我试图在接下来的场景中 将雷盖斯写得正确,但遇到了一些麻烦。下面是场景。
我的绳子看起来是这样的:
"办公时间(h) 介于8小时到18小时之间。"
从上面的字符串我需要 "8h" 和 18h" 。
到目前为止,我做了这个 ""[0-9]*"。但是这让我有了 'h" , 8h" 和 18h" 。
外面的专家有什么想法吗?
将 [0-9]**[h] 替换为 [0-9]+h
表示它必须一次或多次出现。 括号 h 中没有任何用处, 因为它单独存在 。
您也可以使用 d+h 来增加可读性( d 匹配任何数字)。
用+(加号)替换 *,即:
[0-9]+[h]
在正方言中说:
* 表示匹配任何前一个标记数( 输入零) 。
+ 表示与前一个标记的任意数相匹配
另外,h周围的方括号是多余的,因为您只匹配一个字符。
表示 Regex 中的零重复或更多重复。 请指定重复的corret number。
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ <\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
d 表示一位数。
d )。
表示词的开始或结束(因为任何字母或数字不应在模式之前或遵循模式)。
它不会找到 "h" 或 "123h" 或 18hertz" 。
您可以使用此正则 :
d+h
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