分类: Java
2008-03-23 15:52:06
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); |
DocumentBuilder db = dbf.newDocumentBuilder(); |
Document doc = db.parse("c:/xml/message.xml"); |
NodeList nl = doc.getElementsByTagName("message"); |
Node my_node = nl.item(0); |
String message = my_node.getFirstChild().getNodeValue(); |
1.基本的DOM对象 |
2.DOM实例 |
import javax.xml.parsers.*; import org.w3c.dom.*; |
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder=factory.newDocumentBuilder(); Document doc=builder.parse("links.xml"); doc.normalize(); |
NodeList links =doc.getElementsByTagName("link"); |
for (int i=0;i System.out.print("Content: "); System.out.println(link.getElementsByTagName("text").item(0).getFirstChild().getNodeValue()); System.out.print("URL: "); System.out.println(link.getElementsByTagName("url").item(0).getFirstChild().getNodeValue()); System.out.print("Author: "); System.out.println(link.getElementsByTagName("author").item(0).getFirstChild().getNodeValue()); System.out.print("Date: "); Element linkdate=(Element) link.getElementsByTagName("date").item(0); String day=linkdate.getElementsByTagName("day").item(0).getFirstChild().getNodeValue(); String month=linkdate.getElementsByTagName("month").item(0).getFirstChild().getNodeValue(); String year=linkdate.getElementsByTagName("year").item(0).getFirstChild().getNodeValue(); System.out.println(day+"-"+month+"-"+year); System.out.print("Description: "); System.out.println(link.getElementsByTagName("description").item(0).getFirstChild().getNodeValue()); System.out.println(); } |
import javax.xml.parsers.*; import javax.xml.transform.*; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamResult; import org.w3c.dom.*; |
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder=factory.newDocumentBuilder(); Document doc=builder.parse("links.xml"); doc.normalize(); //---取得变量---- String text="Hanzhong's Homepage"; String url=""; String author="Hzliu Liu"; String discription="A site from Hanzhong Liu, give u lots of suprise!!!"; |
Text textseg; Element link=doc.createElement("link"); |
Element linktext=doc.createElement("text"); textseg=doc.createTextNode(text); linktext.appendChild(textseg); link.appendChild(linktext); Element linkurl=doc.createElement("url"); textseg=doc.createTextNode(url); linkurl.appendChild(textseg); link.appendChild(linkurl); Element linkauthor=doc.createElement("author"); textseg=doc.createTextNode(author); linkauthor.appendChild(textseg); link.appendChild(linkauthor); java.util.Calendar rightNow = java.util.Calendar.getInstance(); String day=Integer.toString(rightNow.get(java.util.Calendar.DAY_OF_MONTH)); String month=Integer.toString(rightNow.get(java.util.Calendar.MONTH)); String year=Integer.toString(rightNow.get(java.util.Calendar.YEAR)); Element linkdate=doc.createElement("date"); Element linkdateday=doc.createElement("day"); textseg=doc.createTextNode(day); linkdateday.appendChild(textseg); Element linkdatemonth=doc.createElement("month"); textseg=doc.createTextNode(month); linkdatemonth.appendChild(textseg); Element linkdateyear=doc.createElement("year"); textseg=doc.createTextNode(year); linkdateyear.appendChild(textseg); linkdate.appendChild(linkdateday); linkdate.appendChild(linkdatemonth); linkdate.appendChild(linkdateyear); link.appendChild(linkdate); Element linkdiscription=doc.createElement("description"); textseg=doc.createTextNode(discription); linkdiscription.appendChild(textseg); link.appendChild(linkdiscription); |
doc.getDocumentElement().appendChild(link); |
TransformerFactory tFactory =TransformerFactory.newInstance(); Transformer transformer = tFactory.newTransformer(); DOMSource source = new DOMSource(doc); StreamResult result = new StreamResult(new java.io.File("links.xml")); transformer.transform(source, result); |