一、创建xml
<?xml version="1.0" encoding="UTF-8"?>
<persons>
<person id="23">
<name>liming</name>
<age>30</age>
</person>
<person id="20">
<name>lixiangmei</name>
<age>25</age>
</person>
</persons>
二、创建domain
public class Person {
private Integer id;
private String name;
private Short age;
public Person(){}
public Person(Integer id, String name, Short age) {
this.id = id;
this.name = name;
this.age = age;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Short getAge() {
return age;
}
public void setAge(Short age) {
this.age = age;
}
@Override
public String toString() {
return "Person [age=" + age + ", id=" + id + ", name=" + name + "]";
}
}
三、创建解释类
public class DOMPersonService {
public static List<Person> getPersons(InputStream inStream) throws Throwable{
List<Person> persons = new ArrayList<Person>();
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document documnet = builder.parse(inStream);
Element root = documnet.getDocumentElement();
NodeList personNodes = root.getElementsByTagName("person");//根据节点名称取得node list
for(int i=0 ; i < personNodes.getLength(); i++){
Person person = new Person();
Element personElement = (Element)personNodes.item(i);//Element是从Node继承来的
person.setId(new Integer(personElement.getAttribute("id")));//取得属性
NodeList personChilds = personElement.getChildNodes();
for(int y=0 ; y < personChilds.getLength(); y++){
if(personChilds.item(y).getNodeType()==Node.ELEMENT_NODE){//判断节点类型
Element childElement = (Element)personChilds.item(y);
if("name".equals(childElement.getNodeName())){//取得Node的名字
person.setName(childElement.getFirstChild().getNodeValue());//取得文本节点的值
}else if("age".equals(childElement.getNodeName())){
person.setAge(new Short(childElement.getFirstChild().getNodeValue()));
}
}
}
persons.add(person);
}
return persons;
}
}