dom解析xml_2

<book1>
<person>
<first>Kiran</first>
<last>Pai</last>
<age>22</age>
</person>
<person>
<first>Bill</first>
<last>Gates</last>
<age>46</age>
</person>
<person>
<first>Steve</first>
<last>Jobs</last>
<age>40</age>
</person>
</book1>

 

 

 

import java.io.File;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;

public class ReadAndPrintXMLFile {
  public static void main (String argv []){
      try {

              DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
              DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
              Document doc = docBuilder.parse (new File("book.xml"));

              // normalize text redivsentation           
            
              System.out.println ("Root element of the doc is " + doc.getDocumentElement().getNodeName());

              NodeList listOfPersons = doc.getElementsByTagName("person");
              int totalPersons = listOfPersons.getLength();
              System.out.println("Total no of people : " + totalPersons);

              for(int s=0; s<listOfPersons.getLength() ; s++){

                  Node firstPersonNode = listOfPersons.item(s);
                  if(firstPersonNode.getNodeType() == Node.ELEMENT_NODE){

                      Element firstPersonElement = (Element)firstPersonNode;

                      //-------                   
                      NodeList firstNameList = firstPersonElement.getElementsByTagName("first");
                      Element firstNameElement = (Element)firstNameList.item(0);

                      NodeList textFNList = firstNameElement.getChildNodes();
                      System.out.println("First Name : " +
                             ((Node)textFNList.item(0)).getNodeValue().trim());

                      //-------                   
                    NodeList lastNameList = firstPersonElement.getElementsByTagName("last");
                      Element lastNameElement = (Element)lastNameList.item(0);

                      NodeList textLNList = lastNameElement.getChildNodes();
                      System.out.println("Last Name : " +
                             ((Node)textLNList.item(0)).getNodeValue().trim());

                      //----                   
                      NodeList ageList = firstPersonElement.getElementsByTagName("age");
                      Element ageElement = (Element)ageList.item(0);

                      NodeList textAgeList = ageElement.getChildNodes();
                      System.out.println("Age : " + ((Node)textAgeList.item(0)).getNodeValue().trim());

                      //------

                  }//end of if clause

              }//end of for loop with s var

          }
          catch (SAXParseException err) {
                 System.out.println ("** Parsing error" + ", line "
                                            + err.getLineNumber () + ", uri " + err.getSystemId ());
                 System.out.println(" " + err.getMessage ());

          }
          catch (SAXException e) {
                  Exception x = e.getException ();
                  ((x == null) ? e : x).printStackTrace ();

          }
          catch (Throwable t) {
                  t.printStackTrace ();
          }
          //System.exit (0);
      }//end of main

}