Ftp文件上传

[1].[代码] ftp上传和删除 跳至 [1] [2] [3]

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package com.itv.launcher.util;   import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.net.InetSocketAddress; import java.util.Properties; import java.util.StringTokenizer;   import sun.net.TelnetOutputStream; import sun.net.ftp.FtpClient; import sun.net.ftp.FtpProtocolException;   /**   * FTP上传工具类   *   * @author yanzhou   * @version v1.0   */ public class FTPUtil {        private static FtpClient ftpClient = null ;      private static final String url;      private static final int port;      private static final String user;      private static final String password;      private static final String remoteFilePath;        static {          Properties FTPPro = ReadFTPProperties.getMsgFromPro();          url = FTPPro.getProperty( "FTP_URL" );          port = Integer.parseInt(FTPPro.getProperty( "FTP_PORT" ));          user = FTPPro.getProperty( "FTP_USER" );          password = FTPPro.getProperty( "FTP_PASSWORD" );          remoteFilePath = FTPPro.getProperty( "FTP_REMOTE_FILEPATH" );        }        /**       * 链接FTP       * @throws FtpProtocolException       */      private static void connectFTP() throws FtpProtocolException {          try {              ftpClient = FtpClient.create();              ftpClient.connect( new InetSocketAddress(url, port));              ftpClient.login(user, password.toCharArray());              ftpClient.setBinaryType();              if (! "" .equals(remoteFilePath) && remoteFilePath != null ) {                  ftpClient.changeDirectory(remoteFilePath);              }          } catch (IOException e) {              e.printStackTrace();          }      }        /**       * 关闭FTP链接       */      public static void closeFTP() {          try {              if (ftpClient != null ) {                  ftpClient.close();              }          } catch (IOException e) {              e.printStackTrace();          }      }        /**       * 上传文件到FTP       * @param file file文件，struts2从页面得到的File类型       * @param filePath 要保存在FTP上的路径（文件夹）       * @param fileName 文件名（test001.jpg）       * @return 文件是否上传成功       * @throws Exception       */      public static boolean upload(File file, String filePath, String fileName) {          TelnetOutputStream to = null ;          FileInputStream fi = null ;          filePath = remoteFilePath + Constants.FILE_SEPARATOR + filePath;          try {              if (file != null ) {                  connectFTP();                  if (!isDirExist(filePath.replace( "\\" , "/" ))) {                      createDir(filePath.replace( "\\" , "/" ));                      ftpClient.changeDirectory(filePath.replace( "\\" , "/" ));                  }                  fi = new FileInputStream(file);                  to = (TelnetOutputStream) ftpClient.putFileStream(fileName, true );                  byte [] bytes = new byte [ 1024 ];                  int i = fi.read(bytes);                  while (i != - 1 ) {                      to.write(bytes);                      i = fi.read(bytes);                  }              }              return true ;          } catch (FileNotFoundException e1) {              return false ;          } catch (IOException e2) {              return false ;          } catch (Exception e) {              return false ;          } finally {              if (fi != null ) {                  try {                      fi.close();                  } catch (IOException e) {                      e.printStackTrace();                  }              }              if (to != null ) {                  try {                      to.flush();                      to.close();                  } catch (IOException e) {                      e.printStackTrace();                  }              }              closeFTP();          }      }        /**       * 删除FTP制定目录下的文件       * @param filePath 文件在FTP存储的路径       * @param fileName 要删除的文件名称       * @return 是否删除成功       */      public static boolean deleteFileFtp(String filePath, String fileName){           try {              connectFTP();              filePath = remoteFilePath + Constants.FILE_SEPARATOR + filePath + Constants.FILE_SEPARATOR;              if (!isDirExist(filePath.replace( "\\" , "/" ))) {                  return false ;              }              ftpClient.changeDirectory(filePath.replace( "\\" , "/" ));              ftpClient.deleteFile(fileName);              return true ;          } catch (Exception e) {              e.printStackTrace();              return false ;          } finally {              closeFTP();          }      }      /**       * 检查文件夹是否存在       *       * @param dir       * @param ftpClient       * @return       */      private static Boolean isDirExist(String dir) {          try {              ftpClient.changeDirectory(dir);          } catch (Exception e) {              return false ;          }          return true ;      }        /**       * 创建文件夹       *       * @param dir       * @param ftpClient       * @throws Exception       */      private static void createDir(String dir) throws Exception {          ftpClient.setAsciiType();          StringTokenizer s = new StringTokenizer(dir, "/" ); // sign          s.countTokens();          String pathName = "" ;          while (s.hasMoreElements()) {              pathName = pathName + "/" + (String) s.nextElement();              try {                  ftpClient.makeDirectory(pathName);              } catch (Exception e) {                  e = null ;              }          }          ftpClient.setBinaryType();        }   }

 

[2].[代码] 常量类，系统的路径分隔符 跳至 [1] [2] [3]

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package com.itv.launcher.util;   public interface Constants {            //路径分隔符      public static String FILE_SEPARATOR = System.getProperty( "file.separator" ); }

 

[3].[代码] FTP链接的配置properties文件，包括用户名密码一些信息 跳至 [1] [2] [3]

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#FTP的IP地址 FTP_URL= 127.0 . 0.1 #FTP端口号 FTP_PORT= 1234 #用户名 FTP_USER=yanzhou #密码 FTP_PASSWORD=abcdefg12345 #FTP账号目录 FTP_REMOTE_FILEPATH=