Java-->xml的pull解析

--> pull解析器是android内置的解析器，解析原理与sax类似

--> xml文件student.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!-- 有三个学生：姓名、年龄、性别。把这三个学生的信息用xml表示出来 -->
<students>
    <student name="zhangsan">
        <age>18</age>
        <sex>男</sex>
    </student>
    <student name="lisi">
        <age>22</age>
        <sex>女</sex>
    </student>
    <student name="wangwu">
        <age>20</age>
        <sex>男</sex>
    </student>
</students>

--> Student 类:

package com.dragon.java.pullparse;

public class Student {
    private String name;
    private int age;
    private String sex;

    public Student() {
        super();
    }

    public Student(String name, int age, String sex) {
        super();
        this.name = name;
        this.age = age;
        this.sex = sex;
    }

    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;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    @Override
    public String toString() {
        return "Student [name=" + name + ", age=" + age + ", sex=" + sex + "]";
    }

}

--> Test 测试类：

package com.dragon.java.pullparse;

import static org.xmlpull.v1.XmlPullParser.END_DOCUMENT;
import static org.xmlpull.v1.XmlPullParser.END_TAG;
import static org.xmlpull.v1.XmlPullParser.START_TAG;
import static org.xmlpull.v1.XmlPullParser.TEXT;

import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlPullParserFactory;

/*
 * pull解析器
 */
public class Test {
    public static void main(String[] args) throws XmlPullParserException,
            IOException {
        List<Student> list = null;
        Student student = null;
        // 1、获取一个XmlPullParser解析器
        XmlPullParserFactory factory = XmlPullParserFactory.newInstance(); // 调用解析器工厂的静态方法，创建一个解析器工厂
        XmlPullParser parser = factory.newPullParser(); // 创建一个pull解析器
        parser.setInput(new FileReader(
                "D:/workspace/08-25/src/com/dragon/java/xml/students.xml")); // 设置一个输入流，告诉要解析的xml数据的来源
        int event = parser.getEventType(); // 获取当前事件的类型
        while (event != END_DOCUMENT) { // 当碰到文档结束的时候，结束循环
            switch (event) {
            case START_TAG:
                String tag = parser.getName();
                if (tag.equals("students")) {
                    list = new ArrayList<>();
                } else if (tag.equals("student")) {
                    student = new Student();
                    student.setName(parser.getAttributeValue(null, "name")); // 参数1：是命名空间，如果命名空间，则传入null。参数2：属性的名字
                    list.add(student);
                } else if (tag.equals("age")) {
                    student.setAge(Integer.parseInt(parser.nextText())); // 获取当前事件后面的text事件，text的值
                } else if (tag.equals("sex")) {
                    student.setSex(parser.nextText());
                }
                break;
            case END_TAG:
                break;
            case TEXT:
                break;
            default:
                break;
            }
            event = parser.next();
        }
        for (Student student2 : list) {
            System.out.println(student2);
        }
    }
}

--> 也是蛮麻烦的...