Jsoup :eq(n) selector
I hava a test.htm page:
<html>
<body>
<div class="partA">
1
</div>
<div class="partB">
2
</div>
<div class="partC">
3
</div>
<d开发者_运维知识库iv class="partB">
4
</div>
<div class="partD">
5
</div>
</body>
</html>
I want get the first div with class="partB".
Document doc=Jsoup.parse( new File("test.htm"), "utf-8" );
Elements select=doc.select( "div.partB:eq(0)" );
System.out.println( select.get( 0 ).html() );
The run exception is:
Exception happens:
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.RangeCheck(ArrayList.java:546)
at java.util.ArrayList.get(ArrayList.java:321)
at org.jsoup.select.Elements.get(Elements.java:501)
at Test.main(Test.java:13)
Instead, I got a size=0 elements. Any helps. Thanks~
The eq(n) selector checks the element's sibling index, i.e. the count from the element's parent. So in your example, your selector is looking for a div with both class 'partB' and that is the first child element of its parent (the body). No such element exists, which is why you get a zero length return.
I suggest you use:
Element div = doc.select("div.partB").first();
Which finds the divs by class and then winnows using the list accessor of Element.
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