XML 文件解析 SAXParserFactory

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1、XML文件userinfo.xml 可以放到assets文件夹下或者包下面

<?xml version="1.0" encoding="UTF-8"?><admins>    <admin id="1">        <name>于美光</name>        <age>25</age>        <address>NanJing</address>        <phone>18855529592</phone>    </admin>     <admin id="2">        <name>于美光</name>        <age>25</age>        <address>NanJing</address>        <phone>18855529592</phone>    </admin></admins>

2、新建一个与XML文件对应的类User.java

public class User {private int id;private String name;private String address;private int age;private String phone;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 String getAddress() {return address;}public void setAddress(String address) {this.address = address;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}public String getPhone() {return phone;}public void setPhone(String phone) {this.phone = phone;}}

3.工具类XmlParser 继承DefaultHandler

public class XmlParser extends DefaultHandler{private String tagName = null;private User user = null;public User getUser() {return user;}public void setUser(User user) {this.user = user;}@Overridepublic void startDocument() throws SAXException {user = new User();}@Overridepublic void startElement(String uri, String localName, String qName,Attributes attributes) throws SAXException {tagName = localName;if ("admin".equals(tagName)) {user.setId(Integer.parseInt(attributes.getValue(0)));}super.startElement(uri, localName, qName, attributes);}@Overridepublic void characters(char[] ch, int start, int length)throws SAXException {if (tagName != null) {if (tagName.equals("name")) {String str = new String(ch,start,length);user.setName(str);}else if(tagName.equals("age")){String str = new String(ch,start,length);user.setAge(Integer.parseInt(str));}else if(tagName.equals("address")){String str = new String(ch,start,length);user.setAddress(str);}else if(tagName.equals("phone")){String str = new String(ch,start,length);user.setPhone(str);}}super.characters(ch, start, length);}@Overridepublic void endElement(String uri, String localName, String qName)throws SAXException {tagName = null;super.endElement(uri, localName, qName);}@Overridepublic void endDocument() throws SAXException {super.endDocument();}}

4.使用工具类进行解析

public class MainActivity extends Activity {private User user;private TextView txtUser;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);try {parse();} catch (IOException e) {e.printStackTrace();} catch (ParserConfigurationException e) {e.printStackTrace();} catch (SAXException e) {e.printStackTrace();}txtUser = (TextView)findViewById(R.id.txtUser);txtUser.setText(Html.fromHtml("<b>ID:</b>"+user.getId()+"<b>NAME:</b>"+"<b>AGE:</b>"+user.getAge()+"<b>Address:</b>"+user.getAddress()+"<b>PHONE:</b>PHPNE"+"=+"+user.getPhone()));}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {getMenuInflater().inflate(R.menu.main, menu);return true;}private void parse() throws IOException, ParserConfigurationException, SAXException{SAXParserFactory spf = SAXParserFactory.newInstance();SAXParser sp = spf.newSAXParser();XmlParser parser = new XmlParser();//InputStream is = this.getResources().getAssets().open("userinfo.xml");//资源文件夹下面的InputStream is = this.getClass().getResourceAsStream("userinfo.xml");//和该类同一包下面sp.parse(is, parser);user = parser.getUser();}}

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