xml增删改查for android

package xmlParser; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.ObjectInputStream.GetField; import java.util.List; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.ParserConfigurationException; import javax.xml.parsers.SAXParser; import javax.xml.parsers.SAXParserFactory; import javax.xml.transform.Transformer; import javax.xml.transform.TransformerConfigurationException; import javax.xml.transform.TransformerException; import javax.xml.transform.TransformerFactory; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamResult; 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; public class WriteXML { private static DocumentBuilderFactory factory; private static DocumentBuilder builder; private static Document document; private static TransformerFactory tff; private static Transformer tf; public static void main(String[] args) throws IOException { initToolClass(); // addColor("888888", "no", "1"); // deleteColor("006600"); // updateColor("660000", "黄色", "0"); List<Color> list = readAllColor(); if (list == null) { sop("list=null"); } else { sop("list!=null"); } for(Color c:list){ sop(c.toString()); } } public static void initToolClass() { try { factory = DocumentBuilderFactory.newInstance(); builder = factory.newDocumentBuilder(); document = builder.parse("src/color.xml"); tff = TransformerFactory.newInstance(); tf = tff.newTransformer(); } catch (TransformerConfigurationException e) { e.printStackTrace(); } catch (SAXException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (ParserConfigurationException e) { e.printStackTrace(); } } public static List<Color> readAllColor() { SAXParserFactory factory = SAXParserFactory.newInstance(); List<Color> list = null; try { SAXParser parser = factory.newSAXParser(); InputStream in = new FileInputStream("src/color.xml"); SAXDefaultHandler handler = new SAXDefaultHandler(); parser.parse(in, handler); list = handler.getColorList(); } catch (ParserConfigurationException | SAXException e) { e.printStackTrace(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return list; } public static Color readColor(String code) { return null; } public static void updateColor(String code, String name, String like) { // 创建根节点 Element root = document.getDocumentElement(); // 获取note NodeList nodes = root.getElementsByTagName("code"); sop(nodes); // 遍历所有的color for (int i = 0; i < nodes.getLength(); i++) { Element element = (Element) nodes.item(i);// 得到一个color Node node = element.getFirstChild(); sop(node.getNodeValue()); if (node.getNodeValue().equals(code)) { sop("进入code修改"); sop(element.getParentNode().getNodeName());// color Element parentElement = (Element) element.getParentNode(); Node nameNode = parentElement.getElementsByTagName("name") .item(0); nameNode.setTextContent(name); Node likeNode = parentElement.getElementsByTagName("like") .item(0); likeNode.setTextContent(like); ; } } try { tf.transform(new DOMSource(document), new StreamResult( new FileOutputStream("src/color.xml"))); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (TransformerException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public static void deleteColor(String code) { // 创建根节点 Element root = document.getDocumentElement(); // 获取note NodeList nodes = root.getElementsByTagName("code"); sop(nodes); // 遍历所有的color for (int i = 0; i < nodes.getLength(); i++) { Element element = (Element) nodes.item(i);// 得到一个color Node node = element.getFirstChild(); if (node.getNodeValue().equals(code)) { sop("进入code删除"); node.getParentNode().getParentNode().getParentNode() .removeChild(node.getParentNode().getParentNode()); } } try { tf.transform(new DOMSource(document), new StreamResult( new FileOutputStream("src/color.xml"))); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (TransformerException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public static void addColor(String code, String name, String like) { // 组装colorElement Element colorElement = document.createElement("color"); Element codeElement = document.createElement("code"); codeElement.setTextContent(code); colorElement.appendChild(codeElement); Element nameElement = document.createElement("name"); nameElement.setTextContent(name); colorElement.appendChild(nameElement); Element likeElement = document.createElement("like"); likeElement.setTextContent(like); colorElement.appendChild(likeElement); Element element = document.getDocumentElement(); element.appendChild(colorElement); try { tf.transform(new DOMSource(document), new StreamResult( new FileOutputStream("src/color.xml"))); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (TransformerException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public static void sop(Object obj) { System.out.println(obj); System.out .println("------------------------------------------------------------------------"); } }