Java DOM解析器 - 修改XML文檔
演示示例
這是我們需要修改的輸入XML文件：
演示示例：
ModifyXmlFileDemo.java
package com.yiibai.xml; import java.io.File; 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.NamedNodeMap; import org.w3c.dom.Node; import org.w3c.dom.NodeList; public class ModifyXmlFileDemo { public static void main(String argv[]) { try { File inputFile = new File("input.xml"); DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance(); DocumentBuilder docBuilder = docFactory.newDocumentBuilder(); Document doc = docBuilder.parse(inputFile); Node cars = doc.getFirstChild(); Node supercar = doc.getElementsByTagName("supercars").item(0); // update supercar attribute NamedNodeMap attr = supercar.getAttributes(); Node nodeAttr = attr.getNamedItem("company"); nodeAttr.setTextContent("Lamborigini"); // loop the supercar child node NodeList list = supercar.getChildNodes(); for (int temp = 0; temp < list.getLength(); temp++) { Node node = list.item(temp); if (node.getNodeType() == Node.ELEMENT_NODE) { Element eElement = (Element) node; if ("carname".equals(eElement.getNodeName())){ if("Ferrari 101".equals(eElement.getTextContent())){ eElement.setTextContent("Lamborigini 001"); } if("Ferrari 202".equals(eElement.getTextContent())) eElement.setTextContent("Lamborigini 002"); } } } NodeList childNodes = cars.getChildNodes(); for(int count = 0; count < childNodes.getLength(); count++){ Node node = childNodes.item(count); if("luxurycars".equals(node.getNodeName())) cars.removeChild(node); } // write the content on console TransformerFactory transformerFactory = TransformerFactory.newInstance(); Transformer transformer = transformerFactory.newTransformer(); DOMSource source = new DOMSource(doc); System.out.println("-----------Modified File-----------"); StreamResult consoleResult = new StreamResult(System.out); transformer.transform(source, consoleResult); } catch (Exception e) { e.printStackTrace(); } } }
這將產生以下結果：
-----------Modified File-----------