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 + "]";
     }

 }

Student

--> 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...