java实现ftp上传
谁能帮忙写个java ftp上传的例子，感激不尽

[解决办法]
package com.skylink.callcenter.ftp;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;

import sun.net.TelnetOutputStream;
import sun.net.TelnetInputStream;
import sun.net.ftp.FtpClient;

public class download {
String localfilename;

String remotefilename;

FtpClient ftpClient;

// server：服务器名字
// user：用户名
// password：密码
// path：服务器上的路径
public void connectServer(String ip, int port,String user
, String password,String path) {

try {
ftpClient = new FtpClient();
ftpClient.openServer(ip,port);
ftpClient.login(user, password);
System.out.println( "login success! ");
if (path.length() != 0) ftpClient.cd(path);
ftpClient.binary();
} catch (IOException ex) {
System.out.println( "not login ");
System.out.println(ex);
}
}

public void closeConnect() {
try {
ftpClient.closeServer();
System.out.println( "disconnect success ");
} catch (IOException ex) {
System.out.println( "not disconnect ");
System.out.println(ex);
}
}

public void upload() {

this.localfilename = "D://test2//test.txt ";
this.remotefilename = "test.txt ";

try {
TelnetOutputStream os = ftpClient.put(this.remotefilename);
java.io.File file_in = new java.io.File(this.localfilename);
FileInputStream is = new FileInputStream(file_in);
byte[] bytes = new byte[1024];
int c;
while ((c = is.read(bytes)) != -1) {
os.write(bytes, 0, c);
}
System.out.println( "upload success ");
is.close();
os.close();
} catch (IOException ex) {
System.out.println( "not upload ");
System.out.println(ex);
}
}

public void download() {

try {
TelnetInputStream is = ftpClient.get(this.remotefilename);
java.io.File file_in = new java.io.File(this.localfilename);
FileOutputStream os = new FileOutputStream(file_in);
byte[] bytes = new byte[1024];
int c;
while ((c = is.read(bytes)) != -1) {
// System.out.println((char)is.read());
// System.out.println(file_in);
os.write(bytes, 0, c);
}

System.out.println( "download success ");
os.close();
is.close();
} catch (IOException ex) {
System.out.println( "not download ");
System.out.println(ex);
}
}

public void download(String remotePath,String remoteFile,String localFile) {

try {
if (remotePath.length() != 0) ftpClient.cd(remotePath);
TelnetInputStream is = ftpClient.get(remoteFile);
java.io.File file_in = new java.io.File(localFile);
FileOutputStream os = new FileOutputStream(file_in);
byte[] bytes = new byte[1024];
int c;
while ((c = is.read(bytes)) != -1) {
// System.out.println((char)is.read());
// System.out.println(file_in);
os.write(bytes, 0, c);
}

System.out.println( "download success ");
os.close();
is.close();
} catch (IOException ex) {
System.out.println( "not download ");
System.out.println(ex);
}
}

public void download(String remoteFile,String localFile) {

try {
TelnetInputStream is = ftpClient.get(remoteFile);
java.io.File file_in = new java.io.File(localFile);
FileOutputStream os = new FileOutputStream(file_in);
byte[] bytes = new byte[1024];
int c;
while ((c = is.read(bytes)) != -1) {
// System.out.println((char)is.read());
// System.out.println(file_in);
os.write(bytes, 0, c);
}

System.out.println( "download success ");
os.close();
is.close();
} catch (IOException ex) {
System.out.println( "not download ");
System.out.println(ex);
}
}

public static void main(String agrs[]) {

String filepath[] = { "/callcenter/index.jsp ", "/callcenter/ip.txt ",
"/callcenter/mainframe/image/processing_bar_2.gif ",
"/callcenter/mainframe/image/logo_01.jpg " };
String localfilepath[] = { "C:\\FTP_Test\\index.jsp ",
"C:\\FTP_Test\\ip.txt ", "C:\\FTP_Test\\processing_bar_2.gif ",
"C:\\FTP_Test\\logo_01.jpg " };

download fu = new download();
fu.connectServer( "172.16.1.66 ",22, "web_test ", "123456 ", "/callcenter ");
for(int i=0;i <filepath.length;i++){
fu.download(filepath[i],localfilepath[i]);
}

//fu.upload();
//fu.download();
fu.closeConnect();

}
}


[解决办法]
String ip ip地址, int port 访问端口,String user 用户名, String password 用户密码,String path 路径