package cn.aofeng.demo.xml;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
/**
* XPath语法实践。
*/
public class XPathDemo {
public static void main(String[] args) throws XPathExpressionException {
InputSource ins = new InputSource(XPathDemo.class.getResourceAsStream("/cn/aofeng/demo/xml/BookStore.xml"));
XPathFactory factory = XPathFactory.newInstance();
XPath xpath = factory.newXPath();
NodeList result = (NodeList) xpath.evaluate("//title[@lang='de']", ins, XPathConstants.NODESET);
for (int i = 0; i < result.getLength(); i++) {
Node node = result.item(i);
StringBuilder buffer = new StringBuilder()
.append("NodeName=").append(node.getNodeName()).append(", ")
.append("NodeValue=").append(node.getNodeValue()).append(", ")
.append("Text=").append(node.getTextContent());
System.out.println(buffer.toString());
}
}
}
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