[xml]java解析xml ,怀旧

package XMLParser;/** * */import java.io.File;import java.util.*;import org.w3c.dom.Document;import org.w3c.dom.NodeList;import org.xml.sax.*;import javax.xml.parsers.*;import org.w3c.dom.Element;import org.w3c.dom.Node;//分析储存在文件中的xml文档public class XMLParseWorker {/** * Variables * */String XMLFileName=null;DocumentBuilderFactory factory=null;DocumentBuilder builder=null;Document document=null;Element element =null;NodeList list=null;Node node=null;int len=0;NodeList childList=null;Node childNode=null;String[] values=null;/** * * Methods * *//** * Main Methods public static void main(String[] args) {String fileName="D://try//web.xml";try{ XMLParseWorker worker=new XMLParseWorker(fileName); worker.printValuesByElementName("display-name"); worker.printValuesByElementName("description"); worker.printValuesByElementName("welcome-file-list"); worker.printValuesByElementName("welcome-file"); worker.printValuesByElementName("web-app");// worker.printStruts(); } catch(Exception eee){eee.printStackTrace();}}* *//** * XMLParseWorker(String XMLFileName) * */public XMLParseWorker(String XMLFileName) {this.XMLFileName=XMLFileName;factory=DocumentBuilderFactory.newInstance();try{builder=factory.newDocumentBuilder();document=builder.parse(XMLFileName);element =document.getDocumentElement();element.normalize();list=element.getChildNodes();len=list.getLength();}catch(Exception xpwe){xpwe.printStackTrace();}} /** * getValuesByElementName(String elementName) * */public String[] getValuesByElementName(String elementName){values=null;try{list=document.getElementsByTagName(elementName);len=list.getLength();values=new String[len];for(int i=0;i<len;i++){node=list.item(i);childList=node.getChildNodes();childNode=childList.item(0);values[i]=childNode.getNodeValue(); }}catch(Exception e){e.printStackTrace();}return values;}/** * printValuesByElementName(String elementName) * */public void printValuesByElementName(String elementName){System.out.println(elementName+"=");System.out.println(Arrays.toString(getValuesByElementName(elementName)));}/** * Print * */public void printStruts(){list=document.getChildNodes();element=document.getDocumentElement();System.out.println("Root element =`"+element);printList(list); }public void printList(NodeList list){for(int i=0;i<list.getLength();i++){Node node=list.item(i);if(node.hasChildNodes()){printList(node.getChildNodes());}else{System.out.println("Element =`"+node.getParentNode().getNodeName()+"`Value ={"+node.getNodeValue());if((node.getNodeValue().trim()).length()>1){System.out.println("}");}}}}}