[java] Commons Net 예제

걍 FTP 관련된 질문이 많이들 올라오는데..

예전 sun 패키지를 이용하는 경우가 많더군요.

그래서 commons net 의 api를 잠깐 살펴보고

listing과 get을 한번 해보았습니다.

두가지가 쉽고 빠르게 되었으니..

다른 것들도 쉽게 지원이 되겠지요.

맘에 드네요 ^^;;

 

ps : 라이브러리로 필요한 것은.. commons net, oro, commons lang 입니다.

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/*
 * Created on 2004. 12. 11.
 */
package ftp;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPListParseEngine;

/**
 * @author seveny
 */
public class FTPClientTest1 {

 public static void main(String[] args) {
  
  FTPClient client = null;
  
  
  // 로그인
  try {
   client = new FTPClient();

   client.setCommandEncoding("euc-kr");

   System.out.println("FTP Client Test Program with Commons NET");
   System.out.println("test by seveny (2004.12.13)");
   System.out.println();
   
   client.connect("ftp.ibiblio.org");
   System.out.println("Connected to ftp.ibiblio.org...");
   
   client.login("anonymous", "anonymous");
   System.out.println("anonymous login success...");
   
  } catch (Exception e) {
   System.out.println("ftp 로그인 실패");
   e.printStackTrace();
   System.exit(-1);
  }
  
  
  System.out.println("Listing /pub/languages/java/javafaq ...");
  System.out.println();
  
  // 리스팅
  try {
   FTPListParseEngine engine = client.initiateListParsing("unix", "pub/languages/java/javafaq");
   
   System.out.println(" " + StringUtils.rightPad("Name", 30) + StringUtils.leftPad("Size", 10) + " ");
   System.out.println("-" + StringUtils.leftPad("-", 30, "-") + StringUtils.leftPad("-", 10, "-") + "-");
   
   int total = 0;
   
   while (engine.hasNext()) {
    FTPFile[] files = engine.getNext(25);
    total += files.length;
    
    for (int i = 0; i < files.length; i++) {
     FTPFile file = files[i];   
     System.out.println(StringUtils.rightPad(" " + file.getName(), 30) + StringUtils.leftPad("" + file.getSize(), 10) + " ");
    }
   }
   
   System.out.println("-" + StringUtils.leftPad("-", 30, "-") + StringUtils.leftPad("-", 10, "-") + "-");
   System.out.println(" total : " + total);
   System.out.println();
      
  } catch (Exception e) {
   System.out.println("ftp 리스팅 실패");
   e.printStackTrace();
   System.exit(-1);   
  }
  
  
  System.out.println();
  System.out.println("Getting javaio.jar...");
  
  try {
   File file = new File("d:\\javaio.jar");
   OutputStream fos = new FileOutputStream(file);
   if (client.retrieveFile("pub/languages/java/javafaq/javaio.jar", fos) == true)
       System.out.println("Success to getting javaio.jar... (size : " + file.length() + ")");
   
   fos.close();   
   System.out.println();
   
  } catch (Exception e) {
   System.out.println("File Get 실패");
   e.printStackTrace();
   System.exit(-1);
  }
   
   
  // 로그 아웃
  try {
   client.logout(); 
   System.out.println("Logged out");
  } catch (Exception e) {
   System.out.println("ftp 로그아웃 실패 : " + e);
  }
  
  if (client.isConnected())
   try {
    client.disconnect();
   } catch (IOException e1) {
    e1.printStackTrace();
   }
  
  client = null;
 }
}