脚本专栏 发布日期:2025/11/4 浏览次数:1
ruby ftp封装实例详解
最近自己用ruby 封装了一个Net::FTP的工具类.
class FtpTool def initialize() @current_ftp = create_ftp end
# 获取指定格式的文件名称列表
# 例如: source = "test/*.txt"
# 返回: [source/file_name.txt]
def fetch_remote_filenames(source) return [] if source.blank"source is " + source) filenames = @current_ftp.nlst(source) filenames end
# 获取服务器上确切名称的文件
# 例如: get("test/test.txt")
# 文件将被保存到本地 tmp/test/test.txt
 def get(origin_file)
  local_file = local_file(origin_file)
  local_file.gsub("\\", "\\\\") #此处注意是window下执行, 在linux下需要注意改成/
  log_info("Ftp Get: #{origin_file} -> #{local_file}")
  begin
   @current_ftp.getbinaryfile(origin_file, local_file+".tmp")
  rescue
   delete_local_file(local_file+".tmp")
  end
  rename_local_file(local_file+".tmp", local_file) if File.exist".tmp")
 end
# 上传文件到指定的路径
# 例如: put("tmp\\test\\test.txt", "/test/")
def put(origin_file, remote_path)
  return nil if not File.exist"Ftp put: #{origin_file} -> #{remote_path}")
  begin
   @current_ftp.putbinaryfile(origin_file, remote_path + _file_name + ".tmp")
  rescue
   delete(remote_path + _file_name + ".tmp")
  end
  @current_ftp.chdir(_root)
  rename(remote_path + _file_name + ".tmp", remote_path + _file_name)
 end
 
# 关闭ftp
def close @current_ftp.close if @current_ftp end
# 服务器copy文件
def copy(origin_file, file_path) local_file = local_file(origin_file) _file_name = File.basename(origin_file) begin
#1. 到本地
 log_info("FTP get file to:" + local_file+".tmp")
   @current_ftp.getbinaryfile(origin_file, local_file+".tmp")
   return nil if not File.exist".tmp")
#2. 到服务器
  log_info("FTP put file to :" + file_path + _file_name + ".tmp")
   @current_ftp.putbinaryfile(local_file+".tmp", file_path + _file_name + ".tmp")
   #3. 改名字
   rename(file_path + _file_name + ".tmp", file_path + _file_name)
   #5. 删除本地
   delete_local_file(local_file + ".tmp")
  rescue => e
   log_info(e)
   #4. 删除服务器上临时文件
   delete(file_path + origin_file + ".tmp")
   #5. 删除本地
   delete_local_file(local_file + ".tmp")
  end
 end
# 服务器上移动文件
def move(origin_file, file_path) _file_name = File.basename(origin_file) begin copy(origin_file, file_path) # 删除服务器上源文件 delete(origin_file) rescue => e log_info(e) # 删除临时文件,如果存在 delete(file_path + _file_name + ".tmp") # 删除服务器上目标文件, 如果存在 delete(file_path + _file_name) end end
# 重命名服务器文件
 def rename(origin_file, file)
  if not @current_ftp.list(origin_file).blank"FTP rename #{origin_file} to #{file}")
   @current_ftp.rename(origin_file, file)
  end
 end
 
# 删除服务器上的文件
 def delete(origin_file)
  if not @current_ftp.list(origin_file).blank"FTP delete #{origin_file}")
   @current_ftp.delete(origin_file)
  end
 end
 
# ftp 是否关闭
def closed"htmlcode">def convert(src_file, dest_file, from_encode, to_encode ) log_info("Convert #{src_file} to #{dest_file}") cd = Iconv.new(to_encode, from_encode) File.open(dest_file, "w") do |out| File.open(src_file) do |in_stream| in_stream.each_line do |line| begin new_line = cd.iconv(line) out.write(new_line) rescue => e log_info "convert line error : #{line}" next end end end end cd.close dest_file end end protected#生成ftp
def create_ftp require "net/ftp" ftp = Net::FTP.new ftp.connect(ftp_host, ftp_port) ftp.login(ftp_user, ftp_pwd) ftp.passive = ftp_mode ftp end#本地路径
def local_file(file) local = File.join("tmp/", file) FileUtils.makedirs(File.dirname(local)) local end# 删除本地文件
def delete_local_file(file) if File.exist"delete local file : " + file) File.delete(file) end end# 重命名本地文件
def rename_local_file(origin_file, file) if File.exist"rename local file : " + origin_file + " to " + file) File.rename(origin_file, file) end end#初始化参数
def ftp_host; "x.x.x.x" end def ftp_port; "21" end def ftp_user; "x" end def ftp_pwd ; "x" end def ftp_mode; true end end