急急急急急急，重复请求的问题，盼回复

这是bodyfilter中的代码片段：(css会重复请求，一样的内容大小竟然差一半。。。 header设置也无效，求大神解答)

header_filter_by_lua_block {

ngx.header.content_length = nil

ngx.header["server"] = ngx.var.server_display_name

ngx.header["Server"] = ngx.var.server_display_name

}

body_filter_by_lua_block{

if ngx.arg[1] ~= '' then

ngx.var.proxy_buffer_body = ngx.var.proxy_buffer_body..ngx.arg[1]

end

if ngx.arg[2] then

if ngx.var.needcacheuri=="1" then

local body = ngx.var.proxy_buffer_body

doreplace(body)

encodeurl = ngx.var.encodeuri

local ismatch = ngx.re.match(ngx.var.request_uri, ngx.var.shuffixfilter, "i")

if not ismatch and (ngx.status==200 or ngx.status==304) then

writefile(ngx.var.cachepathuri, "\n")

writefile(ngx.var.cachepathuri, "\n")

writefile(ngx.var.cachepathuri, ngx.arg[1])

end

else

local cache = readfile(ngx.var.cachepathuri)

ngx.arg[1] = cache

end

return

else

ngx.arg[1] = nil

end

}