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POJsoup, extract links, images, from website. Exception on runtime
 

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  1. POJsoup, extract links, images, from website. Exception on runtime
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    <p>I am just starting to play around with Jsoup, so followed the tutorial they had on there website. This code i assume should work fine but when i am running it on netbeans I am coming across errors.</p> <p>This is the code i am using:</p> <p>`</p> <pre><code>/** * * @author Slabs One */ public class ParseWebpage { /** * @param args the command line arguments */ public static void main(String[] args) throws IOException { Validate.isTrue(args.length == 1, "http://www.gumtree.com.au/"); String url = args[0]; print("Fetching %s...", url); Document doc = Jsoup.connect(url).get(); Elements links = doc.select("a[href]"); Elements media = doc.select("[src]"); Elements imports = doc.select("link[href]"); print("\nMedia: (%d)", media.size()); for (Element src : media) { if (src.tagName().equals("img")) print(" * %s: &lt;%s&gt; %sx%s (%s)", src.tagName(), src.attr("abs:src"), src.attr("width"), src.attr("height"), trim(src.attr("alt"), 20)); else print(" * %s: &lt;%s&gt;", src.tagName(), src.attr("abs:src")); } print("\nImports: (%d)", imports.size()); for (Element link : imports) { print(" * %s &lt;%s&gt; (%s)", link.tagName(),link.attr("abs:href"), link.attr("rel")); } print("\nLinks: (%d)", links.size()); for (Element link : links) { print(" * a: &lt;%s&gt; (%s)", link.attr("abs:href"), trim(link.text(), 35)); } } private static void print(String msg, Object... args) { System.out.println(String.format(msg, args)); } private static String trim(String s, int width) { if (s.length() &gt; width) return s.substring(0, width-1) + "."; else return s; } } </code></pre> <p>`</p> <p>There shouldnt be any problems with this code, but on runtime i get this error:</p> <pre><code> Exception in thread "main" java.lang.IllegalArgumentException: http://www.gumtree.com.au/ at org.jsoup.helper.Validate.isTrue(Validate.java:45) at parsewebpage.ParseWebpage.main(ParseWebpage.java:25) </code></pre> <p>Any insight to why this is not working would be greatly appreciated</p>
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    1. UStony romeo
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      1. VTUpMod
    1. COWell, it looks like you aren't running it with any command line arguments, and that `Validate` is making sure you're running it with one command line argument.
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      1. USChris Hayes
    2. COSorry for some reason the full class wasnt coppied over. I have `package parsewebpage; import org.jsoup.Jsoup; import org.jsoup.helper.Validate; import org.jsoup.nodes.Document; import org.jsoup.nodes.Element; import org.jsoup.select.Elements; import java.io.IOException;` At the top of the class, not sure why that didnt get coppied over on the initial post
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      1. UStony romeo
    3. COI am following [link](http://jsoup.org/cookbook/extracting-data/example-list-links)
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      1. UStony romeo
 

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