package com.pcmall; 
 
public class Ftp { 
  private String ipAddr;// ip地址 
  private Integer port;// 端口号 
  private String userName;// 用户名 
  private String pwd;// 密码 
  private String path;// 路径 
 
  public String getIpAddr() { 
    return ipAddr; 
  } 
 
  public void setIpAddr(String ipAddr) { 
    this.ipAddr = ipAddr; 
  } 
 
  public Integer getPort() { 
    return port; 
  } 
 
  public void setPort(Integer port) { 
    this.port = port; 
  } 
 
  public String getUserName() { 
    return userName; 
  } 
 
  public void setUserName(String userName) { 
    this.userName = userName; 
  } 
 
  public String getPwd() { 
    return pwd; 
  } 
 
  public void setPwd(String pwd) { 
    this.pwd = pwd; 
  } 
 
  public String getPath() { 
    return path; 
  } 
 
  public void setPath(String path) { 
    this.path = path; 
  } 
} 

package com.pcmall; 
 
import java.io.File; 
import java.io.FileInputStream; 
import java.io.FileOutputStream; 
import java.io.IOException; 
import java.io.OutputStream; 
 
import org.apache.commons.net.ftp.FTPClient; 
import org.apache.commons.net.ftp.FTPFile; 
import org.apache.commons.net.ftp.FTPReply; 
import org.apache.log4j.Logger; 
 
public class FtpUtil { 
 
  private static Logger logger = Logger.getLogger(FtpUtil.class); 
 
  private static FTPClient ftp; 
 
  /** 
   * 获取ftp连接 
   * 
   * @param f 
   * @return 
   * @throws Exception 
   */ 
  public static boolean connectFtp(Ftp f) throws Exception { 
    ftp = new FTPClient(); 
    boolean flag = false; 
    int reply; 
    if (f.getPort() == null) { 
      ftp.connect(f.getIpAddr(), 21); 
    } else { 
      ftp.connect(f.getIpAddr(), f.getPort()); 
    } 
    ftp.login(f.getUserName(), f.getPwd()); 
    ftp.setFileType(FTPClient.BINARY_FILE_TYPE); 
    reply = ftp.getReplyCode(); 
    if (!FTPReply.isPositiveCompletion(reply)) { 
      ftp.disconnect(); 
      return flag; 
    } 
    ftp.changeWorkingDirectory(f.getPath()); 
    flag = true; 
    return flag; 
  } 
 
  /** 
   * 关闭ftp连接 
   */ 
  public static void closeFtp() { 
    if (ftp != null && ftp.isConnected()) { 
      try { 
        ftp.logout(); 
        ftp.disconnect(); 
      } catch (IOException e) { 
        e.printStackTrace(); 
      } 
    } 
  } 
 
  /** 
   * ftp上传文件 
   * 
   * @param f 
   * @throws Exception 
   */ 
  public static void upload(File f) throws Exception { 
    if (f.isDirectory()) { 
      ftp.makeDirectory(f.getName()); 
      ftp.changeWorkingDirectory(f.getName()); 
      String[] files = f.list(); 
      for (String fstr : files) { 
        File file1 = new File(f.getPath() + "/" + fstr); 
        if (file1.isDirectory()) { 
          upload(file1); 
          ftp.changeToParentDirectory(); 
        } else { 
          File file2 = new File(f.getPath() + "/" + fstr); 
          FileInputStream input = new FileInputStream(file2); 
          ftp.storeFile(file2.getName(), input); 
          input.close(); 
        } 
      } 
    } else { 
      File file2 = new File(f.getPath()); 
      FileInputStream input = new FileInputStream(file2); 
      ftp.storeFile(file2.getName(), input); 
      input.close(); 
    } 
  } 
 
