演示示例
这是我们需要修改输入的文本文件：
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<cars>
<supercars company="Ferrari">
<carname type="formula one">Ferrari 101</carname>
<carname type="sports">Ferrari 202</carname>
</supercars>
<luxurycars company="Benteley">
<carname>Benteley 1</carname>
<carname>Benteley 2</carname>
<carname>Benteley 3</carname>
</luxurycars>
</cars>
%uA0
演示示例：
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 List<Element> list = 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<Element> 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() } } }
这将产生以下结果：
<?xml version="1.0" encoding="UTF-8"?>
<cars>
<supercars company="Lamborigini">
<carname type="formula one">Lamborigini 001</carname>
<carname type="sports">Lamborigini 002</carname>
</supercars>
</cars>