如何创建多级 xml 文件

Question

我无法找到有关在 xml 文件中创建多级标签的信息例如我想要下一个结构

<UserCards>
  <UserCard userCardId="171">
   <userName>somename</userName>
   <userSurname>somesurname</userSurname>
   <userAge>24</userAge>
   <userAdress>someadress</userAdress>
   <userPhone>223334455</userPhone>
     <CurrentBooks>
       <booName>someBookName</bookName>
     </CurrentBooks>
  </UserCard>
</UserCards>

我可以创建一个简单的关卡 xml 但我该如何添加新关卡？

 DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
                DocumentBuilder docBulder = docFactory.newDocumentBuilder();

                //root mainElement
                Document doc = docBulder.newDocument();
                Element rootElement = doc.createElement("UserCards");
                doc.appendChild(rootElement);

                //root Book
                Element UserCard = doc.createElement("UserCard");
                rootElement.appendChild(UserCard);
                ...  
                ...
                //write in a XMLFile
                TransformerFactory transformerFactory = TransformerFactory.newInstance();
                Transformer transformer = transformerFactory.newTransformer();
                DOMSource source = new DOMSource(doc);
                StreamResult result = new StreamResult(new File("Test/UserCards.xml"));

Answer 1

在我看来就像是你自己回答的.... 您可以将元素附加到任何元素，而不仅仅是根。您通过调用 doc.createElement("name") 创建所有元素并附加到您选择的父元素：

Elmenet userName = doc.createElement("userName");
Text userNameText = doc.createTextNode("somename");
userName.appendChild(userNameText);
UserCard.appendChild(userName);

Answer 2

试试这个

            Element rootElement = doc.createElement("UserCards");
            doc.appendChild(rootElement);

            //root Book
            Element UserCard = doc.createElement("UserCard");
            UserCard.setAttribute("userCardId" , "171");
            Element userSurname = doc.createElement("userSurname");
            UserCard.appendChild(userSurname);

            Element userAge = doc.createElement("userAge");
            UserCard.appendChild(userAge);
            Element userAdress = doc.createElement("userAdress");
            UserCard.appendChild(userAdress);
            Element userPhone = doc.createElement("userPhone");
            UserCard.appendChild(userPhone);
            Element CurrentBooks = doc.createElement("CurrentBooks");
            Element booKName = doc.createElement("booKName");
            CurrentBooks.appendChild(booKName);
            UserCard.appendChild(CurrentBooks);
            rootElement.appendChild(UserCard);

如何创建多级 xml 文件

How to create multi level xml file

java

xml

file

document