dom对xml文件内容的增删改查.doc

dom解析xml文件内容,不说了,直接上代码.package cn.xmk.xml1;import java.io.File;import java.io.FileOutputStream;import javax.xml.parsers.DocumentBuilder;import javax.xml.parsers.DocumentBuilderFactory;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 DomTest2 public static void main(String args) throws Exception DomTest2 dt = new DomTest2();/ dt.create(); /创建/ dt.add(); /增加内容/ dt.modify(); /修改内容dt.remove(); /移除内容/删除xmlprivate void remove() try DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();DocumentBuilder builder = dbFactory.newDocumentBuilder();Document doc = builder.parse(persons.xml);NodeList nlist = doc.getElementsByTagName(person);for (int i = 0; i nlist.getLength(); i+) Element e = (Element) nlist.item(i);String str = e.getElementsByTagName(name).item(0).getTextContent();if (赵六.equals(str.trim() e.getParentNode().removeChild(e);result(doc); catch (Exception e) e.printStackTrace();/修改xml内容private void modify() try DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();DocumentBuilder builder = dbFactory.newDocumentBuilder();Document doc = builder.parse(persons.xml);NodeList nlist = doc.getElementsByTagName(person);for (int i = 0; i nlist.getLength(); i+) Element e = (Element) nlist.item(i);String str = e.getElementsByTagName(name).item(0).getTextContent();if (赵六.equals(str.trim() e.getElementsByTagName(phone).item(0).setTextContent(987654321);result(doc); catch (Exception e) e.printStackTrace();/创建xmlpublic void create() try DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();DocumentBuilder builder = dbFactory.newDocumentBuilder();/ 创建xml对象Document doc = builder.newDocument();Element linkman = doc.createElement(linkman);Element person = doc.createElement(person);Element name = doc.createElement(name);Element phone = doc.createElement(phone);name.setTextContent(赵六);phone.setTextContent(87654321);person.appendChild(name);person.appendChild(phone);linkman.appendChild(person);doc.appendChild(linkman);result(doc); catch (Exception e) e.printStackTrace();/增加一条内容public void add() try DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();DocumentBuilder builder = dbFactory.newDocumentBuilder();Document doc = builder.parse(persons.xml);NodeList nlist = doc.getElementsByTagName(linkman);Element e = (Element) nlist.item(0);Element person = doc.createElement(person);Element name = doc.createElement(name);Element phone = doc.createElement(phone);name.setTextContent(其他);phone.setTextContent(234324324324);person.appendChild(name);person.appendChild(phone);e.appendChild(person);result(doc); catch (Exception e) e.printStackTrace();/ 进行输出public void result(Document doc) try / 开始输出TransformerFactory tFactory = TransformerFactory.newInstance();Transformer former = tFactory.newTransformer();DOMSource domSource = new DOMSource(doc);StreamResult result = new StreamResu