题目：后台利用dom4j解析student.xml文件，并返回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代码：

/**
 * @author hh
 */
public class XmlUtil {
 /**
 * 读取xml学生列表信息
 * @return
 */
 public List<student> listStudent(){
 //创建SAXReader对象
 SAXReader reader=new SAXReader();
 Document document = null;
 try {
 //通过read方法读取一个文件 转换成Document对象
 document = reader.read(new File("/Users/mac/Documents/students.xml"));
 } catch (DocumentException e) {
 e.printStackTrace();
 }
 //获取根节点元素对象
 Element node = document.getRootElement();
 return elementMethod(node);
 }
 /**
 * 获取节点中的信息
 * @param node
 * @return
 */
 private List<student> elementMethod(Element node){
 List<student> list = new ArrayList<student>();
 //获取所有class 节点
 List<element> elementClass = node.elements("class");
 for (Element aClass : elementClass) {
 //获取所有student节点
 List<element> elelmentStu=aClass.elements("student");
 for (Element element : elelmentStu) {
 //创建学生对象
 Student stu = new Student();
 //class节点里name的值
 stu.setSclazz(aClass.attribute("name").getValue());
 //student节点里ID的值
 stu.setSid(element.attribute("id").getValue());
 //student节点里的String值
 stu.setSname(element.getStringValue());
 list.add(stu);
 }
 }
 return list;
 }
}
/<element>/<element>/<student>/<student>/<student>/<student>

实体类：

View Code

@Test 代码：

View Code

运行结果：