ftp sun jdk自带

package com.italktv.colnv.stat.util;

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 sun.net.ftp.FtpClient;
import sun.net.ftp.FtpProtocolException;

/** * * @author 皮锋 java自带的API对FTP的操作 * */
public class FtpUtil {
    // FTP客户端
    private FtpClient ftpClient;

    /**
     * * 服务器连接 * * @param ip * 服务器IP * @param port * 服务器端口 * @param user * 用户名 * @param
     * password * 密码 * @param path * 服务器路径
     */
    public void connectServer(String ip, int port, String user, String password, String path) {
        try {
            ftpClient = FtpClient.create();
            try {
                SocketAddress addr = new InetSocketAddress(ip, port);
                this.ftpClient.connect(addr);
                this.ftpClient.login(user, password.toCharArray());
                System.out.println("login  success!");
                ftpClient.setBinaryType();
                ftpClient.enablePassiveMode(true);
                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
                    this.ftpClient.changeDirectory(path);
                }
            } catch (FtpProtocolException e) {
                e.printStackTrace();
            }
        } catch (IOException ex) {
            ex.printStackTrace();
            throw new RuntimeException(ex);
        }
    }

    /**
     * 上传文件 *
     *
     * @param localFile
     *            * 本地文件 * @param remoteFile * 远程文件
     */
    public void upload(String localFile, String remoteFile) {
        //this.localFilename  =  localFile;
        //this.remoteFilename  =  remoteFile;
        OutputStream os = null;
        FileInputStream is = null;
        try {
            try {
                //  将远程文件加入输出流中
                os = this.ftpClient.putFileStream(remoteFile);
            } catch (FtpProtocolException e) {
                e.printStackTrace();

            }
            //  获取本地文件的输入流
            File file_in = new File(localFile);
            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");
        } catch (IOException ex) {
            System.out.println("not  upload");
            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();
                }
            }
        }
    }

    /**
     * 文件下载 *
     *
     * @param remoteFile
     *            * 远程文件 * @param localFile * 本地文件
     */
    public void download(String remoteFile, String localFile) {
        InputStream is = null;

        FileOutputStream os = null;
        try {
            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 = this.ftpClient.getFileStream(remoteFile);
            } catch (FtpProtocolException e) {
                e.printStackTrace();
            }
            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();
                }
            }
        }
    }

    /**
     * 关闭连接
     */
    public void closeConnect() {
        try {
            this.ftpClient.close();
            System.out.println("disconnect success");
        } catch (IOException ex) {
            System.out.println("not disconnect");
            ex.printStackTrace();
            throw new RuntimeException(ex);
        }
    }

    public static void main(String agrs[]) {
        FtpUtil fu = new FtpUtil();
        /* * 使用默认的端口号、用户名、密码以及根目录连接FTP服务器 */
        fu.connectServer("upload.dreamstime.com", 21, "369605", "enigma", "/");   

//        String filepath[] = { "AWC1002972G020-1.dwg", "AWC1002974G020-1.cgm" };
//        String localfilepath[] = { "D:\\AWC1002972G020-1.dwg", "D:\\AWC1002974G020-1.cgm" };
//        // 下载
//        for (int i = 0; i < filepath.length; i++) {
//            fu.download(filepath[i], localfilepath[i]);
//        }

        String localfile = "h:\\view.jpg";
        String remotefile = "view.jpg";   // 上传
        SimpleDateFormat sDateFormat = new SimpleDateFormat("yyyy-MM-dd   hh:mm:ss");
        System.out.println(sDateFormat.format(new java.util.Date()));   // new Date()为获取当前系统时间
        fu.upload(localfile, remotefile);
        System.out.println(sDateFormat.format(new java.util.Date()));   // new Date()为获取当前系统时间
        fu.closeConnect();
    }
}