有关Android 平台解析ＸＭＬ

来源：互联网发布：淘宝网哪些鞋店比较好编辑：程序博客网时间：2024/05/16 11:16
项目总体结构图
person．xml <?xml version="1.0" encoding="UTF-8"?>    <persons>        <person id="1">            <age>19</age>            <name>张三</name>        </person>        <person id="2">            <age>20</age>            <name>王五</name>        </person>    </persons>MainActivity package com.xml2;import android.os.Bundle;import android.app.Activity;import android.view.Menu;public class MainActivity extends Activity {    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        getMenuInflater().inflate(R.menu.main, menu);        return true;    }}Person /** *  */package com.zhou.entity;/** * @author zyw * @Email zyw_205@gamil.com * 2012-12-30 */public class Person {    private Integer id;    private Integer age;    private String name;            public Person() {    }    public Person(Integer id, Integer age, String name) {        super();        this.id = id;        this.age = age;        this.name = name;    }    public Integer getId() {        return id;    }    public void setId(Integer id) {        this.id = id;    }    public Integer getAge() {        return age;    }    public void setAge(Integer age) {        this.age = age;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    @Override    public String toString() {        return "Person [id=" + id + ", age=" + age + ", name=" + name + "]";    }        }PersonServer /** *  */package com.zhou.server;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.util.ArrayList;import java.util.List;import org.xmlpull.v1.XmlPullParser;import org.xmlpull.v1.XmlPullParserException;import org.xmlpull.v1.XmlPullParserFactory;import org.xmlpull.v1.XmlSerializer;import android.util.Xml;import com.zhou.entity.Person;/** * @author zyw * @Email zyw_205@gamil.com * 2012-12-30 */public class PersonServer {    /**     *      * @param xml     * @return     * @throws Exception     */    public static List<Person> getPersons(InputStream xml) throws Exception{        List<Person> persons=null;        Person person=null;        XmlPullParser pullParser=Xml.newPullParser(); //XmlPullParserFactory.newInstance().newPullParser();        pullParser.setInput(xml, "UTF-8");        int event=pullParser.getEventType();        while(event!=XmlPullParser.END_DOCUMENT){            switch (event) {            case XmlPullParser.START_DOCUMENT:                persons=new ArrayList<Person>();                break;                            case XmlPullParser.START_TAG:                if("person".equals(pullParser.getName())){                    int id=new Integer(pullParser.getAttributeValue(0));                    person=new Person();                    person.setId(id);                }                                if("age".equals(pullParser.getName())){                    int age=new Integer(pullParser.nextText());                    person.setAge(age);                }                                if("name".equals(pullParser.getName())){                    String name=pullParser.nextText();                    person.setName(name);                }                break;                            case XmlPullParser.END_TAG:                if("person".equals(pullParser.getName())){                    persons.add(person);                    person=null;                }                break;            }            event=pullParser.next();                    }        return persons;            }        /**     * 保存数据     * @param persons  数据     * @param out 输出方向     * @throws Exception     */    public static void save (List<Person> persons,OutputStream out ) throws Exception{        XmlSerializer serializer=Xml.newSerializer();        serializer.setOutput(out, "UTF-8");        serializer.startDocument("UTF-8", true);//第一个参数 头文件的编码 第二个 文件是否可以单独存在        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();        out.flush();        out.close();            }    }/** *  */package com.zhou.test;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.InputStream;import java.util.ArrayList;import java.util.List;import com.zhou.entity.Person;import com.zhou.server.PersonServer;import android.test.AndroidTestCase;import android.util.Log;import android.widget.AbsListView;/** * @author zyw * @Email zyw_205@gamil.com * 2012-12-30 */public class PersonServerTest extends AndroidTestCase{    private static final String tag="message";    public void testPerson() throws Exception{        InputStream xml=this.getClass().getClassLoader().getResourceAsStream("person.xml");        List<Person> persons=PersonServer.getPersons(xml);        for (Person person : persons) {            System.out.println(person.toString());            Log.i(tag, person.toString());        }    }        public void testsave() throws Exception{        List<Person> persons=new ArrayList<Person>();        persons.add(new Person(1, 12, "Luke"));        persons.add(new Person(2, 22, "张三"));        persons.add(new Person(3, 42, "周周"));        //<包>/files        File file=new File(getContext().getFilesDir(),"person2.xml");        FileOutputStream outStream=new FileOutputStream(file);                PersonServer.save(persons, outStream);    }}
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