How to do a replace only on parts of string matching my regex pattern?
Question
Lets' say I have this html code in my String variable;
String htmlCode = "<span class='test'>test</span>"+
+"<a href=\"http://foo.com?id=<span class='test'>test</span>\">link</a>";
The htmlCode variable would contain more links similar to that, plus it would also contain more spans similar to that.
I want to replace everything in between tags <span and </span> including those spans, but only if they are in <a href tag. Meaning that I don't want to replace the first span tag, but I want to replace the second one.
I know that regex can do that, but so far I was able to do this:
htmlCode = htmlCode.replaceAll("<span.*?</span>", "");
But how do I define that I want to replace it only if it occurs in the <a> tag? Plus is there a way to replace it including those span tags?
1 answers
solution1
3 ACCPTED 2015-08-03 14:12:39
If I understand your question correctly you want to remove span tags from href value of your a tag.
In that case you can try with something like
String htmlCode = "<span class='test'>test</span>"
+ "<a href=\"http://foo.com?id=<span class='test'>test</span>\">link</a>"
+ "<a href=\"http://foo.com?id=test2\">link</a>";
Document doc = Jsoup.parse(htmlCode);
System.out.println(doc);
for (Element el : doc.select("a[href*=<span]")){//select a with href which contains `<span`
el.attr("href", Jsoup.parse(el.attr("href")).text());//sets new value for `href` attribute which will be
//parsed "http://foo.com?id=<span class='test'>test</span>" and text it represents
}
System.out.println("-----");
System.out.println(doc);
Output (before/after):
<html>
<head></head>
<body>
<span class="test">test</span>
<a href="http://foo.com?id=<span class='test'>test</span>">link</a>
<a href="http://foo.com?id=test2">link</a>
</body>
</html>
-----
<html>
<head></head>
<body>
<span class="test">test</span>
<a href="http://foo.com?id=test">link</a>
<a href="http://foo.com?id=test2">link</a>
</body>
</html>
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