1、这里使用的XML文档为students.xml

具体如下：注意空白行

<span style="font-family:Microsoft YaHei;"><?xml version="1.0" encoding="UTF-8"?>
<?xml-sytlesheet type="text/xsl" href="students.xsl"?>
<students>
	<student sn="01">
		<name>张三</name>
		<age>18</age>
	</student>
	
	<student sn="02">
		<name>李四
		</name>
		<age>20</age>
	</student>
</students>
<!--注意这里，student结点下面有5个子节点，分别是文本结点,name,文本，age，文本,而name结点只有1个子节点 文本，值为张三,因为空白文本和文本可以合并--></span>

<span style="font-family:Microsoft YaHei;">package MyXMLFactory;

import java.io.File;
import java.io.IOException;

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

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

public class MyXMLFactory {
	public static void main(String[] args) throws ParserConfigurationException {
		DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
		System.out.println("XML解析器工厂类为:" + dbf.getClass().getName());
		DocumentBuilder db = dbf.newDocumentBuilder();
		System.out.println("DOM解析器类为:" + db.getClass().getName());
		try {
			Document document = db.parse(new File("D:/JavaTest/students.xml"));
			NodeList nl = document.getElementsByTagName("student");
			for(int i=0; i<nl.getLength(); i++){
				Element student = (Element)nl.item(i);
				
				Element elName = (Element)student.getElementsByTagName("name").item(0);
				Element elAge = (Element)student.getElementsByTagName("age").item(0);
				NodeList elNameChilds =  elName.getChildNodes();
				NodeList stuChilds = student.getChildNodes();
				for(int j = 0; j<stuChilds.getLength(); j++){
					Node child = (Node)stuChilds.item(j);
					
					System.out.println("j="+ j + "--childName=" + child.getNodeName() + "--childValue=" + child.getNodeValue()+"--");
				}
				String name = elName.getFirstChild().getNodeValue();
				String age = elAge.getFirstChild().getNodeValue();
				
				System.out.println("姓名:" + name);
				System.out.println("年龄:" + age);
				System.out.println("--------------------------");
				
				
			}
		} catch (SAXException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}

	}

}
</span>

输出为

<span style="font-family:Microsoft YaHei;">XML解析器工厂类为:com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl
DOM解析器类为:com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl
j=0--childName=#text--childValue=
		--
j=1--childName=name--childValue=null--
j=2--childName=#text--childValue=
		--
j=3--childName=age--childValue=null--
j=4--childName=#text--childValue=
	--
姓名:张三
年龄:18
--------------------------
j=0--childName=#text--childValue=
		--
j=1--childName=name--childValue=null--
j=2--childName=#text--childValue=
		--
j=3--childName=age--childValue=null--
j=4--childName=#text--childValue=
	--
姓名:李四
		
年龄:20
--------------------------
</span>