nginx + lua 生成泛目录的方法

ran.lua

math.randomseed(os.time() + tonumber(tostring({}):sub(8)))



function getRandom(n)

    local t = {

         "0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z",}

local s =  ""

for i = 1, n do

      s = s .. t[math.random(#t)]

end

return s

end



return getRandom(4)





hello.lua



function file_exists(file)

local f = io.open(file, "rb")

if f then f:close() end

return f ~= nil

end



function lines_from(file)

if not file_exists(file) then return {} end

lines = {}

for line in io.lines(file) do

lines[#lines + 1] = line

end

return lines

end





math.randomseed(os.time() + tonumber(tostring({}):sub(8)))



local content = '/usr/local/openresty/nginx/conf/vhost/file/url.txt'

local lines = lines_from(content)

local key = lines[math.random(1,4900)]

return key







nginx.conf



      default_type text/html; 

       charset utf-8;

       set_by_lua_file $hello '/usr/local/openresty/nginx/conf/vhost/lua/hello1.lua';

       echo $hello;