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| XML文档信息DOM |
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import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
public class XMLInfo {
public static void main(String args[]) {
try {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.parse("xmlFileName.xml");
Node root = document.getDocumentElement();
System.out.print("Here is the document's root node:");
System.out.println(" " + root.getNodeName());
System.out.println("Here are its child elements: ");
NodeList childNodes = root.getChildNodes();
Node currentNode;
for (int i = 0; i < childNodes.getLength(); i++) {
currentNode = childNodes.item(i);
System.out.println(currentNode.getNodeName());
}
// get first child of root element
currentNode = root.getFirstChild();
System.out.print("The first child of root node is: ");
System.out.println(currentNode.getNodeName());
// get next sibling of first child
System.out.print("whose next sibling is: ");
currentNode = currentNode.getNextSibling();
System.out.println(currentNode.getNodeName());
// print value of next sibling of first child
System.out.println("value of " + currentNode.getNodeName() + " element is: "
+ currentNode.getFirstChild().getNodeValue());
// print name of parent of next sibling of first child
System.out.print("Parent node of " + currentNode.getNodeName() + " is: "
+ currentNode.getParentNode().getNodeName());
}
// handle exception creating DocumentBuilder
catch (ParserConfigurationException parserError) {
System.err.println("Parser Configuration Error");
parserError.printStackTrace();
}
// handle exception reading data from file
catch (IOException fileException) {
System.err.println("File IO Error");
fileException.printStackTrace();
}
// handle exception parsing XML document
catch (SAXException parseException) {
System.err.println("Error Parsing Document");
parseException.printStackTrace();
}
}
}
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