lua字符串与十六进制数据转换

function fromHex(hex)
    --滤掉分隔符
    local hex = hex:gsub("[%s%p]", ""):upper()
    return hex:gsub("%x%x", function(c)
        return string.char(tonumber(c, 16))
    end)
end

function toValue(str)
    return fromHex(str:gsub("%x", "0%1"))
end

local s="123456ef"
local hexs=toValue(s)
for i=1,8 do
    print(i, "ascii: ", s:byte(i), ", hex: ", hexs:byte(i))
end

[01:09:36] 虚拟机初始化完毕
[01:09:36] 1  ascii:  49  , hex:  1
[01:09:36] 2  ascii:  50  , hex:  2
[01:09:36] 3  ascii:  51  , hex:  3
[01:09:36] 4  ascii:  52  , hex:  4
[01:09:36] 5  ascii:  53  , hex:  5
[01:09:36] 6  ascii:  54  , hex:  6
[01:09:36] 7  ascii:  101 , hex:  14
[01:09:36] 8  ascii:  102 , hex:  15
[01:09:36] 虚拟机已停止运行