I'm trying to rereplace any words that begin with @ in my string...
我正试图重新放置在我的字符串中以@开头的任何单词...
I've tried a number of variations, but none of them seem to be working...
我尝试了很多变化，但它们似乎都没有工作......
rereplace(getMessages.term, "[\s]?\B@\w+", "", "ALL")
Any suggestions?
有什么建议么？
1 个解决方案
#1
3
CF's built-in regex doesn't support look-behinds, which is what you need to achieve this (since you want to look "behind" (before) the @ and verify what is/isn't there, without including it in your match).
CF的内置正则表达式不支持后视，这是你需要实现这一目标（因为你想看看@之前“（之前）@并验证是什么/不存在，而不是在你的比赛）。
However you can easily dip into Java, to make use of Java's regex support (which does support look-behinds), as simply as this:
但是，您可以轻松地使用Java，以利用Java的正则表达式支持（它支持后视图），就像这样：
<cfset Text = Text.replaceAll('(?<!\w)@\w+','') />
The (?<!\w) part is a negative look-behind saying "make sure there is no \w before this position".
（？<！\ w）部分是一个负面的背后说“确保在这个位置之前没有\ w”。
You might also want to consider using (?<!\S) which will prevent any non-whitespace character, or if you need to match specific characters then use (?<![a-z_\-.,]) or whatever.
您可能还想考虑使用（？<！\ S）来阻止任何非空格字符，或者如果您需要匹配特定字符，则使用（？<！[a-z _ \ - 。，]）或其他。
#1
3
CF's built-in regex doesn't support look-behinds, which is what you need to achieve this (since you want to look "behind" (before) the @ and verify what is/isn't there, without including it in your match).
CF的内置正则表达式不支持后视，这是你需要实现这一目标（因为你想看看@之前“（之前）@并验证是什么/不存在，而不是在你的比赛）。
However you can easily dip into Java, to make use of Java's regex support (which does support look-behinds), as simply as this:
但是，您可以轻松地使用Java，以利用Java的正则表达式支持（它支持后视图），就像这样：
<cfset Text = Text.replaceAll('(?<!\w)@\w+','') />
The (?<!\w) part is a negative look-behind saying "make sure there is no \w before this position".
（？<！\ w）部分是一个负面的背后说“确保在这个位置之前没有\ w”。
You might also want to consider using (?<!\S) which will prevent any non-whitespace character, or if you need to match specific characters then use (?<![a-z_\-.,]) or whatever.
您可能还想考虑使用（？<！\ S）来阻止任何非空格字符，或者如果您需要匹配特定字符，则使用（？<！[a-z _ \ - 。，]）或其他。