JavaEE：XML解析

package cn.lsl.pull.stax;
import java.io.FileInputStream;
import org.junit.Test;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserFactory; public class PullTest { //查询 编程高手秘笈的价格
@Test
public void demo2() throws Exception{
XmlPullParserFactory xmlPullParserFactory = XmlPullParserFactory.newInstance();
XmlPullParser parser = xmlPullParserFactory.newPullParser();
parser.setInput(new FileInputStream("books.xml"),"utf-8"); int event;
//定义标志位
boolean isFound = false;
while((event = parser.getEventType())!= XmlPullParser.END_DOCUMENT){
if(event == XmlPullParser.START_TAG && parser.getName().equals("name")){
String bookname = parser.nextText();
if(bookname.equals("编程高手秘笈")){
isFound = true;
}
} if(event == XmlPullParser.START_TAG && parser.getName().equals("price") && isFound){
System.out.println(parser.nextText());
break;
} www.sychzs.cn();
}
} @Test
public void demo1() throws Exception{
//1.工厂
XmlPullParserFactory xmlPullParserFactory = XmlPullParserFactory.newInstance();
//2.通过工厂获得解析器
XmlPullParser parser = xmlPullParserFactory.newPullParser();
//3.将xml文件传递给解析器
parser.setInput(new FileInputStream("books.xml"), "utf-8"); //pull解析器用拉模式解析数据
int event;
while((event = parser.getEventType()) != XmlPullParser.END_DOCUMENT){
if(event == XmlPullParser.START_TAG){
System.out.println(parser.getName() + "元素开始了...");
}
if(event == XmlPullParser.END_TAG){
System.out.println(parser.getName() + "元素结束了...");
}
www.sychzs.cn();
}
}
}

9.Pull解析器生成xml文档功能 --- 通过XmlSerializer生成xml文档
解析xml：文档开始、元素开始、文本元素、元素结束、文档结束
生成xml：生成文档声明（文档开始）、元素开始、文本内容、元素结束、文档结束
三种方式生成xml
1）生成简单xml
2）通过对象数据生成xml
3）通过对象List数据生成xml

eg: