openresty使用lua获取post的请求头

日志格式

log_format  main '{"@timestamp":"$time_iso8601",'
                 '"createtime":"$time_iso8601",'
                 '"host":"$hostname",'
                 '"server_ip":"$server_addr",'
                 '"client_ip":"$remote_addr",'
                 '"xff":"$http_x_forwarded_for",'
                 '"domain":"$host",'
                 '"url":"$uri",'
                 '"referer":"$http_referer",'
                 '"args":"$args",'
                 '"upstreamtime":"$upstream_response_time",'
                 '"responsetime":"$request_time",'
                 '"request_method":"$request_method",'
                 '"status":"$status",'
                 '"size":"$body_bytes_sent",'
                 '"request_length":"$request_length",'
                 '"protocol":"$server_protocol",'
                 '"upstreamhost":"$upstream_addr",'
                 '"file_dir":"$request_filename",'
                 '"request_body":"$request_body",'
                 '"http_user_agent":"$http_user_agent"}';

nginx的配置

location / {
            default_type text/html;
            content_by_lua_file  /usr/local/openresty/nginx/lua/test.lua;
}

vim  /usr/local/openresty/nginx/lua/test.lua

ngx.req.read_body()
local arg = ngx.req.get_post_args()
for k,v in pairs(arg) 
do
     ngx.say("[POST] key:",k,"v:",v)
     ngx.say("<br>")
end

-- 获取body信息
ngx.req.read_body() --解析 body参数之前先获取body
local data = ngx.req.get_body_data()
ngx.say(data)
if data then  
    --使用ngx.log记录数据，注意日志级别      
    ngx.log(ngx.ERR,"Received body data: ", data)  写入error.log
else    
    --如果没有获取到数据，可以记录相关信息  
    ngx.log(ngx.ERR,"No body data received")
end

操作redis

local redis = require "resty.redis"
local red = redis:new()
red:set_timeouts(1000, 1000, 1000) -- 1 sec
//连接redis ip 和端口号
local ok, err = red:connect("192.168.47.128", 6379)
// 没有成功
if not ok then
    ngx.say("not success", err)
    return
end
-- 认证登陆问题
--[[
local count
count,err = red.get_reused_times()
if 0 == count then
    ok,err = red:auth("")
    if not ok then
        ngx.say("failed to auth:",err)
        return
    end
elseif err then
    ngx.say("failed to gt resued times :",err)
    return
end
--]]

//成功开始进行存储cc
ok, err = red:set("cc", "tiantain")
if not ok then
    ngx.say("error", err)
    return
end
//打印成功
ngx.say("set result: ", ok)

//获取cc信息
local res, err = red:get("cc")
if not res then
    ngx.say("success", err)
    return
end

if res == ngx.null then
    ngx.say("not found")
    return
end

ngx.say("成功", res)
local results, err = red:commit_pipeline()
if not results then
    ngx.say("failed to commit the pipelined requests: ", err)
    return
end

for i, res in ipairs(results) do
    if type(res) == "table" then
        if res[1] == false then
            ngx.say("failed to run command ", i, ": ", res[2])
        else
            -- process the table value
        end
    else
        -- process the scalar value
    end
end

-- put it into the connection pool of size 100,
-- with 10 seconds max idle time
local ok, err = red:set_keepalive(10000, 100)
if not ok then
    ngx.say("failed to set keepalive: ", err)
    return
end

-- or just close the connection right away:
local ok, err = red:close()
if not ok then
    ngx.say("failed to close: ", err)
    return
end