android 三种解析，构建xml方法

 package com.zyq.service;

import java.io.OutputStream;

import java.util.List;

import org.xmlpull.v1.XmlSerializer;

import android.util.Xml;

import com.zyq.voo.Person;

/**

 * 采用PULL  生成XML数据

 * @author Administrator

 *

 */

public class PullBuildXMLService

{

       /**

        *

        * @param persons

        * @param outputStream

        * @throws Exception

        */

       public void buildXML(List<Person> persons,OutputStream outputStream) throws Exception

       {

              XmlSerializer serializer=Xml.newSerializer();

              serializer.setOutput(outputStream, "utf-8"); //转码

             

              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.close();

       }

}

 

打开的结果：

 

 

 

采用官方PULL解析器解析XML数据

package com.zyq.service;

import java.io.InputStream;

import java.util.ArrayList;

import java.util.List;

import org.xmlpull.v1.XmlPullParser;

import android.util.Xml;

import com.zyq.voo.Person;

/**

 * 采用官方PULL解析器解析XML数据

 * @author Administrator

 *

 */

public class PullPersonService

{

       /**

        * 采用官方PULL解析器解析XML数据

        * @param inputStream person.xml

        * @return persons List集合

        * @throws Throwable

        */

       public List<Person> getPersons(InputStream inputStream) throws Throwable

       {

              List<Person> persons=null;

              Person person=null;

              XmlPullParser parser=Xml.newPullParser();

              parser.setInput(inputStream, "utf-8");

              int event=parser.getEventType();

             

              while(event!=XmlPullParser.END_DOCUMENT)

              {

                     switch (event)

                     {

                            case XmlPullParser.START_DOCUMENT:

                                  

                                   persons=new ArrayList<Person>();

                                  

                                   break;

                            case XmlPullParser.START_TAG:

                                  

                                   if("person".equals(parser.getName()))

                                   {

                                          person=new Person();

                                          Integer id=new Integer(parser.getAttributeValue(0));

                                          person.setId(id);

                                   }

                                   if(person!=null)

                                   {

                                          if("name".equals(parser.getName()))

                                          {

                                                 String name=parser.nextText().toString();

                                                 person.setName(name);

                                          }

                                          else if("age".equals(parser.getName()))

                                          {

                                                 Short age=new Short(parser.nextText().toString());

                                                 person.setAge(age);

                                          }

                                   }

                                   break;

                           

                            case XmlPullParser.END_TAG:

                                  

                                   if("person".equals(parser.getName()))

                                   {

                                          persons.add(person);

                                          person=null;

                                   }

                                  

                                   break;

                                  

                            default:

                                   break;

                     }

                     event=parser.next();

              }

              return persons;

       }

}

 

 

通过dom创建一个xml文件

package com.domxmltest;

 

import java.io.File;

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import javax.xml.transform.OutputKeys;

import javax.xml.transform.Transformer;

import javax.xml.transform.TransformerFactory;

import javax.xml.transform.dom.DOMSource;

import javax.xml.transform.stream.StreamResult;

import org.w3c.dom.Document;

import org.w3c.dom.Element;

 

public class CreateXML {

public static void main(String[] args) {

Document doc;

//声明xml文档中的各个元素对象

Element students,student;

Element name=null;

Element address=null;

Element tel=null;

Element email=null;

 

try{

//得到dom解析器的工厂实例

DocumentBuilderFactory factory=DocumentBuilderFactory.newInstance();

//从dom工厂实例获得dom解析器

DocumentBuilder builder=factory.newDocumentBuilder();

//创建文档树模型对象

doc=builder.newDocument();

//如果创建的文档树模型不为空

if(null!=doc){

//创建students元素

students=doc.createElement(“students”);

//创建student元素

student=doc.createElement(“student”);

//设置student元素的属性id的值为95003

student.setAttribute(“id”, “95003″);

//将student元素添加为students的子元素

students.appendChild(student);

//创建name元素

name=doc.createElement(“name”);

//将一个文本结点添加为name元素的子结点

name.appendChild(doc.createTextNode(“Mr. Zhang”));

