Nginx+Lua 积累1、解析16进制编码的中文参数复制代码local encodeStr = "%E6%B0%94"local decodeStr = "";for i = 2, #encodeStr - 1, 3 do    local num = encodeStr:sub(i, i + 1);    num = tonumber(num, 16);    decodeStr = decodeStr .. string.char(num);endngx.say(decodeStr)复制代码2、类似replacelocal str = "a1b1c1d"local result = string.gsub(str,"1","2")   --将1替换成2local str = "A1B1C1"local result = string.gsub(str,"1","0",2)    --输出的结果为：A0B0C13、直连mysql复制代码local mysql = require "resty.mysql"local db = mysql:new()db:connect{    host = "10.10.3.218",    port = 3306,    database = "test_db",    user = "root",    password = "123456",    max_packet_size = 1024*1024}local result = db:query("SELECT ID,NAME FROM TABLE")ngx.say(result[1]["ID"])ngx.say(result[1]["NAME"])复制代码4、直接Redislocal redis = require "resty.redis"local cache = redis.new()cache.connect(cache,"10.10.3.208", "6379")local result = cache:get("key")5、使用管道复制代码local redis = require "resty.redis"local cache = redis.new()cache.connect(cache,"10.10.3.208", "6379")cache:init_pipeline()for i=1,10 do    cache:get("key")endlocal res = cache:commit_pipeline()for j=1,#res do    ngx.say(res[j])end复制代码6、计算一共有多少页local totalPage = math.floor((totalRow+pageSize-1)/pageSize)