Android_XMLl解析和序列化

/*
 * 2014年12月30日19:50:25
 * 调用writeXmlToLocal()方法把xml序列化到本地
 * 调用parserXmlToLocal()方法解析xml
*/

首先创建一个用于测试的类Person   

public class Person{private int id;private String name;private int age;public Person(){super();}public Person(int id, String name, int age){super();this.id = id;this.name = name;this.age = age;}public String toString(){return "Person [id=" + id + ", name=" + name + ", age=" + age + "]";}public int getId(){return id;}public void setId(int id){this.id = id;}public String getName(){return name;}public void setName(String name){this.name = name;}public int getAge(){return age;}public void setAge(int age){this.age = age;}}//把xml序列化到本地private void writeXmlToLocal(){List<person> personlist = getPersonList();try{File path = new File(Environment.getExternalStorageDirectory(),"persons.xml");FileOutputStream fos = new FileOutputStream(path);//指定序列化对象输出的位置和编码XmlSerializer serializer = Xml.newSerializer();serializer.setOutput(fos, "utf-8");//开始写<?xml version="1.0" encoding="UTF-8" standelone="yes" ?>serializer.startDocument(null,true);//设置开始节点serializer.startTag(null, "persons");//<persons>for(Person person:personlist){System.err.println(person.getName());//开始写人serializer.startTag(null, "person");// <person>serializer.attribute(null, "id", String.valueOf(person.getId()));//写名字serializer.startTag(null, "name");// <name>serializer.text(person.getName());serializer.endTag(null, "name");// </name>serializer.startTag(null, "age");// serializer.text(String.valueOf(person.getAge()));serializer.endTag(null, "age");// </age>serializer.endTag(null, "person");// </person>}serializer.endTag(null, "persons");//</persons>serializer.endDocument();//结束} catch (Exception e){e.printStackTrace();}}//解析xmlprivate List<person> parserXmlToLocal(){List<person> personlist = null;try{//获取要解析文件File path = new File(Environment.getExternalStorageDirectory(),"persons.xml");FileInputStream fis = new FileInputStream(path);//创建pull解析器对象XmlPullParser parser = Xml.newPullParser();//指定要解析的文件和编码格式parser.setInput(fis, "utf-8");//获得事件类型int eventType = parser.getEventType();String togName = null;Person person = null; while(eventType != parser.END_DOCUMENT){ togName = parser.getName();//获取当前节点的名称switch (eventType){case XmlPullParser.START_TAG:switch (togName){case "persons":// <persons>personlist = new ArrayList<person>();break;case "person":// <person id="">person = new Person();person.setId(Integer.valueOf(parser.getAttributeValue(null, "id")));//得到并设置idbreak;case "name":// <name>person.setName(parser.nextText()); break;case "age":// person.setAge(Integer.valueOf(parser.nextText())); break;default:break;}break;case XmlPullParser.END_TAG:if("person".equals(togName))// </age></name></person>{//把上面设置好的person添加到personlist集合中personlist.add(person);}break;default:break;}eventType = parser.next();//获取下一个节点的类型}} catch (Exception e){e.printStackTrace();}return personlist;}private List<person> getPersonList(){List<person> personlist = new ArrayList<person>();Person temp = null;for(int i=0; i<30; i++){temp = new Person(i, "wang"+i, 18+i);personlist.add(temp);}return personlist;}</person></person></person></person></persons></person></person></person>