使用stax操作xml（1）

xml样例，这是xpath  api自带的样例

<?xml version="1.0" encoding="UTF-8"?>

<bookstore>

<book category="COOKING">

  <title lang="en">Everyday Italian</title>

  <author>Giada De Laurentiis</author>

  <year>2005</year>

  <price>30.00</price>

</book>

<book category="CHILDREN">

  <title lang="en">Harry Potter</title>

  <author>J K. Rowling</author>

  <year>2005</year>

  <price>29.99</price>

</book>

<book category="WEB">

  <title lang="en">XQuery Kick Start</title>

  <author>James McGovern</author>

  <author>Per Bothner</author>

  <author>Kurt Cagle</author>

  <author>James Linn</author>

  <author>Vaidyanathan Nagarajan</author>

  <year>2003</year>

  <price>49.99</price>

</book>

<book category="WEB">

  <title lang="en">Learning XML</title>

  <author>Erik T. Ray</author>

  <year>2003</year>

  <price>39.95</price>

</book>

</bookstore>

/**
* 使用光标的方式进行读取
* @throws XMLStreamException
* @throws IOException
*/
@Test
public void test01() throws XMLStreamException, IOException{
XMLInputFactory xf= XMLInputFactory.newInstance();
InputStream is=TestStax.class.getClassLoader().getResourceAsStream("books.xml");
XMLStreamReader reader=xf.createXMLStreamReader(is);
while(reader.hasNext()){
int type=reader.next();
if(type==XMLStreamConstants.START_ELEMENT){
System.out.println(reader.getName());
}else if (type==XMLStreamConstants.CHARACTERS){
System.out.println(reader.getText().trim());
}else if(type==XMLStreamConstants.END_ELEMENT){
System.out.println(reader.getName());
}
}
if(is!=null){
is.close();
}
}