演示示例
以下是我们需要修改的输入文本文件 :
Ferrari 101 Ferrari 202 Benteley 1 Benteley 2 Benteley 3
ModifyXmlFileDemo.java
import java.io.File;import java.io.IOException;import java.util.List;import org.jdom2.Attribute;import org.jdom2.Document;import org.jdom2.Element;import org.jdom2.JDOMException;import org.jdom2.input.SAXBuilder;import org.jdom2.output.Format;import org.jdom2.output.XMLOutputter;public class ModifyXMLFileDemo { public static void main(String[] args) { try { File inputFile = new File("input.txt"); SAXBuilder saxBuilder = new SAXBuilder(); Document document = saxBuilder.build(inputFile); Element rootElement = document.getRootElement(); //get first supercar Element supercarElement = rootElement.getChild("supercars"); // update supercar attribute Attribute attribute = supercarElement.getAttribute("company"); attribute.setValue("Lamborigini"); // loop the supercar child node Listlist = supercarElement.getChildren(); for (int temp = 0; temp < list.size(); temp++) { Element carElement = list.get(temp); if("Ferrari 101".equals(carElement.getText())) { carElement.setText("Lamborigini 001"); } if("Ferrari 202".equals(carElement.getText())) { carElement.setText("Lamborigini 002"); } } //get all supercars element List supercarslist = rootElement.getChildren(); for (int temp = 0; temp < supercarslist.size(); temp++) { Element tempElement = supercarslist.get(temp); if("luxurycars".equals(tempElement.getName())) { rootElement.removeContent(tempElement); } } XMLOutputter xmlOutput = new XMLOutputter(); // display xml xmlOutput.setFormat(Format.getPrettyFormat()); xmlOutput.output(document, System.out); } catch (JDOMException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } }}
这会产生以下结果 :
Lamborigini 001 Lamborigini 002