上传文件到FTP服务器用到的工具类

package com.sam.tool;

import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPReply;
import org.jpedal.utils.StringUtils;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

/**
 * FTP工具类
 *
 * @author wl
 */
public class FtpUtils {
   private FTPClient ftpClient = null;
   private String server;
   private int port;
   private String userName;
   private String userPassword;

   public FtpUtils(String server, int port, String userName, String userPassword) {
      this.server = server;
      this.port = port;
      this.userName = userName;
      this.userPassword = userPassword;
   }

   /**
    * 连接服务器
    *
    * @return 连接成功与否 true:成功， false:失败
    */
   public boolean open() {
      if (ftpClient != null && ftpClient.isConnected()) {
         return true;
      }
      try {
         ftpClient = new FTPClient();
         // 连接
         ftpClient.connect(this.server, this.port);
         ftpClient.login(this.userName, this.userPassword);
         setFtpClient(ftpClient);
         // 检测连接是否成功
         int reply = ftpClient.getReplyCode();
         if (!FTPReply.isPositiveCompletion(reply)) {
            this.close();
            System.err.println("FTP server refused connection.");
            System.exit(1);
         }
         System.out.println("open FTP success:" + this.server + ";port:" + this.port + ";name:" + this.userName
               + ";pwd:" + this.userPassword);
         ftpClient.setFileType(FTP.BINARY_FILE_TYPE); // 设置上传模式.binally  or ascii
         return true;
      } catch (Exception ex) {
         this.close();
         ex.printStackTrace();
         return false;
      }
   }

   /**
    * 切换到父目录
    *
    * @return 切换结果 true：成功， false：失败
    */
   private boolean changeToParentDir() {
      try {
         return ftpClient.changeToParentDirectory();
      } catch (IOException e) {
         e.printStackTrace();
         return false;
      }
   }

   /**
    * 改变当前目录到指定目录
    *
    * @param dir 目的目录
    * @return 切换结果 true：成功，false：失败
    */
   private boolean cd(String dir) {
      try {
         return ftpClient.changeWorkingDirectory(dir);
      } catch (IOException e) {
         e.printStackTrace();
         return false;
      }
   }

   /**
    * 获取目录下所有的文件名称
    *
    * @param filePath 指定的目录
    * @return 文件列表, 或者null
    */
   private FTPFile[] getFileList(String filePath) {
      try {
         return ftpClient.listFiles(filePath);
      } catch (IOException e) {
         e.printStackTrace();
         return null;
      }
   }

   /**
    * 层层切换工作目录
    *
    * @param ftpPath 目的目录
    * @return 切换结果
    */
   public boolean changeDir(String ftpPath) {
      if (!ftpClient.isConnected()) {
         return false;
      }
      try {
         // 将路径中的斜杠统一
         char[] chars = ftpPath.toCharArray();
         StringBuffer sbStr = new StringBuffer(256);
         for (int i = 0; i < chars.length; i++) {
            if ('\\' == chars[i]) {
               sbStr.append('/');
            } else {
               sbStr.append(chars[i]);
            }
         }
         ftpPath = sbStr.toString();
         if (ftpPath.indexOf('/') == -1) {
            // 只有一层目录
            ftpClient.changeWorkingDirectory(new String(ftpPath.getBytes(), "iso-8859-1"));
         } else {
            // 多层目录循环创建
            String[] paths = ftpPath.split("/");
            for (int i = 0; i < paths.length; i++) {
               ftpClient.changeWorkingDirectory(new String(paths[i].getBytes(), "iso-8859-1"));
            }
         }
         return true;
      } catch (Exception e) {
         e.printStackTrace();
         return false;
      }
   }

   /**
    * 循环创建目录，并且创建完目录后，设置工作目录为当前创建的目录下
    *
    * @param ftpPath 需要创建的目录
    * @return
    */
   public boolean mkDir(String ftpPath) {
      if (!ftpClient.isConnected()) {
         return false;
      }
      try {
         // 将路径中的斜杠统一
         char[] chars = ftpPath.toCharArray();
         StringBuffer sbStr = new StringBuffer(256);
         for (int i = 0; i < chars.length; i++) {
            if ('\\' == chars[i]) {
               sbStr.append('/');
            } else {
               sbStr.append(chars[i]);
            }
         }
         ftpPath = sbStr.toString();
         System.out.println("ftpPath:" + ftpPath);
         if (ftpPath.indexOf('/') == -1) {
            // 只有一层目录
            ftpClient.makeDirectory(new String(ftpPath.getBytes(), "iso-8859-1"));
            ftpClient.changeWorkingDirectory(new String(ftpPath.getBytes(), "iso-8859-1"));
         } else {
            // 多层目录循环创建
            String[] paths = ftpPath.split("/");
            for (int i = 0; i < paths.length; i++) {
               ftpClient.makeDirectory(new String(paths[i].getBytes(), "iso-8859-1"));
               ftpClient.changeWorkingDirectory(new String(paths[i].getBytes(), "iso-8859-1"));
            }
         }
         return true;
      } catch (Exception e) {
         e.printStackTrace();
         return false;
      }
   }

