Java XML DOM解析范例源码

下边内容内容是关于Java XML　DOM解析范例的内容。
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.w3c.dom.Node;

import com.xtlh.cn.entity.Book;

public class DomParseService {
public List<Book> getBooks(InputStream inputStream) throws Exception{
List<Book> list = new ArrayList<Book>();
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.parse(inputStream);
Element element = document.getDocumentElement();

NodeList bookNodes = element.getElementsByTagName("book");
for(int i=0;i<bookNodes.getLength();i++){
Element bookElement = (Element) bookNodes.item(i);
Book book = new Book();
book.setId(Integer.parseInt(bookElement.getAttribute("id")));
NodeList childNodes = bookElement.getChildNodes();
for(int j=0;j<childNodes.getLength();j++){
if(childNodes.item(j).getNodeType()==Node.ELEMENT_NODE){
if("name".equals(childNodes.item(j).getNodeName())){
book.setName(childNodes.item(j).getFirstChild().getNodeValue());
}else if("price".equals(childNodes.item(j).getNodeName())){
book.setPrice(Float.parseFloat(childNodes.item(j).getFirstChild().getNodeValue()));
}
}
list.add(book);
return list;
}
}

public class Book {
private int id;
private String name;
private float price;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public float getPrice() {
return price;
}
public void setPrice(float price) {
this.price = price;
}
@Override
public String toString(){
return this.id+":"+this.name+":"+this.price;
}
}

public class ParseTest extends TestCase{

public void testDom() throws Exception{
InputStream input = this.getClass().getClassLoader().getResourceAsStream("book.xml");
DomParseService dom = new DomParseService();
List<Book> books = dom.getBooks(input);
for(Book book : books){
System.out.println(book.toString());
}
}
}

xml文件描述：

<?xml version="1.0" encoding="UTF-8"?>
<books>
<book id="12">
<name>thinking in java</name>
<price>85.5</price>
</book>
<book id="15">
<name>Spring in Action</name>
<price>39.0</price>
</book>
</books>