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:

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <!-- 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 -->
 3 <students>
 4     <student name="zhangsan">
 5         <age>18</age>
 6         <sex>男</sex>
 7     </student>
 8     <student name="lisi">
 9         <age>22</age>
10         <sex>女</sex>
11     </student>
12     <student name="wangwu">
13         <age>20</age>
14         <sex>男</sex>
15     </student>
16 </students>

--> Student 类:

 1 package com.dragon.java.pullparse;
 2 
 3 public class Student {
 4     private String name;
 5     private int age;
 6     private String sex;
 7 
 8     public Student() {
 9         super();
10     }
11 
12     public Student(String name, int age, String sex) {
13         super();
14         this.name = name;
15         this.age = age;
16         this.sex = sex;
17     }
18 
19     public String getName() {
20         return name;
21     }
22 
23     public void setName(String name) {
24         this.name = name;
25     }
26 
27     public int getAge() {
28         return age;
29     }
30 
31     public void setAge(int age) {
32         this.age = age;
33     }
34 
35     public String getSex() {
36         return sex;
37     }
38 
39     public void setSex(String sex) {
40         this.sex = sex;
41     }
42 
43     @Override
44     public String toString() {
45         return "Student [name=" + name + ", age=" + age + ", sex=" + sex + "]";
46     }
47 
48 }

Student

1 package com.dragon.java.pullparse; 2 3 import static org.xmlpull.v1.XmlPullParser.END_DOCUMENT; 4 import static org.xmlpull.v1.XmlPullParser.END_TAG; 5 import static org.xmlpull.v1.XmlPullParser.START_TAG; 6 import static org.xmlpull.v1.XmlPullParser.TEXT; 7 8 import java.io.FileReader; 9 import java.io.IOException; 10 import java.util.ArrayList; 11 import java.util.List; 12 13 import org.xmlpull.v1.XmlPullParser; 14 import org.xmlpull.v1.XmlPullParserException; 15 import org.xmlpull.v1.XmlPullParserFactory; 16 17 /* 18 * pull解析器 19 */ 20 public class Test { 21 public static void main(String[] args) throws XmlPullParserException, 22 IOException { 23 List<Student> list = null; 24 Student student = null; 25 // 1、获取一个XmlPullParser解析器 26 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 27 XmlPullParser parser = factory.newPullParser(); // 创建一个pull解析器 28 parser.setInput(new FileReader( 29 "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 30 int event = parser.getEventType(); // 获取当前事件的类型 31 while (event != END_DOCUMENT) { // 当碰到文档结束的时候，结束循环 32 switch (event) { 33 case START_TAG: 34 String tag = parser.getName(); 35 if (tag.equals("students")) { 36 list = new ArrayList<>(); 37 } else if (tag.equals("student")) { 38 student = new Student(); 39 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 40 list.add(student); 41 } else if (tag.equals("age")) { 42 student.setAge(Integer.parseInt(parser.nextText())); // 获取当前事件后面的text事件，text的值 43 } else if (tag.equals("sex")) { 44 student.setSex(parser.nextText()); 45 } 46 break; 47 case END_TAG: 48 break; 49 case TEXT: 50 break; 51 default: 52 break; 53 } 54 event = parser.next(); 55 } 56 for (Student student2 : list) { 57 System.out.println(student2); 58 } 59 } 60 }

Java-->xml的pull解析

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