//将name元素添加为student的子元素

student.appendChild(name);

address=doc.createElement(“address”);

address.appendChild(doc.createTextNode(“Shangdong Qingdao”));

student.appendChild(address);

tel=doc.createElement(“tel”);

tel.appendChild(doc.createTextNode(“[phone]″));

student.appendChild(tel);

email=doc.createElement(“email”);

email.appendChild(doc.createTextNode(“[e-mail]”));

student.appendChild(email);

//将students元素作为根元素添加到xml文档树中

doc.appendChild(students);

//将内存中的文档树保存为students.xml文档

Transformer transformer=TransformerFactory.newInstance().newTransformer();//得到转换器

//设置换行

transformer.setOutputProperty(OutputKeys.INDENT, “yes”);

//写入文件

transformer.transform(new DOMSource(doc), new StreamResult(new File(“d:/student.xml”)));

}

}catch (Exception e) {

e.printStackTrace();

}

}

}

 

 

采用DOM完成XML的解析

package com.zyq.service;

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;

import com.zyq.voo.Person;

/**

 * 采用DOM完成XML的解析

 * @author Administrator

 *

 */

public class DOMPersonService

{

       /**

        * DOM 解析person.xml

        * @param inputStream person.xml数据

        * @return persons

        * @throws Exception

        */

       public List<Person> getPersons(InputStream inputStream) throws Exception

       {

              List<Person> persons=new ArrayList<Person>();

              DocumentBuilderFactory factory=DocumentBuilderFactory.newInstance();

              DocumentBuilder builder=factory.newDocumentBuilder();

              Document document=builder.parse(inputStream);

              Element element=document.getDocumentElement();

              NodeList nodeList=element.getElementsByTagName("person");

              for(int i=0;i<nodeList.getLength();i++)

              {

                     Element personNode=(Element)nodeList.item(i);

                     Integer id=new Integer(personNode.getAttribute("id"));

                     Person person=new Person();

                     person.setId(id);

                    

                     NodeList childNodes=personNode.getChildNodes();

                     for(int j=0;j<childNodes.getLength();i++)

                     {

                            if(childNodes.item(j).getNodeType()==Node.ELEMENT_NODE)

                            {

                                   if("name".equals(childNodes.item(j).getNodeName()))

                                   {

                                          String name=childNodes.item(j).getFirstChild().getNodeName();

                                          person.setName(name);

                                   }

                                   else if("age".equals(childNodes.item(j).getNodeName()))

                                   {

                                          Short age=new Short(childNodes.item(j).getFirstChild().getNodeName());

                                          person.setAge(age);

                                   }

                            }

                     }

                     persons.add(person);

              }

             

              return persons;

       }

}

 

SAX解析person.xml

package com.zyq.service;

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;

import com.zyq.voo.Person;

public class SAXPersonService

{

       /**

        * SAX解析person.xml

        * @param inputStream  person.xml数据

        * @return persons

        * @throws Throwable

        */

       public List<Person> getPersons(InputStream inputStream) throws Throwable

       {

              SAXParserFactory factory=SAXParserFactory.newInstance();

              SAXParser parser=factory.newSAXParser();

              PersonHandel personHandel=new PersonHandel();

              parser.parse(inputStream, personHandel);

             

              return personHandel.getPersons();

       }

      

       private class PersonHandel extends DefaultHandler

       {

              private List<Person> persons;

              private String preTAG;

              private Person person;

             

              public List<Person> getPersons()

              {

                     return persons;

              }

              @Override

              public void characters(char[] ch, int start, int length)

                            throws SAXException

              {

                     if(preTAG!=null)

                     {

                            String data=new String(ch, start, length);

                            if("name".equals(preTAG))

                            {

                                   person.setName(data);

                            }

                            else if("age".equals(preTAG))

                            {

                                   person.setAge(new Short(data));

                            }

                     }

              }

              @Override

              public void startElement(String uri, String localName, String qName,

                            Attributes attributes) throws SAXException

              {

                     if("person".equals(localName))

                     {

                            person=new Person();

                            Integer id= new Integer(attributes.getValue(0));

                            person.setId(id);

                     }

                     preTAG=localName;

              }

             

              @Override

              public void startDocument() throws SAXException

              {

                     persons=new ArrayList<Person>();

              }

             

              @Override

              public void endElement(String uri, String localName, String qName)

                            throws SAXException

              {

                     if("person".equals(localName))

                     {

                            persons.add(person);

                            person=null;

                     }

                    

                     preTAG=null;

              }

             

       }

}