JAVA解析XML文件的三种解析方法.doc

创建解析XML文件的三种解析方法1、 第一种用w3c解析package w3c;import java.io.File;import java.io.FileOutputStream;import java.util.Random;import javax.xml.parsers.DocumentBuilder;import javax.xml.parsers.DocumentBuilderFactory;import javax.xml.transform.OutputKeys;import javax.xml.transform.Transformer;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.NodeList;public class w3c public static void main(String args) throws ExceptioncreateXml();/创建XML文档并创建节点public static void createXml() throws Exception/获取XML解析器工厂类DocumentBuilderFactory dbf =DocumentBuilderFactory.newInstance();/获取XML解析器DocumentBuilder db = dbf.newDocumentBuilder();/获取操作的document对象Document document = db.newDocument();/设置XML文件的版本document.setXmlVersion(1.0);/创建根节点Element root = document.createElement(students);/将根节点添加到document对象中document.appendChild(root);/声明一个姓名的数组String nameList = 吕布,赵云,马超,张飞,关羽,许褚,孙策,周瑜,夏侯渊,张颌,于禁,黄忠,典韦,曹仁,程普;String sexList = 男,女;/循环添加数据for(int i = 0 ;i 20 ; i+)/创建根元素节点Element rootelement = document.createElement(student);/声明参数IDString id =;/循环生成一个9为的随机ID数for(int j = 0; j 9 ; j + )id += new Random().nextInt(8)+1;/设置根元素节点的属性rootelement.setAttribute(id,id);/将根元素节点添加到根节点中root.appendChild(rootelement);/设置元素节点Element name = document.createElement(name);Element sex = document.createElement(sex);Element age = document.createElement(age);Element phone = document.createElement(phone);/给元素节点赋值name.setTextContent(nameListnew Random().nextInt(nameList.length);sex.setTextContent(sexListnew Random().nextInt(sexList.length);age.setTextContent(new Random().nextInt(20)+20+);String tel =;for(int k = 0; k 7 ; k+ )tel += new Random().nextInt(9);phone.setTextContent(0756-+tel);/将元素节点添加到根元素节点中rootelement.appendChild(name);rootelement.appendChild(sex);rootelement.appendChild(age);rootelement.appendChild(phone);/开始把Document映射到文件TransformerFactory transFactory = TransformerFactory.newInstance();Transformer transFormer = transFactory.newTransformer();/生成的XML文件File file = new File(w3c.xml);/判断XML文件存不存在，如果不存在则创建if(file.exists() file.createNewFile();/设置是否添加空格transFormer.setOutputProperty(OutputKeys.INDENT, yes);/设置输出文件的格式transFormer.setOutputProperty(OutputKeys.ENCODING, utf-8);/输出XML文件transFormer.transform(new DOMSource(document), new StreamResult(new FileOutputStream(file);/输出XML文件的路径System.out.println(file.getAbsolutePath();/解析XML文档public static void resolving() throws Exception/获取XML解析器工厂类DocumentBuilderFactory dbf =DocumentBuilderFactory.newInstance();/获取XML解析器DocumentBuilder db = dbf.newDocumentBuilder();/获取操作的document对象Document document = db.parse(new File(w3c.xml);/获取XML文件的根元素节点NodeList root = document.getElementsByTagName(student);/循环根元素节点信息for(int i = 0 ; i root.getLength() ;i+)Element student = (Element)root.item(i);System.err.println(id = +student.getAttribute(id)+ name = +student.getElementsByTagName(name).item(0).getTextContent()+ sex = +student.getElementsByTagName(sex).item(0).getTextContent()+ age = +student.getElementsByTagName(age).item(0).getTextContent()+ phone = +student.getElementsByTagName(phone).item(0).getTextContent();2、 第二种用jdom解析package jdom;import java.io.FileOutputStream;import java.util.Iterator;import java.util.List;import java.util.Random;import org.jdom.Document;import org.jdom.Element;import org.jdom.input.SAXBuilder;import org.jdom.output.Format;import org.jdom.output.XMLOutputter;public class jdom private static String xmlpath = jdom.xml;public static void main(String args) throws Exception/resolving();createXml();/创建XML文件并添加节点public static void createXml() throws Exception/创建document对象Document document = new Document();/创建根节点Element root = new Element(students);/将根节点添加到document对象中document.addContent(root);for(int