jdk1.7实现ftp上传文件

import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.net.InetSocketAddress;import java.net.SocketAddress;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.List;import java.util.StringTokenizer;import sun.net.TelnetInputStream;import sun.net.TelnetOutputStream;import sun.net.ftp.FtpClient;import sun.net.ftp.FtpProtocolException;public class FtpUtil {    private String localfilename;    private String remotefilename;    private FtpClient ftpClient;    public void connectServer(String ip, int port, String user, String password, String path)            throws FtpProtocolException{        try {            ftpClient = FtpClient.create();            try {                SocketAddress addr = new InetSocketAddress(ip, port);                ftpClient.connect(addr);                ftpClient.login(user, password.toCharArray());                System.out.println("login success!");                if (path.length() != 0) {                    // 把远程系统上的目录切换到参数path所指定的目录                    ftpClient.changeDirectory(path);                }            } catch (FtpProtocolException e) {                // TODO Auto-generated catch block                e.printStackTrace();            }        } catch (IOException ex) {            ex.printStackTrace();            throw new RuntimeException(ex);        }    }    public void closeConnect()    {        try        {            ftpClient.close();            System.out.println("disconnect success");        } catch (IOException ex)        {            System.out.println("not disconnect");            ex.printStackTrace();            throw new RuntimeException(ex);        }    }    public boolean upload(String localFile, String remoteFile) throws FtpProtocolException    {        this.localfilename = localFile;        this.remotefilename = remoteFile;        OutputStream os = null;        FileInputStream is = null;        boolean flage = false;        try        {            // 将远程文件加入输出流中            os = (OutputStream) ftpClient.putFileStream(this.remotefilename, true);            // 获取本地文件的输入流            File file_in = new File(this.localfilename);            is = new FileInputStream(file_in);            // 创建一个缓冲区            byte[] bytes = new byte[1024];            int c;            while ((c = is.read(bytes)) != -1)            {                os.write(bytes, 0, c);            }            System.out.println("upload success");            flage = true;            // return true;        } catch (IOException ex)        {            System.out.println("not upload");            ex.printStackTrace();            flage = false;            throw new RuntimeException(ex);        } finally        {            try            {                if (is != null)                {                    is.close();                }            } catch (IOException e)            {                e.printStackTrace();            } finally            {                try                {                    if (os != null)                    {                        os.close();                    }                } catch (IOException e)                {                    e.printStackTrace();                }            }        }        return flage;    }    public void download(String remoteFile, String localFile) throws FtpProtocolException{        TelnetInputStream is = null;        FileOutputStream os = null;        try        {            // 获取远程机器上的文件filename，借助TelnetInputStream把该文件传送到本地。            is = (TelnetInputStream) ftpClient.getFileStream(remoteFile);            File file_in = new File(localFile);            os = new FileOutputStream(file_in);            byte[] bytes = new byte[1024];            int c;            while ((c = is.read(bytes)) != -1)            {                os.write(bytes, 0, c);            }            System.out.println("download success");        } catch (IOException ex){            System.out.println("not download");            ex.printStackTrace();            throw new RuntimeException(ex);        } finally{            try{                if (is != null)                {                    is.close();                }            }catch (IOException e){                e.printStackTrace();            } finally{                try{                    if (os != null)                    {                        os.close();                    }                } catch (IOException e)                {                    e.printStackTrace();                }            }        }    }    public static void main(String agrs[]) {              String filepath[] ={ "/aa.txt", "/regist.log" };              String localfilepath[] ={ "C:\\tmp\\1.txt", "C:\\tmp\\2.log" };              FtpUtil ftp = new FtpUtil();              try              {                  ftp.connectServer(ftp的地址, 端口, 用户名, 密码, 路径);              } catch (FtpProtocolException e)              {                  e.printStackTrace();              }              // 下载              String localfile = "D:/ceshi.jpg";              String remotefile = ftp上传路径"/javaftp测试.jpg";              // 上传              try              {                  ftp.upload(localfile, remotefile);              } catch (FtpProtocolException e)              {                  e.printStackTrace();              }              ftp.closeConnect();          }}