題目：後臺利用dom4j解析student.xml文件，並返回List<student>集合/<student>

需要解析的XML：

<classes>
 <class>
 <student>user1/<student>
 <student>user2/<student>
 <student>user3/<student>
 /<class>
 <class>
 <student>user4/<student>
 <student>user5/<student>
 <student>user6/<student>
 /<class>
 <class>
 <student>user7/<student>
 <student>user8/<student>
 <student>user9/<student>
 /<class>
 <class>
 <student>user10/<student>
 <student>user12/<student>
 <student>user13/<student>
 /<class>
 <class>
 <student>user14/<student>
 <student>user15/<student>
 <student>user16/<student>
 /<class>
/<classes>

java解析xml代碼：

/**
 * @author hh
 */
public class XmlUtil {
 /**
 * 讀取xml學生列表信息
 * @return
 */
 public List<student> listStudent(){
 //創建SAXReader對象
 SAXReader reader=new SAXReader();
 Document document = null;
 try {
 //通過read方法讀取一個文件 轉換成Document對象
 document = reader.read(new File("/Users/mac/Documents/students.xml"));
 } catch (DocumentException e) {
 e.printStackTrace();
 }
 //獲取根節點元素對象
 Element node = document.getRootElement();
 return elementMethod(node);
 }
 /**
 * 獲取節點中的信息
 * @param node
 * @return
 */
 private List<student> elementMethod(Element node){
 List<student> list = new ArrayList<student>();
 //獲取所有class 節點
 List<element> elementClass = node.elements("class");
 for (Element aClass : elementClass) {
 //獲取所有student節點
 List<element> elelmentStu=aClass.elements("student");
 for (Element element : elelmentStu) {
 //創建學生對象
 Student stu = new Student();
 //class節點裡name的值
 stu.setSclazz(aClass.attribute("name").getValue());
 //student節點裡ID的值
 stu.setSid(element.attribute("id").getValue());
 //student節點裡的String值
 stu.setSname(element.getStringValue());
 list.add(stu);
 }
 }
 return list;
 }
}
/<element>/<element>/<student>/<student>/<student>/<student>

實體類：

View Code

@Test 代碼：

View Code

運行結果：