Java实现图片上传至服务器功能（FTP协议）

/**
 * ftp 文件操作服务实现类
 * 
 */
@Service
public class FtpFileServiceImpl implements IFtpFileService {

  /**ftp 服务器*/
  @Value("${PTFSERVER}")
  private String server;

  /**Ftp 用户名*/
  @Value("${PTFUSERNAME}")
  private String uname;

  /**ftp 密码*/
  @Value("${PTFPWD}")
  private String pwd;

  /**本地字符集编码*/
  private static final String LOCAL_CHARSET = "GBK";

  /**ftp 服务器字符集编码*/
  private static final String SERVER_CHARSET = "ISO-8859-1";
  /**
   * ftp 文件上传
   */
  @Override
  public void ftpUpload(File srcFile, String fileName, String foldName) {
    FTPClient ftpClient = new FTPClient();
    FileInputStream fis = null;
    String charset = LOCAL_CHARSET;
    try {

      ftpClient.connect(server);
      ftpClient.login(uname, pwd);

      fis = new FileInputStream(srcFile);
      // 设置上传目录
      ftpClient.changeWorkingDirectory(foldName);
      ftpClient.setBufferSize(1024);
      ftpClient.enterLocalPassiveMode();
      if (FTPReply.isPositiveCompletion(ftpClient.sendCommand("OPTS UTF8", "ON"))) {
        // 开启服务器对UTF-8的支持，如果服务器支持就用UTF-8编码，否则就使用本地编码（GBK）.
        charset = "UTF-8";
      }
      ftpClient.setControlEncoding(charset);
      fileName = new String(fileName.getBytes(charset),SERVER_CHARSET);
      // 设置文件类型（二进制）
      ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
      ftpClient.storeFile(fileName, fis);
    } catch (IOException e) {
      throw new EhospitalServiceException(ResponseCode.RESPONSE_COMMON_ERROR_CODE, "FTP客户端出错！", e);
    } finally {
      try {
        ftpClient.disconnect();
      } catch (IOException e) {
        throw new EhospitalServiceException(ResponseCode.RESPONSE_COMMON_ERROR_CODE, "关闭FTP连接发生异常！", e);
      }
    }
  }