简单SAX封闭（解析自定义XML"）

<?xml version="1.0" encoding="utf-8"?><classify><image>123</image><image>456</image></classify>

package com.yzsd.demo;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.InputStream;public class Main {/** * @param args */public static void main(String[] args) {try {InputStream in = new FileInputStream(new File("1.xml"));/* * root节点是第一个节点不包含任何数据 root节点的第一个子节点是xml的第一个标签 */TreeNode root = ParseXml.parseXml(in);root = root.getChildren().get(0);for (int i = 0; i < root.getChildren().size(); i++) {System.out.println(root.getChildren().get(i).getValue());}} catch (FileNotFoundException e) {e.printStackTrace();}}public static void readTree(TreeNode treeNode) {System.out.println(treeNode.getAttributes());for (int i = 0; i < treeNode.getChildren().size(); i++) {readTree(treeNode.getChildren().get(i));}}}

package com.yzsd.demo;import java.io.InputStream;import javax.xml.parsers.ParserConfigurationException;import javax.xml.parsers.SAXParser;import javax.xml.parsers.SAXParserFactory;import org.xml.sax.SAXException;public class ParseXml {private static SAXParser saxParser;static {SAXParserFactory sParserFactory = SAXParserFactory.newInstance();try {saxParser = sParserFactory.newSAXParser();} catch (ParserConfigurationException e) {e.printStackTrace();} catch (SAXException e) {e.printStackTrace();}}public static TreeNode parseXml(InputStream inputStream) {UserHandler userHandler = new UserHandler();try {saxParser.parse(inputStream, userHandler);} catch (Exception e) {e.printStackTrace();}return userHandler.getRootNode();}}

package com.yzsd.demo;import java.util.Stack;import org.xml.sax.Attributes;import org.xml.sax.SAXException;import org.xml.sax.helpers.DefaultHandler;public class UserHandler extends DefaultHandler {private Stack<TreeNode> mStack;private TreeNode rootNode;@Overridepublic void startDocument() throws SAXException {mStack = new Stack<TreeNode>();rootNode = new TreeNode();mStack.push(rootNode);super.startDocument();}@Overridepublic void endDocument() throws SAXException {super.endDocument();}@Overridepublic void startElement(String uri, String localName, String qName,Attributes attributes) throws SAXException {TreeNode treeNode = new TreeNode();treeNode.setTagName(qName);treeNode.setAttributes(attributes);if (!mStack.isEmpty()) {mStack.peek().addChild(treeNode);}mStack.push(treeNode);super.startElement(uri, localName, qName, attributes);}@Overridepublic void endElement(String uri, String localName, String qName)throws SAXException {mStack.pop();super.endElement(uri, localName, qName);}@Overridepublic void characters(char[] arg0, int arg1, int arg2) throws SAXException {mStack.peek().setValue(new String(arg0, arg1, arg2));super.characters(arg0, arg1, arg2);}public TreeNode getRootNode() {return rootNode;}}

package com.yzsd.demo;import java.util.ArrayList;import java.util.List;import org.xml.sax.Attributes;public class TreeNode {private String tagName;private String Value;private List<TreeNode> children;private Attributes attributes;public TreeNode() {children = new ArrayList<TreeNode>();}public String getTagName() {return tagName;}public void setTagName(String tagName) {this.tagName = tagName;}public String getValue() {return Value;}public void setValue(String value) {Value = value;}public List<TreeNode> getChildren() {return children;}public void addChild(TreeNode treeNode) {this.children.add(treeNode);}public Attributes getAttributes() {return attributes;}public void setAttributes(Attributes attributes) {this.attributes = attributes;}}

结果：123
    456