i = 0 ;i 20 ; i+)/创建根元素节点Element student = new Element(student);/声明参数IDString id =;/循环生成一个9为的随机ID数for(int j = 0; j 9 ; j + )id += new Random().nextInt(8)+1;/设置跟元素节点的属性student.setAttribute(id,id);/将根元素节点添加到根节点中root.addContent(student);/声明一个姓名的数组String nameList = 吕布,赵云,马超,张飞,关羽,许褚,孙策,周瑜,夏侯渊,张颌,于禁,黄忠,典韦,曹仁,程普;String sexList = 男,女;/创建元素节点Element name = new Element(name);Element sex = new Element(sex);Element age =new Element(age);Element phone = new Element(phone);/设置根元素节点的文本值name.setText(nameListnew Random().nextInt(nameList.length);sex.setText(sexListnew Random().nextInt(sexList.length);age.setText(new Random().nextInt(20)+20+);String tel =;for(int k = 0; k 7 ; k+ )tel += new Random().nextInt(9);phone.setText(0756-+tel);/将元素节点添加到根元素节点中student.addContent(name);student.addContent(sex);student.addContent(age);student.addContent(phone);/设置XML输出排版Format format = Format.getPrettyFormat();XMLOutputter out = new XMLOutputter(format);/输出XML文件out.output(document, new FileOutputStream(xmlpath);/解析XML文档SuppressWarnings(rawtypes)public static void resolving() throws Exception/获取XML解析器SAXBuilder builder = new SAXBuilder();/获取document对象Document doucment = builder.build(xmlpath);/获取根节点Element students = doucment.getRootElement();/获取根元素节点List studentList = students.getChildren(student);/循环获取元素文本值，第一种方法for(int i = 0 ; i studentList.size() ; i+ )Element student = (Element)studentList.get(i);System.out.println(id = +student.getAttributeValue(id)+ name = +student.getChildText(name)+ sex = +student.getChildText(sex)+ age = +student.getChildText(age)+ phone = +student.getChildText(phone);System.err.println(n-);/循环获取元素文本值，第二种方法for(Iterator iter=studentList.iterator();iter.hasNext();)Element student = (Element)iter.next();System.out.println(id = +student.getAttributeValue(id)+ name = +student.getChildText(name)+ sex = +student.getChildText(sex)+ age = +student.getChildText(age)+ phone = +student.getChildText(phone);3、 第三种用dom4j解析package dom4j;import java.io.File;import java.io.FileWriter;import java.util.Iterator;import java.util.List;import java.util.Random;import org.dom4j.Document;import org.dom4j.DocumentHelper;import org.dom4j.Element;import org.dom4j.io.OutputFormat;import org.dom4j.io.SAXReader;import org.dom4j.io.XMLWriter;public class dom4j private static String xmlpath = dom4j.xml;public static void main(String args)throws Exception/createXml();resolving();public static void createXml() throws Exception/创建document对象Document document = DocumentHelper.createDocument();/创建根节点Element root = DocumentHelper.createElement(studnets);/将根节点添加到document对象中document.setRootElement(root);for(int i = 0 ;i 20 ; i+)/创建根元素节点并将根元素节点添加到根节点中Element student = root.addElement(student);/设置根元素节点的值/声明参数IDString id =;/循环生成一个9为的随机ID数for(int j = 0; j 9 ; j + )id += new Random().nextInt(8)+1;student.addAttribute(id,id);/创建元素节点并将元素节点添加到根元素节点中Element name = student.addElement(name);Element sex = student.addElement(sex);Element age = student.addElement(age);Element phone = student.addElement(phone);/声明一个姓名的数组String nameList = 吕布,赵云,马超,张飞,关羽,许褚,孙策,周瑜,夏侯渊,张颌,于禁,黄忠,典韦,曹仁,程普;String sexList = 男,女;/设置元素节点的文本值name.setText(nameListnew Random().nextInt(nameList.length);sex.setText(sexListnew Random().nextInt(sexList.length);age.setText(new Random().nextInt(20)+20+);String tel =;for(int k = 0; k 7 ; k+ )tel += new Random().nextInt(9);phone.setText(0756-+tel);/设置XML文件输出的格式OutputFormat format = new OutputFormat(t, true);format.setEncoding(utf-8);XMLWriter xmlWriter = new XMLWriter(new FileWriter(xmlpath), format);/输出XML文件xmlWriter.write(document);xmlWriter.close();/解析XML文件SuppressWarnings(rawtypes)public static void resolving() throws