Home > Java > javaTutorial > Can Regular Expressions Effectively Parse HTML in Java?

Can Regular Expressions Effectively Parse HTML in Java?

Susan Sarandon
Release: 2024-11-06 06:04:02
Original
717 people have browsed it

Can Regular Expressions Effectively Parse HTML in Java?

Using Regular Expressions to Parse HTML in Java

Identifying HTML elements such as href and src tags can be achieved through regular expressions, although it's often not recommended. If you're still considering this approach, let's delve into how to accomplish it in Java:

Parsing with Regular Expressions

To find href tags, you can use a regex like:

Pattern p = Pattern.compile("<a.*?href=\"(.*?)\".*?>");
Copy after login

To find src tags:

Pattern p = Pattern.compile("<img.*?src=\"(.*?)\".*?>");
Copy after login

Extracting URLs

Once you have the patterns, you can match them against your HTML string and capture the URL groups:

Matcher m = p.matcher(htmlString);
while (m.find()) {
  String url = m.group(1);
}
Copy after login

Recommendation

However, it's strongly advised to use an HTML parser instead of regular expressions. HTML structure is intricate, and regular expressions can often overlook edge cases. A dedicated HTML parser like JSoup is much more adept at interpreting HTML and reliably extracting the desired elements.

The above is the detailed content of Can Regular Expressions Effectively Parse HTML in Java?. For more information, please follow other related articles on the PHP Chinese website!

source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template