  /** 
   * 下载链接配置 
   * 
   * @param f 
   * @param localBaseDir 
   *      本地目录 
   * @param remoteBaseDir 
   *      远程目录 
   * @throws Exception 
   */ 
  public static void startDown(Ftp f, String localBaseDir, 
      String remoteBaseDir) throws Exception { 
    if (FtpUtil.connectFtp(f)) { 
 
      try { 
        FTPFile[] files = null; 
        boolean changedir = ftp.changeWorkingDirectory(remoteBaseDir); 
        if (changedir) { 
          ftp.setControlEncoding("GBK"); 
          files = ftp.listFiles(); 
          for (int i = 0; i < files.length; i++) { 
            try { 
              downloadFile(files[i], localBaseDir, remoteBaseDir); 
            } catch (Exception e) { 
              logger.error(e); 
              logger.error("<" + files[i].getName() + ">下载失败"); 
            } 
          } 
        } 
      } catch (Exception e) { 
        logger.error(e); 
        logger.error("下载过程中出现异常"); 
      } 
    } else { 
      logger.error("链接失败！"); 
    } 
 
  } 
 
  /** 
   * 
   * 下载FTP文件 当你需要下载FTP文件的时候，调用此方法 根据<b>获取的文件名，本地地址，远程地址</b>进行下载 
   * 
   * @param ftpFile 
   * @param relativeLocalPath 
   * @param relativeRemotePath 
   */ 
  private static void downloadFile(FTPFile ftpFile, String relativeLocalPath, 
      String relativeRemotePath) { 
    if (ftpFile.isFile()) { 
      if (ftpFile.getName().indexOf("?") == -1) { 
        OutputStream outputStream = null; 
        try { 
          File locaFile = new File(relativeLocalPath 
              + ftpFile.getName()); 
          // 判断文件是否存在，存在则返回 
          if (locaFile.exists()) { 
            return; 
          } else { 
            outputStream = new FileOutputStream(relativeLocalPath 
                + ftpFile.getName()); 
            ftp.retrieveFile(ftpFile.getName(), outputStream); 
            outputStream.flush(); 
            outputStream.close(); 
          } 
        } catch (Exception e) { 
          logger.error(e); 
        } finally { 
          try { 
            if (outputStream != null) { 
              outputStream.close(); 
            } 
          } catch (IOException e) { 
            logger.error("输出文件流异常"); 
          } 
        } 
      } 
    } else { 
      String newlocalRelatePath = relativeLocalPath + ftpFile.getName(); 
      String newRemote = new String(relativeRemotePath 
          + ftpFile.getName().toString()); 
      File fl = new File(newlocalRelatePath); 
      if (!fl.exists()) { 
        fl.mkdirs(); 
      } 
      try { 
        newlocalRelatePath = newlocalRelatePath + '/'; 
        newRemote = newRemote + "/"; 
        String currentWorkDir = ftpFile.getName().toString(); 
        boolean changedir = ftp.changeWorkingDirectory(currentWorkDir); 
        if (changedir) { 
          FTPFile[] files = null; 
          files = ftp.listFiles(); 
          for (int i = 0; i < files.length; i++) { 
            downloadFile(files[i], newlocalRelatePath, newRemote); 
          } 
        } 
        if (changedir) { 
          ftp.changeToParentDirectory(); 
        } 
      } catch (Exception e) { 
        logger.error(e); 
      } 
    } 
  } 
 
  public static void main(String[] args) throws Exception { 
    Ftp ftp = new Ftp(); 
    ftp.setIpAddr("192.168.16.128"); 
    ftp.setUserName("test"); 
    ftp.setPwd("123456"); 
    FtpUtil.connectFtp(ftp); 
    File file = new File("E:/edi/edi850/");//如果是路径则将上传该路径下所有文件，如果是文件则上传该文件 
    FtpUtil.upload(file);// 把文件上传在ftp上 
    FtpUtil.startDown(ftp, "E:/FTPTEST/", "/home/test/edi850");// 下载ftp文件测试，第二个参数为客户端下载地址，第三个参数为文件服务器下载路径 
    System.out.println("ok"); 
 
  } 
 
}