在java中采用漂亮格式的XML的格式属性

// 创建DOM文档
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.newDocument();

// 创建XML元素和节点
Element rootElement = document.createElement("root");
document.appendChild(rootElement);

Element childElement = document.createElement("child");
rootElement.appendChild(childElement);

// 设置格式属性
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
transformer.setOutputProperty(OutputKeys.INDENT, "yes");

// 将DOM文档输出为漂亮格式的XML文件
DOMSource source = new DOMSource(document);
StreamResult result = new StreamResult(new File("output.xml"));
transformer.transform(source, result);

// 创建Java对象
RootObject rootObject = new RootObject();
ChildObject childObject = new ChildObject();
rootObject.setChild(childObject);

// 创建JAXBContext和Marshaller
JAXBContext context = JAXBContext.newInstance(RootObject.class);
Marshaller marshaller = context.createMarshaller();

// 设置格式属性
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);

// 将Java对象输出为漂亮格式的XML文件
marshaller.marshal(rootObject, new File("output.xml"));