请问lua中如何正则匹配固定长度的特征串？

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May 20, 2016, 12:03:52 PM5/20/16

to openresty

比如我想匹配一个32字节的md5字符串，string.match(md5, "[%x]{32}")这样是匹配不到的，lua貌似不支持{}语法。。。

请大神们支招~

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May 20, 2016, 7:11:39 PM5/20/16

to openresty

ngx.re.find
ngx.re.match

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