ftp 업로드 다운로드 도구 클래스

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPReply;

/**
 * ftp       
 * 
Title: FtpUtil
 * 
Description: 
 * @author	   
 * @date	2018 7 23   5:25:14
 * @version 1.0
 */
public class FtpUtil {

	/** 
	 * Description:  FTP        
	 * @param host FTP   hostname 
	 * @param port FTP      
	 * @param username FTP     
	 * @param password FTP     
	 * @param basePath FTP       
	 * @param filePath FTP         。       ：/2018/01/01。      basePath+filePath
	 * @param filename    FTP         
	 * @param input     
	 * @return     true，    false 
	 */  
	public static boolean uploadFile(String host, int port, String username, String password, String basePath,
			String filePath, String filename, InputStream input) {
		boolean result = false;
		FTPClient ftp = new FTPClient();
		try {
			int reply;
			ftp.connect(host, port);//   FTP   
			//         ，    ftp.connect(host)       FTP   
			ftp.login(username, password);//   
			reply = ftp.getReplyCode();
			if (!FTPReply.isPositiveCompletion(reply)) {
				ftp.disconnect();
				return result;
			}
			//       
			if (!ftp.changeWorkingDirectory(basePath+filePath)) {
				//           
				String[] dirs = filePath.split("/");
				String tempPath = basePath;
				for (String dir : dirs) {
					if (null == dir || "".equals(dir)) continue;
					tempPath += "/" + dir;
					if (!ftp.changeWorkingDirectory(tempPath)) {
						if (!ftp.makeDirectory(tempPath)) {
							return result;
						} else {
							ftp.changeWorkingDirectory(tempPath);
						}
					}
				}
			}
			//               
			ftp.setFileType(FTP.BINARY_FILE_TYPE);
			//    
			if (!ftp.storeFile(filename, input)) {
				return result;
			}
			input.close();
			ftp.logout();
			result = true;
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			if (ftp.isConnected()) {
				try {
					ftp.disconnect();
				} catch (IOException ioe) {
				}
			}
		}
		return result;
	}
	
	/** 
	 * Description:  FTP        
	 * @param host FTP   hostname 
	 * @param port FTP      
	 * @param username FTP     
	 * @param password FTP     
	 * @param remotePath FTP          
	 * @param fileName         
	 * @param localPath             
	 * @return 
	 */  
	public static boolean downloadFile(String host, int port, String username, String password, String remotePath,
			String fileName, String localPath) {
		boolean result = false;
		FTPClient ftp = new FTPClient();
		try {
			int reply;
			ftp.connect(host, port);
			//         ，    ftp.connect(host)       FTP   
			ftp.login(username, password);//   
			reply = ftp.getReplyCode();
			if (!FTPReply.isPositiveCompletion(reply)) {
				ftp.disconnect();
				return result;
			}
			ftp.changeWorkingDirectory(remotePath);//    FTP     
			FTPFile[] fs = ftp.listFiles();
			for (FTPFile ff : fs) {
				if (ff.getName().equals(fileName)) {
					File localFile = new File(localPath + "/" + ff.getName());

					OutputStream is = new FileOutputStream(localFile);
					ftp.retrieveFile(ff.getName(), is);
					is.close();
				}
			}

			ftp.logout();
			result = true;
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			if (ftp.isConnected()) {
				try {
					ftp.disconnect();
				} catch (IOException ioe) {
				}
			}
		}
		return result;
	}
	
	public static void main(String[] args) {
		try {  
	        FileInputStream in=new FileInputStream(new File("G:\\image\\1.jpg"));  
	        boolean flag = uploadFile("123.207.74.170", 21, "ftpuser", "19970921", "/home/ftpuser/www/images","/2015/01/21", "1.jpg", in);  
	        System.out.println(flag);  
	    } catch (FileNotFoundException e) {  
	        e.printStackTrace();  
	    }  
	}
}