学步园

java读写xml

java写xml：

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

2.java读取xml

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