public static void test05() {
XMLInputFactory factory = XMLInputFactory.newInstance();
InputStream is = null;
try {
is = TestStax.class.getClassLoader().getResourceAsStream("books.xml");
//基于Filter的過濾方式，可以有效的過濾掉不用進行操作的節點，效率會高一些
XMLEventReader reader = factory.createFilteredReader(factory.createXMLEventReader(is),
new EventFilter() {
@Override
public boolean accept(XMLEvent event) {
//返回true表示會顯示，返回false表示不顯示
if(event.isStartElement()) {
String name = event.asStartElement().getName().toString();
if(name.equals("title")||name.equals("price"))
return true;
}
return false;
}
});
int num = 0;
while(reader.hasNext()) {
//通過XMLEvent來獲取是否是某種節點類型
XMLEvent event = reader.nextEvent();
if(event.isStartElement()) {
//通過event.asxxx轉換節點
String name = event.asStartElement().getName().toString();
if(name.equals("title")) {
System.out.print(reader.getElementText()+":");
}
if(name.equals("price")) {
System.out.print(reader.getElementText()+"\n");
}
}
num++;
}
System.out.println(num);
} catch (XMLStreamException e) {
e.printStackTrace();
} finally {
try {
if(is!=null) is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}