   /**
    * 上传文件到FTP服务器
    *
    * @param localDirectoryAndFileName 本地文件目录和文件名
    * @param ftpFileName               上传到服务器的文件名
    * @param ftpDirectory              FTP目录如:/path1/pathb2/,如果目录不存在会自动创建目录
    * @return
    */
   public boolean upload(String localDirectoryAndFileName) {
      String ftpFileName = String.valueOf(System.currentTimeMillis());
      if (!ftpClient.isConnected()) {
         return false;
      }
      boolean flag = false;
      if (ftpClient != null) {
         File srcFile = new File(localDirectoryAndFileName);
         ftpFileName = srcFile.getName();
         FileInputStream fis = null;
         try {
            fis = new FileInputStream(srcFile);
            // 创建目录
            ftpClient.setBufferSize(100000);
            ftpClient.setControlEncoding("UTF-8");
            // 设置文件类型（二进制）
            ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
            // 上传
            flag = ftpClient.storeFile(new String(ftpFileName.getBytes(), "iso-8859-1"), fis);
         } catch (Exception e) {
            this.close();
            e.printStackTrace();
            return false;
         } finally {
            try {
               fis.close();
            } catch (IOException e) {
               e.printStackTrace();
            }
         }
      }
      System.out.println("上传文件成功，本地文件名： " + localDirectoryAndFileName );
      return flag;
   }

   /**
    * 从FTP服务器上下载文件
    *
    * @param ftpDirectoryAndFileName   ftp服务器文件路径，以/dir形式开始
    * @param localDirectoryAndFileName 保存到本地的目录
    * @return
    */
   public boolean get(String ftpDirectoryAndFileName, String localDirectoryAndFileName) {
      if (!ftpClient.isConnected()) {
         return false;
      }
      ftpClient.enterLocalPassiveMode(); // Use passive mode as default
      try {
         // 将路径中的斜杠统一
         char[] chars = ftpDirectoryAndFileName.toCharArray();
         StringBuffer sbStr = new StringBuffer(256);
         for (int i = 0; i < chars.length; i++) {
            if ('\\' == chars[i]) {
               sbStr.append('/');
            } else {
               sbStr.append(chars[i]);
            }
         }
         ftpDirectoryAndFileName = sbStr.toString();
         String filePath = ftpDirectoryAndFileName.substring(0, ftpDirectoryAndFileName.lastIndexOf("/"));
         String fileName = ftpDirectoryAndFileName.substring(ftpDirectoryAndFileName.lastIndexOf("/") + 1);
         this.changeDir(filePath);
         ftpClient.retrieveFile(new String(fileName.getBytes(), "iso-8859-1"),
               new FileOutputStream(localDirectoryAndFileName)); // download
         // file
         System.out.println(ftpClient.getReplyString()); // check result
         System.out.println("从ftp服务器上下载文件：" + ftpDirectoryAndFileName + "， 保存到：" + localDirectoryAndFileName);
         return true;
      } catch (IOException e) {
         e.printStackTrace();
         return false;
      }
   }

   /**
    * 返回FTP目录下的文件列表
    *
    * @param pathName
    * @return
    */
   public String[] getFileNameList(String pathName) {
      try {
         return ftpClient.listNames(pathName);
      } catch (IOException e) {
         e.printStackTrace();
         return null;
      }
   }

   /**
    * 删除FTP上的文件
    *
    * @param ftpDirAndFileName 路径开头不能加/，比如应该是test/filename1
    * @return
    */
   public boolean deleteFile(String ftpDirAndFileName) {
      if (!ftpClient.isConnected()) {
         return false;
      }
      try {
         return ftpClient.deleteFile(ftpDirAndFileName);
      } catch (IOException e) {
         e.printStackTrace();
         return false;
      }
   }

   /**
    * 删除FTP目录
    *
    * @param ftpDirectory
    * @return
    */
   public boolean deleteDirectory(String ftpDirectory) {
      if (!ftpClient.isConnected()) {
         return false;
      }
      try {
         return ftpClient.removeDirectory(ftpDirectory);
      } catch (IOException e) {
         e.printStackTrace();
         return false;
      }
   }

   /**
    * 关闭链接
    */
   public void close() {
      try {
         if (ftpClient != null && ftpClient.isConnected()) {
            ftpClient.disconnect();
         }
         System.out.println("成功关闭连接，服务器ip:" + this.server + ", 端口:" + this.port);
      } catch (Exception e) {
         e.printStackTrace();
      }
   }

   public FTPClient getFtpClient() {
      return ftpClient;
   }

   public void setFtpClient(FTPClient ftpClient) {
      this.ftpClient = ftpClient;
   }

   public static void main(String[] args) {
      FtpUtils f = new FtpUtils("192.168.162.100", 21, "uftp", "admin");
      try {
         if (f.open()) {
            //上传
            f.upload("d:/1.txt");

            //遍历
            FTPFile[] list = f.getFileList("test1");
            for (FTPFile file : list) {
               String name = file.getName();
               System.out.println("--" + new String(name.getBytes("iso-8859-1"), "GB2312"));
            }

            //只遍历指定目录下的文件名
            String[] names = f.getFileNameList("test1");
            for (String name : names) {
               System.out.println(new String(name.getBytes("iso-8859-1"), "GB2312"));
            }

            //下载
            boolean b = f.get("/test1/测试2.txt", "d:/text.txt");
            System.out.println(b);

            //删除
            String ftpDirAndFileName = "test1/测试.txt";
            boolean be = f.deleteFile(new String(ftpDirAndFileName.getBytes(), "iso-8859-1"));
            System.out.println(be);

            //删除目录
            boolean delf = f.deleteDirectory("test1");
            System.out.println(delf);

            f.close();
         }
      } catch (Exception e) {
         e.printStackTrace();
      }
   }
}