我完全没有关于regex的经验, 所以如果这是一个简单的问题, 我道歉, 但我找不到任何答案 。 我试图匹配窗体 < code> [ 某些数字][ 某些字母] 的字符串, 如 < code> 123 Apples , 但是当它们被 < code > about (例如, < code> about 10 apples 不应该匹配) 之前, 我不想匹配它们 。
我尝试了使用 (? & lt;! about (d[,.d] *) ([a- zA- Z]+) ,但显然不起作用,因为它只是将匹配点移动在某种程度上(例如 约12个苹果 匹配为 2 apples )。我该怎么做才能解决这个问题?
我以前有过这样的问题,试试这个:
(?<!about )(d[,.d]*) ([a-zA-Z]+)
符合零字符字边界( 空格后为字母数字或反数) 。 它会拒绝将“ 123 苹果” 匹配为“ 23 苹果 ”, 因为“ 2” 之前没有单词边界 。
您非常接近 : (? <! about d* (d, d*) . 添加 d/code> 到您的负面外观 。
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