解析如下xml文件
<?xml version="1.0" encoding="UTF-8"?>
<persons>
<person id="1">
<name>GIS</name>
<age>23</age>
</person>
<person id="2">
<name>ArcGIS</name>
<age>24</age>
</person>
</persons>
xml
创建一个person对象
public class Person {
private Integer id;
private String name;
private Short age;
public Person(){}
public Person(Integer id, String name, Short age) {
super();
this.id = id;
this.name = name;
this.age = age;
}
@Override
public String toString() {
return "Person [id=" + id + ", name=" + name + ", 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;
}
}
Person
1.dom解析
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List; import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory; import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* DOM解析XML
* @author GIS
*
*/
public class DOMService {
public List<Person> getHongXml(InputStream inStream) throws Throwable {
List<Person> persons = new ArrayList<Person>();
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.parse(inStream);//结束后以文档树的方式存放在内存
Element root = document.getDocumentElement();
NodeList persoNodes = root.getElementsByTagName("person");
for (int i = 0; i < persoNodes.getLength(); i++) {
Person person = new Person();
Element personElement = (Element)persoNodes.item(i);
person.setId(new Integer(personElement.getAttribute("id")));
NodeList personChilds = personElement.getChildNodes();
for (int j = 0; j < personChilds.getLength(); j++) {
if (personChilds.item(j).getNodeType() == Node.ELEMENT_NODE) {//判断当前节点是否是元素类型节点
Element childElement = (Element)personChilds.item(j);
if ("name".equals(childElement.getNodeName())) {
person.setName(childElement.getFirstChild().getNodeValue());
}else if ("age".equals(childElement.getNodeName())) {
person.setAge(new Short(childElement.getFirstChild().getNodeValue()));
}
}
}
persons.add(person);
}
return persons;
} }
DOMService
2.pull解析
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Writer;
import java.util.ArrayList;
import java.util.List;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlSerializer; import android.util.Xml;
import yu.entity.Person; /**
* 采用Pull解析器解析XML内容
*
* @author GIS
*
*/
public class PullService {
/**
* 采用Pull解析器生成XML内容
* @param persons
* @param outputStream
* @throws Throwable
*/
public static void save(List<Person> persons, OutputStream outputStream)
throws Throwable {
XmlSerializer serializer = Xml.newSerializer();
serializer.setOutput(outputStream, "UTF-8");
serializer.startDocument("UTF-8", true);
serializer.startTag(null, "persons");
for (Person person : persons) {
serializer.startTag(null, "person");
serializer.attribute(null, "id", person.getId().toString()); serializer.startTag(null, "name");
serializer.text(person.getName());
serializer.endTag(null, "name"); serializer.startTag(null, "age");
serializer.text(person.getAge().toString());
serializer.endTag(null, "age"); serializer.endTag(null, "person");
} serializer.endTag(null, "persons");
serializer.endDocument();
outputStream.flush();
outputStream.close();
} /**
* 采用Pull解析器生成XML内容,使用Writer
* @param persons
* @param writer
* @throws Throwable
*/
public static void saveWrite(List<Person> persons, Writer writer)
throws Throwable {
XmlSerializer serializer = Xml.newSerializer();
serializer.setOutput(writer);
serializer.startDocument("UTF-8", true);
serializer.startTag(null, "persons");
for (Person person : persons) {
serializer.startTag(null, "person");
serializer.attribute(null, "id", person.getId().toString()); serializer.startTag(null, "name");
serializer.text(person.getName());
serializer.endTag(null, "name"); serializer.startTag(null, "age");
serializer.text(person.getAge().toString());
serializer.endTag(null, "age"); serializer.endTag(null, "person");
} serializer.endTag(null, "persons");
serializer.endDocument();
writer.flush();
writer.close();
} /**
* 采用Pull解析器解析XML内容
*
* @param inStream
* @return
* @throws Throwable
*/
public List<Person> getHongXml(InputStream inStream) throws Throwable {
List<Person> persons = null;
Person person = null;
XmlPullParser parser = Xml.newPullParser();
parser.setInput(inStream, "UTF-8");
int eventType = parser.getEventType();// 产生第一个事件
while (eventType != XmlPullParser.END_DOCUMENT) {// 只要不是文档事件就一直循环
switch (eventType) {
case XmlPullParser.START_DOCUMENT:
persons = new ArrayList<Person>();
break;
case XmlPullParser.START_TAG:
String name = parser.getName();// 获得解析器当前指向的元素的名称
if ("person".equals(name)) {
person = new Person();
person.setId(Integer.valueOf(parser.getAttributeValue(0)));
} else if (person != null) {
if ("name".equals(name)) {
person.setName(parser.nextText());// 获取解析器当前元素的下一个文本节点的值
} else if ("age".equals(name)) {
person.setAge(Short.valueOf(parser.nextText()));
}
}
break;
case XmlPullParser.END_TAG:
if ("person".equals(parser.getName())) {
persons.add(person);
person = null;
}
break;
} eventType = parser.next();
}
return persons; }
public static Integer lastId(InputStream inStream) throws Throwable{
int id = 0;
XmlPullParser parser = Xml.newPullParser();
parser.setInput(inStream, "UTF-8");
int eventType = parser.getEventType();// 产生第一个事件
do {
if (eventType == XmlPullParser.START_TAG) {
String name = parser.getName();// 获得解析器当前指向的元素的名称
if ("person".equals(name)) {
id = Integer.valueOf(parser.getAttributeValue(0));
}
}
eventType = parser.next();
} while (eventType != XmlPullParser.END_DOCUMENT);
return id;
} }
PullService
3.SAXServer解析
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory; import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
/**
* 采用SAX解析XML
* @author GIS
*
*/
public class SAXService { public List<Person> getHongXml(InputStream inStream) throws Throwable {
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser parser = factory.newSAXParser();
ContentParser contentParser = new ContentParser();
parser.parse(inStream, contentParser);
inStream.close();
return contentParser.getPersons();
}
private final class ContentParser extends DefaultHandler{
private List<Person> persons = null;
public List<Person> getPersons() {
return persons;
} private String tag = null;
private Person person = null;
@Override
public void startDocument() throws SAXException {
persons = new ArrayList<Person>();
} @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;
} @Override
public void endElement(String uri, String localName, String qName)
throws SAXException {
if ("person".equals(localName)) {
persons.add(person);
person =null;
}
tag = null;
} @Override
public void characters(char[] ch, int start, int length)
throws SAXException {
if (tag != null) {
String data = new String(ch, start, length);//获取文本节点的数据
if ("name".equals(tag)) {
person.setName(data);
}else if ("age".equals(tag)) {
person.setAge(new Short(data));
}
}
} } }
SAXService
调用，这里举例用sax调用
SAXService service = new SAXService();
InputStream inStream = getClass().getClassLoader().getResourceAsStream(
"×××.xml");//放在src下，或此处变成网络路径下
List<Person> persons = service.getHongXml(inStream);
for (Person person : persons) {
Log.i(TAG, person.toString());
}