FTP - Client 만들기

 개요

 JAVA로 간단한 FTP 클라이언트를 만들어보자

 소스

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import java.io.BufferedInputStream; import java.io.DataOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.net.Socket;   public class Client {       public static void main(String[] args) {         // TODO Auto-generated method stub         String IP = "127.0.0.1";         Socket socket = null;                  try{             socket = new Socket(IP, 8521);             System.out.println("서버와 연결");                          FileSender fs = new FileSender(socket);             fs.start();                      }catch(IOException e){             e.printStackTrace();         }     }   }   class FileSender extends Thread{     Socket socket;     DataOutputStream dos;     FileInputStream fis;     BufferedInputStream bis;              public FileSender(Socket socket){         this.socket = socket;         try{             //데이터 전송용 스트림 생성             dos = new DataOutputStream(socket.getOutputStream());         }catch(IOException e){             e.printStackTrace();         }                       }     @Override     public void run(){         try{             //String fileName = "test.txt";             String fileName = "test.png";                            dos.writeUTF(fileName);                          File f =new File(fileName);             fis = new FileInputStream(f);             bis = new BufferedInputStream(fis);                          int len;             int size = 4096;             byte[] data = new byte[size];             while((len = bis.read(data))!=-1){                                  dos.write(data,0,len);             }                          dos.flush();             dos.close();             bis.close();             fis.close();                      }catch(IOException e){             e.printStackTrace();         } catch (Exception e) {             // TODO Auto-generated catch block             e.printStackTrace();         }     } }