManager();
try
{
um.save(user);//Save the user to the user list on the filesystem
}
catch (FtpException e1)
{
//Deal with exception as you need
}
serverFactory.setUserManager(um);
Map<String, Ftplet> m = new HashMap<String, Ftplet>();
m.put("miaFtplet", new Ftplet()
{
@Override
public void init(FtpletContext ftpletContext) throws FtpException {
//System.out.println("init");
//System.out.println("Thread #" + Thread.currentThread().getId());
}
@Override
public void destroy() {
//System.out.println("destroy");
//System.out.println("Thread #" + Thread.currentThread().getId());
}
@Override
public FtpletResult beforeCommand(FtpSession session, FtpRequest request) throws FtpException, IOException
{
//System.out.println("beforeCommand " + session.getUserArgument() + " : " + session.toString() + " | " + request.getArgument() + " : " + request.getCommand() + " : " + request.getRequestLine());
//System.out.println("Thread #" + Thread.currentThread().getId());
//do something
return FtpletResult.DEFAULT;//...or return accordingly
}
@Override
public FtpletResult afterCommand(FtpSession session, FtpRequest request, FtpReply reply) throws FtpException, IOException
{
//System.out.println("afterCommand " + session.getUserArgument() + " : " + session.toString() + " | " + request.getArgument() + " : " + request.getCommand() + " : " + request.getRequestLine() + " | " + reply.getMessage() + " : " + reply.toString());
//System.out.println("Thread #" + Thread.currentThread().getId());
//do something
return FtpletResult.DEFAULT;//...or return accordingly
}
@Override
public FtpletResult onConnect(FtpSession session) throws FtpException, IOException
{
//System.out.println("onConnect " + session.getUserArgument() + " : " + session.toString());
//System.out.println("Thread #" + Thread.currentThread().getId());
//do something
return FtpletResult.DEFAULT;//...or return accordingly
}
@Override
public FtpletResult onDisconnect(FtpSession session) throws FtpException, IOException
{
//System.out.println("onDisconnect " + session.getUserArgument() + " : " + session.toString());
//System.out.println("Thread #" + Thread.currentThread().getId());
//do something
return FtpletResult.DEFAULT;//...or return accordingly
}
});
serverFactory.setFtplets(m);
//Map<String, Ftplet> mappa = serverFactory.getFtplets();
//System.out.println(mappa.size());
//System.out.println("Thread #" + Thread.currentThread().getId());
//System.out.println(mappa.toString());
FtpServer server = serverFactory.createServer();
try
{
server.start();//Your FTP server starts listening for incoming FTP-connections, using the configuration options previously set
}
catch (FtpException ex)
{
//Deal with exception as you need
}
_
サーバー側では、接続やログインなどを手動で処理する必要がないことに注意してください。Ftpletが自動的に処理します。
ただし、匿名の内部Ftpletクラスのオーバーライドされたメソッド内にカスタムの前処理または後処理を追加できます(new Ftplet(){ ... }
でインスタンス化する場合)。