关于FTPClient上传文件，返回true，但是服务器上没有文件。

package org.zkforge.petshop.util;



import java.io.IOException;

import java.io.InputStream;

import java.net.SocketException;



import org.apache.commons.net.ftp.FTPClient;

import org.apache.commons.net.ftp.FTPReply;



public class FTPUtil {

	private static FTPClient ftpClient = new FTPClient();

	static{

		try {

			ftpClient.connect("192.168.11.207");

			ftpClient.login("myftp", "000");

			ftpClient.setControlEncoding("GBK");

			ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);

			ftpClient.enterLocalPassiveMode();

			int reply;

			reply = ftpClient.getReplyCode();

			if (!FTPReply.isPositiveCompletion(reply)) {

				ftpClient.disconnect();

				System.err.println("FTP server refused connection.");

				System.exit(1);

			}

		} catch (SocketException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		} catch (IOException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		}

	}

	

	/**

	 * Upload file to FTP server and return the boolean result

	 * @param filename

	 * @param is

	 * @param path

	 * @return

	 */

	public static boolean upload(String filename,InputStream is,String path) {

		try {

			ftpClient.changeWorkingDirectory(path);

			ftpClient.storeFile(filename, is);

			

			is.close();

			System.out.println("upload file success...");

			return true;

		} catch (IOException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

			return false;

		} 

	}

	

	/**

	 * Return the instance of <code>FTPClient</code>

	 * @return

	 */

	public static FTPClient getFTPClient(){

		return ftpClient;

	}

	

	/**

	 * close ftp connection

	 */

	public static void closeFTPConnection(){

		try {

			ftpClient.logout();

		} catch (IOException e1) {

			// TODO Auto-generated catch block

			e1.printStackTrace();

		}

		if(ftpClient.isConnected()){

			try {

				ftpClient.disconnect();

			} catch (IOException e) {

				// TODO Auto-generated catch block

				e.printStackTrace();

			}

		}

	}

}