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  • FTP上传-封装工具类

    import java.io.File;

    import java.io.FileInputStream;

    import java.io.FileNotFoundException;

    import java.io.FileOutputStream;

    import java.io.IOException;

    import java.io.InputStream;

    import java.io.OutputStream;

    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;

    /**

     * ftp上传下载工具类

     */

    public class FtpUtil {

           /**

            * Description: 向FTP服务器上传文件

            * @param host FTP服务器hostname

            * @param port FTP服务器端口

            * @param username FTP登录账号

            * @param password FTP登录密码

            * @param basePath FTP服务器基础目录

            * @param filePath FTP服务器文件存放路径。例如分日期存放:/2015/01/01。文件的路径为basePath+filePath

            * @param filename 上传到FTP服务器上的文件名

            * @param input 输入流

            * @return 成功返回true,否则返回false

            */ 

           public static boolean uploadFile(String host, int port, String username, String password, String basePath,

                         String filePath, String filename, InputStream input) {

                  boolean result = false;

                  FTPClient ftp = new FTPClient();

                  try {

                         int reply;

                         ftp.connect(host, port);// 连接FTP服务器

                         // 如果采用默认端口,可以使用ftp.connect(host)的方式直接连接FTP服务器

                         ftp.login(username, password);// 登录

                         reply = ftp.getReplyCode();

                         if (!FTPReply.isPositiveCompletion(reply)) {

                                ftp.disconnect();

                                return result;

                         }

                         //切换到上传目录

                         if (!ftp.changeWorkingDirectory(basePath+filePath)) {

                                //如果目录不存在创建目录

                                String[] dirs = filePath.split("/");

                                String tempPath = basePath;

                                for (String dir : dirs) {

                                       if (null == dir || "".equals(dir)) continue;

                                       tempPath += "/" + dir;

                                       if (!ftp.changeWorkingDirectory(tempPath)) {

                                              if (!ftp.makeDirectory(tempPath)) {

                                                     return result;

                                              } else {

                                                     ftp.changeWorkingDirectory(tempPath);

                                              }

                                       }

                                }

                         }

                         //设置上传文件的类型为二进制类型

                         ftp.setFileType(FTP.BINARY_FILE_TYPE);

                         //上传文件

                         if (!ftp.storeFile(filename, input)) {

                                return result;

                         }

                         input.close();

                         ftp.logout();

                         result = true;

                  } catch (IOException e) {

                         e.printStackTrace();

                  } finally {

                         if (ftp.isConnected()) {

                                try {

                                       ftp.disconnect();

                                } catch (IOException ioe) {

                                }

                         }

                  }

                  return result;

           }

          

           /**

            * Description: 从FTP服务器下载文件

            * @param host FTP服务器hostname

            * @param port FTP服务器端口

            * @param username FTP登录账号

            * @param password FTP登录密码

            * @param remotePath FTP服务器上的相对路径

            * @param fileName 要下载的文件名

            * @param localPath 下载后保存到本地的路径

            * @return

            */ 

           public static boolean downloadFile(String host, int port, String username, String password, String remotePath,

                         String fileName, String localPath) {

                  boolean result = false;

                  FTPClient ftp = new FTPClient();

                  try {

                         int reply;

                         ftp.connect(host, port);

                         // 如果采用默认端口,可以使用ftp.connect(host)的方式直接连接FTP服务器

                         ftp.login(username, password);// 登录

                         reply = ftp.getReplyCode();

                         if (!FTPReply.isPositiveCompletion(reply)) {

                                ftp.disconnect();

                                return result;

                         }

                         ftp.changeWorkingDirectory(remotePath);// 转移到FTP服务器目录

                         FTPFile[] fs = ftp.listFiles();

                         for (FTPFile ff : fs) {

                                if (ff.getName().equals(fileName)) {

                                       File localFile = new File(localPath + "/" + ff.getName());

                                       OutputStream is = new FileOutputStream(localFile);

                                       ftp.retrieveFile(ff.getName(), is);

                                       is.close();

                                }

                         }

                         ftp.logout();

                         result = true;

                  } catch (IOException e) {

                         e.printStackTrace();

                  } finally {

                         if (ftp.isConnected()) {

                                try {

                                       ftp.disconnect();

                                } catch (IOException ioe) {

                                }

                         }

                  }

                  return result;

           }

          

           public static void main(String[] args) {

                  try { 

                   FileInputStream in=new FileInputStream(new File("D:\temp\image\gaigeming.jpg")); 

                   boolean flag = uploadFile("192.168.25.133", 21, "ftpuser", "ftpuser", "/home/ftpuser/www/images","/2015/01/21", "gaigeming.jpg", in); 

                   System.out.println(flag); 

               } catch (FileNotFoundException e) { 

                   e.printStackTrace(); 

               } 

           }

    }

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  • 原文地址:https://www.cnblogs.com/zwjcom/p/6061760.html
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