DOM4J解析XML文件

DOM4J

基于树形结构，第三方组件，效率更高，使用的Java中的迭代器实现数据读取，在web框架中使用较多（Hibernate）。

代码示例

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.junit.Test;

import java.io.InputStream;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class DOM4JXmlDemo {
	@Test
	public void dom4jXmlParse() throws DocumentException {
	    //1. 创建DOM4J解析器对象
	    SAXReader reader = new SAXReader();
	    InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream("xml/person.xml");

	    Document doc = reader.read(is);
	    Element rootElement = doc.getRootElement();
	    Iterator<Element> iter1 = rootElement.elementIterator();

	    List<Person> persons = new ArrayList<>();
	    Person person = null;

	    while (iter1.hasNext()) {
	        person = new Person();
	        Element element = iter1.next();
	        person.setPersonId(element.attributeValue("personId"));

	        Iterator<Element> iter2 = element.elementIterator();
	        while (iter2.hasNext()) {
	            Element next = iter2.next();
	            String tag = next.getName();
	            if ("name".equals(tag)) {
	                person.setName(next.getText());
	            } else if ("address".equals(tag)) {
	                person.setAddress(next.getText());
	            } else if ("tel".equals(tag)) {
	                person.setTel(next.getText());
	            } else if ("fax".equals(tag)) {
	                person.setFax(next.getText());
	            } else if ("email".equals(tag)) {
	                person.setEmail(next.getText());
	            }
	        }
	        persons.add(person);
	    }
	    for (Person p : persons) {
	        System.out.println(p);
	    }
	}
}	

person.xml文件内容

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

	<person personId="E01">
	    <name>Tony Blair</name>
	    <address>10 Download Street,London UK</address>
	    <tel>010-2586984</tel>
	    <fax>010-4567787</fax>
	    <email>blair@everywhere.com</email>
	</person>

	<person personId="E02">
	    <name>Json</name>
	    <address>10 Download Street,New York US</address>
	    <tel>010-2586484</tel>
	    <fax>010-4872127</fax>
	    <email>json@everywhere.com</email>
	</person>

</people>