SAX解析

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Main.java

public class Main extends Activity {
	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		/* 获取XML文件流 */
		InputStream XML_Stream = getClass().getClassLoader()
				.getResourceAsStream("person.xml");

		List<Person> person_List = null;
		/* SAX解析XML文件 */
		SAX_Person service = new SAX_Person();
		try {
			person_List = service.getPersons(XML_Stream);

		} catch (Throwable e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		if (person_List != null) {
			for (int i = 0; i < person_List.size(); i++) {
				System.out.println("id=" + person_List.get(i).id + "name="
						+ person_List.get(i).name + "age="
						+ person_List.get(i).age);
			}
		} else {
			System.out.println("is null");
		}

		/* SAX解析XML文件 */
		XML_Stream = getClass().getClassLoader()
				.getResourceAsStream("task.xml");
		List<Task> task_List = null;

		SAX_Task saxTask = new SAX_Task();
		try {
			task_List = saxTask.getTasks(XML_Stream);

		} catch (Throwable e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		if (task_List != null) {
			for (int i = 0; i < task_List.size(); i++) {
				String title = task_List.get(i).title;
				String sender = task_List.get(i).sender;
				String time = task_List.get(i).time;
				String content = task_List.get(i).content;
				System.out.println("title=" + title + "sender=" + sender
						+ "time=" + time + "content=" + content);
			}
		} else {
			System.out.println("is null");
		}
	}
}

 

 

 

 SAX解析方法：

public class SAX_Person {

	/* 以输入流的形式传入XML文件 */
	public List<Person> getPersons(InputStream inStream) throws Throwable {
		/* SAX解析工厂 */
		SAXParserFactory factory = SAXParserFactory.newInstance();
		/* SAX解析器 */
		SAXParser parser = factory.newSAXParser();

		PersonParser personParser = new PersonParser();
		/* 调用parse方法 */
		parser.parse(inStream// 输入流
				, personParser// 调用回调方法
				);
		inStream.close();
		return personParser.getPersons();
	}

	/**
	 * 回调方法
	 * 
	 * @author lilin
	 * @date 2011-8-2 下午10:21:05
	 * @ClassName: PersonParser
	 * @Description: TODO
	 */
	// 继承DefaultHandler帮助类，该类实现了ContentHandler接口
	private final class PersonParser extends DefaultHandler

	{
		private List<Person> person_List = null;// person集合
		private String tagName = null;// 记录当前解析到的元素节点名称
		private Person person = null;

		public List<Person> getPersons() {
			return person_List;
		}

		/* 开始文档方法 ：当解析到 <person id="23"> */
		@Override
		public void startDocument() throws SAXException {
			person_List = new ArrayList<Person>();
		}

		/* 开始元素方法 */
		@Override
		public void startElement(String uri, // 命名空间
				String localName, // 不带命名空间前缀的标签名
				String qName,// 带命名空间前缀的标签名。
				Attributes attributes// 得到所有的属性名和相应的值
		) throws SAXException {

			if ("person".equals(localName)) {
				person = new Person();
				person.setId(new Integer(attributes.getValue(0)));// 取得标签person的属性id的值，并传给person的id
			}
			tagName = localName;//记录下当前的标签名
		}

		/*
		 * 开始文本方法 ：用来处理在XML文件中读到的内容
		 */
		@Override
		public void characters(char[] ch,// 文件的字符串内容
				int start, // 字符串在这个数组中的起始位置
				int length// 字符串在这个数组中的长度
		) throws SAXException {
			if (tagName != null) {
				String data = new String(ch, start, length);// 获取文本节点的数据
				if ("name".equals(tagName)) {
					person.setName(data);
				} else if ("age".equals(tagName)) {
					person.setAge(new Short(data));
				}
			}
		}

		/* 结束文档方法 */
		@Override
		public void endElement(String uri, String localName, String qName)
				throws SAXException {
			if ("person".equals(localName)) {
				person_List.add(person);
				person = null;
			}
			tagName = null;
		}
	}
}

 

 被解析的xml文件：

<?xml version="1.0" encoding="UTF-8"?>
<persons>
	<person id="23">
		<name>Jack</name>
		<age>30</age>
	</person>
	<person id="20">
		<name>Tom</name>
		<age>25</age>
	</person>
</persons>

 

 Model类：

package com.lilin.sax;

public class Person {
	public int id;
	public String name;
	public short 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 short getAge() {
		return age;
	}

	public void setAge(short age) {
		this.age = age;
	}
}