如何使用 Scala/Java 启动 Apache MINA FTP 服务器？

Question

I'm trying to embed an Apache MINA FTP server in my Scala application, and am having trouble spiking it out. I'm using Apache FtpServer 1.05 , and have found a couple of examples on their site which don't seem to work when I Scala-ize them.

Here's my code:

package aperture

import org.apache.ftpserver.listener.ListenerFactory
import org.apache.ftpserver.ftplet._
import org.apache.ftpserver.{FtpServerFactory, FtpServer}
import java.io.File
import org.apache.ftpserver.usermanager.{UserFactory, SaltedPasswordEncryptor, PropertiesUserManagerFactory}

object Main {
    def main(args: Array[String]) {
        val serverFactory: FtpServerFactory = new FtpServerFactory()
        val listenerFactory: ListenerFactory = new ListenerFactory()

        listenerFactory.setPort(2221);
        listenerFactory.setServerAddress("localhost")
        listenerFactory.setImplicitSsl(false);

        serverFactory.addListener("default", listenerFactory.createListener())

        val userManagerFactory: PropertiesUserManagerFactory = new PropertiesUserManagerFactory()
        userManagerFactory.setFile(new File("myusers.properties"))
        userManagerFactory.setPasswordEncryptor(new SaltedPasswordEncryptor())
        val userManager: UserManager = userManagerFactory.createUserManager()

        val userFact: UserFactory = new UserFactory()
        userFact.setName("myNewUser")
        userFact.setPassword("secret")
        userFact.setHomeDirectory("ftproot")
        val user: User = userFact.createUser()
        userManager.save(user)

        serverFactory.setUserManager(userManagerFactory.createUserManager())

        // start the server
        val server: FtpServer = serverFactory.createServer()
        server.start()
    }
}

The code's valid, and the server appears to start on port 2221, but I can't connect to it: ftp: localhost:2221: No address associated with hostname and ftp: 127.0.0.1:2221: Name or service not known .

Any thoughts?

Answer 1

I was doing two things wrong:

1. I was connecting to the ftp server using the command ftp localhost:2221 , instead of the correct way (with a space instead of a colon) ftp localhost 2221 .
2. I created a UserManager, but never ended up using it. I changed serverFactory.setUserManager(userManagerFactory.createUserManager()) to serverFactory.setUserManager(userManager) .