XmlHandle.java:

package shuai.study.xml;

import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;

import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;

/**
 * @ClassName: ReadXml
 * @Description: TODO
 * @author Zhou Shengshuai
 * @date 2014年9月23日 下午5:09:38
 * 
 */
public class XmlHandle {

	public static void readXml(String filePath) {
		XMLInputFactory xmlInputFactory = XMLInputFactory.newInstance();
		XMLStreamReader xmlStreamReader = null;

		try {
			InputStream fileInputStream = new FileInputStream(filePath);
			xmlStreamReader = xmlInputFactory.createXMLStreamReader(new BufferedInputStream(fileInputStream,65536));

			readXml(xmlStreamReader);
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (XMLStreamException e) {
			e.printStackTrace();
		} finally {
			if (xmlStreamReader != null) {
				try {
					xmlStreamReader.close();
				} catch (XMLStreamException e) {
					e.printStackTrace();
				}
			}
		}
	}

	public static void readXml(XMLStreamReader xmlStreamReader) {
		try {
			while (xmlStreamReader.hasNext()) {
				int outType = xmlStreamReader.next();

				if (outType == XMLStreamReader.START_ELEMENT && "Rule".equals(xmlStreamReader.getLocalName())) {
					System.out.println("---------------------------------------Rule Start---------------------------------------");

					while (xmlStreamReader.hasNext()) {
						int inType = xmlStreamReader.next();

						if (inType == XMLStreamReader.START_ELEMENT) {
							String elementText = xmlStreamReader.getElementText();

							if ("SourceObjectClass".equals(xmlStreamReader.getLocalName())) {
								System.out.println("Source Object Class: " + elementText);
							}

							if ("DestObjectClass".equals(xmlStreamReader.getLocalName())) {
								System.out.println("Destination Object Class: " + elementText);
							}

							if ("ManageObjectClass".equals(xmlStreamReader.getLocalName())) {
								System.out.println("Manage Object Class: " + elementText);
							}

							if ("SourceObjectDN".equals(xmlStreamReader.getLocalName())) {
								System.out.println("Source Object DN: " + elementText);
							}

							if ("DestObjectDN".equals(xmlStreamReader.getLocalName())) {
								System.out.println("Destination Object DN: " + elementText);
							}
						}

						if (inType == XMLStreamReader.END_ELEMENT && "Rule".equals(xmlStreamReader.getLocalName())) {
							System.out.println("---------------------------------------Rule End---------------------------------------");
							break;
						}
					}
				}

				if (outType == XMLStreamReader.END_ELEMENT && "Mapping".equals(xmlStreamReader.getLocalName())) {
					break;
				}
			}
		} catch (XMLStreamException e) {
			e.printStackTrace();
		}
	}

	/**
	 * @Title: main
	 * @Description: TODO
	 * @param args
	 * @throws
	 */
	public static void main(String[] args) {
		XmlHandle.readXml("conf/dnMapping.xml");
	}
}

dnMapping.xml:

<?xml version="1.0" encoding="UTF-8"?>
<Mapping>
	<Rule name="Rule00">
		<SourceObjectClass>FING</SourceObjectClass>
		<DestObjectClass>GgsnFunction</DestObjectClass>
		<ManageObjectClass>3529</ManageObjectClass>
		<SourceObjectDN>PLMN-PLMN/FING-1</SourceObjectDN>
		<DestObjectDN>SubNetwork=XXXXX-1,ManagedElement=FING-1,GgsnFunction=FING-1</DestObjectDN>
	</Rule>
	<Rule name="Rule01">
		<SourceObjectClass>FPIFC</SourceObjectClass>
		<DestObjectClass>EthernetPort</DestObjectClass>
		<ManageObjectClass>3529</ManageObjectClass>
		<SourceObjectDN>PLMN-PLMN/FING-1/FPNODE-1/FPIFC-1</SourceObjectDN>
		<DestObjectDN>SubNetwork=XXXXX-1,EthernetPort=FPNODE-1/FPIFC-1</DestObjectDN>
	</Rule>
	<Rule name="Rule10">
		<SourceObjectClass>FING</SourceObjectClass>
		<DestObjectClass>EpRpDynS5S8Sgw</DestObjectClass>
		<ManageObjectClass>3529</ManageObjectClass>
		<SourceObjectDN>PLMN-PLMN/FING-1</SourceObjectDN>
		<DestObjectDN>SubNetwork=XXXXX-1,ServingGwFunction=FING-1,EpRpDynS5S8Sgw=S5S8-1</DestObjectDN>
	</Rule>
</Mapping>