java读写xml

java读写xml

 

java写xml：

import org.w3c.dom.*; import javax.xml.parsers.*; import javax.xml.transform.*; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamResult; import java.io.*; public class writexml { private Document document; private String filename; public writexml(String name) throws ParserConfigurationException { filename = name; DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder = factory.newDocumentBuilder(); document = builder.newDocument(); } public void toWrite(String mytitle, String mycontent) { Element root = document.createElement("WorkShop"); document.appendChild(root); Element title = document.createElement("Title"); title.appendChild(document.createTextNode(mytitle)); root.appendChild(title); Element content = document.createElement("Content"); content.appendChild(document.createTextNode(mycontent)); root.appendChild(content); } public void toSave() { try { TransformerFactory tf = TransformerFactory.newInstance(); Transformer transformer = tf.newTransformer(); DOMSource source = new DOMSource(document); transformer.setOutputProperty(OutputKeys.ENCODING, "GB2312"); transformer.setOutputProperty(OutputKeys.INDENT, "yes"); PrintWriter pw = new PrintWriter(new FileOutputStream(filename)); StreamResult result = new StreamResult(pw); transformer.transform(source, result); } catch (TransformerException mye) { mye.printStackTrace(); } catch (IOException exp) { exp.printStackTrace(); } } public static void main(String args[]) { try { writexml myxml = new writexml("d://9.xml"); myxml.toWrite("中文", "内容"); myxml.toSave(); System.out.print("Your writing is successful."); } catch (ParserConfigurationException exp) { exp.printStackTrace(); System.out.print("Your writing is failed."); } } }

2.java读取xml

import java.io.*; import java.util.Vector; import javax.xml.parsers.*; import org.w3c.dom.*; public class readxml { static Document document; private boolean validating; public readxml() { } public Vector toRead(String filename) { Vector title=new Vector(); Vector content=new Vector(); String myStr=new String(); try { DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); factory.setValidating(validating); DocumentBuilder builder = factory.newDocumentBuilder(); document = builder.parse(new File(filename)); document.getDocumentElement().normalize(); Node node = document.getFirstChild(); NodeList list = node.getChildNodes(); for (int i = 0; i < list.getLength(); i++) { Node nodeitm = list.item(i); if (nodeitm.getNodeName().equals("Title")) { myStr=nodeitm.getFirstChild().getNodeValue(); title.addElement(myStr);//getFirstChild() } if (nodeitm.getNodeName().equals("Content")) { myStr=nodeitm.getFirstChild().getNodeValue(); content.addElement(myStr); } } } catch (Exception exp) { exp.printStackTrace(); return null; } Vector all=new Vector(); all.add(title); all.add(content); return all; } public static void main(String[] args) { Vector A; readxml my = new readxml(); A = my.toRead("d://9.xml"); for (int i = 0; i < A.size(); i++) { System.out.println(A.elementAt(i)); } } }