Java中如何使用正则表达式匹配HTML标签内容

Question

What I want to accomplish:

I want to match certain explicit content outside of comments.

An Example:

<div>
    <div>Hello $world$</div>
    <div>Another text <!-- $example$--></div>   
</div>
<div>
    How are $you$?
</div>
<!-- 
<div>
    Lorem ipsum $dolor$ sit
</div>
-->

Words I want to match: $world$ , $you$

Words I don't want to match: $example$ , $dolor$

So far I was only able to match either all or none.

What I can't do:

I can't delete all comments because because it's required to provide the source code I filtered.

Answer 1

I can't tell where you come from with your code, but you need to read your page into a String oder String[] and then run a regular expression over it to extract the Strings you want to filter.

How to use a stream with regex in java:

How do I create a Stream of regex matches?

How to use regex in java:

https://www.tutorialspoint.com/java/java_regular_expressions.htm

Test your regular expression before deploying it:

https://regexr.com/

Answer 2

Add alternation

/(?:<!--.*?-->)|($.*?$)/gsm
               ^

and check if there is anything in the first capturing group.