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POJava regEx URL matching issue
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copied!<p>and as usual thank you in advance.</p> <p>I am trying to familiarize myself with regEx and I am having an issue matching a URL.</p> <p>Here is an example URL:</p> <pre><code>www.examplesite.com/dir/2012/06/19/title-of-some-story/FAQKZjC3veXSalP9zxFgZP/htmlpage.html </code></pre> <p>here is what my regex breakdown looks like:</p> <pre><code>[site]/[dir]*?/[year]/[month]/[day]/[storyTitle]?/[id]/htmlpage.html </code></pre> <p>the <code>[id]</code> is a string 22 characters in length that can be either uppercase or lowercase letters, as well as numbers. However, I do not want to extract that from the URL. Just clarifying</p> <p>Now, I need to extract two values from this url. </p> <p>First, I need to extract the dirs(s). However, the <code>[dir]</code> is optional, but also can be as many as wanted. In other words that parameter could not be there, or it could be <code>dir1/dir2/dir3</code> ..etc . So, going off my first example :</p> <pre><code> www.examplesite.com/dir1/dir2/dir3/2012/06/19/title-of-some-story/FAQKZjC3veXSalP9zxFgZP/htmlpage.html </code></pre> <p>Here I would need to extract <code>dir1/dir2/dir3</code> where a dir is a string that is a single word with all lowercase letters (ie sports/mlb/games). There are no numbers in the dir, only using that as an example.</p> <p>But in this example of a valid URL:</p> <pre><code>www.examplesite.com/2012/06/19/title-of-some-story/FAQKZjC3veXSalP9zxFgZP/htmlpage.html </code></pre> <p>There is no <code>[dir]</code> so I would not extract anything. thus, the <code>[dir]</code> is optional</p> <p>Secondly, I need to extract the <code>[storyTitle]</code> where the <code>[storyTitle]</code> is also optional just like the <code>[dir]</code> above, but however if there is a <code>storyTitle</code> there can only be one.</p> <p>So going off my previous examples</p> <pre><code>www.examplesite.com/dir/2012/06/19/title-of-some-story/FAQKZjC3veXSalP9zxFgZP/htmlpage.html </code></pre> <p>would be valid where I need to extract <code>'title-of-some-story'</code> where story titles are dash separated strings that are always lowercase. The example belowis also valid:</p> <pre><code>www.examplesite.com/dir/2012/06/19/FAQKZjC3veXSalP9zxFgZP/htmlpage.html </code></pre> <p>In the above example, there is no <code>[storyTitle]</code> thus making it optional </p> <p>Lastly, just to be thorough, a URL without a <code>[dir]</code> and without a <code>[storyTitle]</code> are also valid. Example:</p> <pre><code>www.examplesite.com/2012/06/19/FAQKZjC3veXSalP9zxFgZP/htmlpage.html </code></pre> <p>Is a valid URL. Any input would be helpful I hope I am clear.</p>

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