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PORegular Expressions to match an <a> tag
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  1. PORegular Expressions to match an <a> tag
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    copied!<p>I am writing a small java program for a class, and I can't quite figure out why my regex isn't working properly. In the special case of having 2 tags on the same line that is read in, it only matches the second one.</p> <p>Here is a link that has the regex included, along with a simple set of test data: <a href="http://regexpal.com/?flags=&amp;regex=%5CB%3Ca.%2ahref=%28?%3a%27%7C%22%29%28http://%28?%3a%5BA-Za-z0-9%5C.%5D%2b%29%28?%3a%5BA-Za-z0-9/%5D%2b%5C.%28?%3ahtml%7Chtm%29%29?%29%28?%3a%27%7C%22%29%5B%5E%3E%5D%2a%3E%5Ba-zA-Z0-9%5D%2b%3C/a%3E%5CB&amp;input=%3Chtml%3E%0A%3Chead%3E%0A%3C/head%3E%0A%3Cbody%3E%0A%3Ca%20href=%22http://www.google.com%22%3EGoogle%3C/a%3E%0A%3Ca%20href=%22http://www.google.com/index.html%22%3EGoogle%3C/a%3E%3Ca%20href=%22http://www.google.com/index.htm%22%3EGoogle%3C/a%3E%0A%3Ca%20href=%22http://www.google.com/index.php%22%3EGoogle%3C/a%3E%0A%3Ca%20href=%22http://google.com%22%3EGoogle%3C/a%3E%0A%3Ca%20href=%22http://google.com/index.html%22%3EGoogle%3C/a%3E%0A%3Ca%20href=%22http://google.com/index.htm%22%3EGoogle%3C/a%3E%0A%3Ca%20href=%22http://google.com/index.php%22%3EGoogle%3C/a%3E%0A%3C/body%3E%0A%3C/html%3E" rel="nofollow">Regex Test Link</a>.</p> <p>In my java program I have the following code:</p> <pre><code>Pattern p = Pattern.compile(regex, Pattern.CASE_INSENSITIVE); String[] results; System.out.println(p.toString()); Matcher m = null; while((line = input.readLine()) != null) { m = p.matcher(line); while(m.find()) { System.out.println("Matches: " + m.group(1)); } } </code></pre> <p>The goal is to extract the href value, as long as it starts with http://, the website ends in either no page (like <a href="http://www.google.com" rel="nofollow">http://www.google.com</a>) or ends in index.htm or index.html (like <a href="http://www.google.com/index.html" rel="nofollow">http://www.google.com/index.html</a>).</p> <p>My regex works for every case of the above, but doesnt match in the special case of 2 tags that are on the same line.</p> <p>Any help is appreciated.</p>
 

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