帮我用andlua写一个指定目录下的所有txtzip文件上传到服务器

下面是一个使用AndLua在Android设备上将指定目录下的所有txt和zip文件上传到服务器的例子：

local http = require("socket.http")
local ltn12 = require("ltn12")
local lfs = require("lfs")

local uploadUrl = "http://your.server.com/upload.php"
local directoryPath = "/sdcard/your/directory/path/"

function uploadFiles()
  for file in lfs.dir(directoryPath) do
    if file ~= "." and file ~= ".." then
      local filePath = directoryPath .. file
      
      if file:match("%.txt$") or file:match("%.zip$") then
        local fileContents = readFileContents(filePath)
        
        if fileContents then
          local request = createHttpRequest(filePath, fileContents)
          local response = {}
          
          local _, statusCode = http.request{
            url = uploadUrl,
            method = "POST",
            headers = request.headers,
            source = ltn12.source.string(request.body),
            sink = ltn12.sink.table(response)
          }
          
          if statusCode == 200 then
            print("Successfully uploaded file: " .. filePath)
          else
            print("Failed to upload file: " .. filePath)
          end
        end
      end
    end
  end
end

function readFileContents(filePath)
  local file = io.open(filePath, "rb")
  
  if file then
    local contents = file:read("*all")
    file:close()
    return contents
  end
  
  return nil
end

function createHttpRequest(filePath, fileContents)
  local body = "file=" .. fileContents
  local headers = {
    ["Content-Type"] = "application/x-www-form-urlencoded",
    ["Content-Length"] = tostring(#body)
  }
  
  return { body = body, headers = headers }
end

uploadFiles()

请确保在设备上已经安装了AndLua，并将上述代码保存到一个名为upload.lua的文件中。然后在AndLua中执行该脚本，它将在指定的目录下查找所有的txt和zip文件，并将它们上传到指定的服务器URL。

您需要将uploadUrl变量设置为您实际的上传URL，将directoryPath变量设置为您想要上传文件的目录路径。确保您的服务器端有一个处理文件上传的脚本（在上面的例子中为upload.php），可以接收POST请求并将文件内容保存到适当的位置。

请注意，上述代码只是一个初步的示例，您可能需要根据您的实际需求进行调整和改进