com.teamdev.jxbrowser.chromium

Interface XPathIterator

public interface XPathIterator

Represents the iterator over the XPath result node set.

表示XPath结果节点集上的迭代器。

Method Summary

Modifier and Type	Method and Description
XPathIteratorItem	getNextItem() Returns next item in the current iterator. 返回当前迭代器中的下一项。

Method Detail

getNextItem

XPathIteratorItem getNextItem()

Returns next item in the current iterator. If document tree is modified during iteration this method returns XPathIteratorItem that represents an error. To check whether iterator is not valid anymore, use XPathIteratorItem.isError() method. For example:

 XPathIterator iterator = result.getIterator();
 XPathIteratorItem item = iterator.getNextItem();
 while (!item.isError()) {
     DOMNode node = item.getNode();
     // No more elements is available in iterator
     if (node == null) {
         break;
     }
     System.out.println("node = " + node.getNodeName());
     item = iterator.getNextItem();
 }
 

返回当前迭代器中的下一项。如果在迭代过程中修改了文档树，则此方法返回表示错误的XPathIteratorItem。要检查迭代器是否不再有效，请使用XPathIteratorItem.isError（）方法。例如： XPathIterator迭代器= result.getIterator（）; XPathIteratorItem item = iterator.getNextItem（）; while（！item.isError（））{ DOMNode节点= item.getNode（）; //迭代器中没有更多元素 if（node == null）{ 打破; } System.out.println（“ node =” + node.getNodeName（））; item = iterator.getNextItem（）; }

Returns:

the next item when result represented as an iterator. 结果表示为迭代器时的下一项。