一、创建xml文件
<?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 SAXPersonService {
public List<Person> getPersons(InputStream inStream) throws Throwable{
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser parser = factory.newSAXParser();
PersonParser personParser = new PersonParser();
parser.parse(inStream, personParser);
inStream.close();
return personParser.getPersons();
}
/*
* 建一个内部类，继承DefaultHandler，
* 重写DefaultHandler中的方法，作为回调使用
*/
private final class PersonParser extends DefaultHandler{
private List<Person> persons = null;
private String tag = null;
private Person person = null;
public List<Person> getPersons() {
return persons;
}
/*
* 文档开始时调用
* 即遇到<?xml version="1.0" encoding="UTF-8"?>时调用
*/
@Override
public void startDocument() throws SAXException {
persons = new ArrayList<Person>();
}
/*
* 遇到开始标签时调用
*/
@Override
public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
if("person".equals(localName)){
person = new Person();
person.setId(new Integer(attributes.getValue(0)));
}
tag = localName;
}
/*
* 遇到文本时调用
*/
@Override
public void characters(char[] ch, int start, int length)
throws SAXException {
if(tag!=null){
String data = new String(ch, start, length);
if("name".equals(tag)){
person.setName(data);
}else if("age".equals(tag)){
person.setAge(new Short(data));
}
}
}
/*
* 遇到结束标签时调用
*/
@Override
public void endElement(String uri, String localName, String qName)
throws SAXException {
if("person".equals(localName)){
persons.add(person);
person = null;
}
tag = null;
}
}
}