第一次使用dom4j

dom4j download

http://www.dom4j.org/dom4j-1.6.1/

用myeclipse创建工程Prj_XML，导入dom4j-1.6.1.jar文件

1.定义一个xml文档User.hbm.xml

<hibernate-mapping>
 <class name="com.chao.User" table="t_user">
  <property name="username"></property>
  <property name="password"></property>
 </class>
</hibernate-mapping>

2.新建一个java文件com.chao.dom4j.DOM4JTest.java

public class DOM4JTest {

public static void main(String[] args) {

//1.从文件读取XML

SAXReader reader = new SAXReader();

Document document = null;

try {

document = reader.read(new File("User.hbm.xml"));

} catch (DocumentException e) {

e.printStackTrace();

}

//2.取得root节点

Element rootElement = document.getRootElement();

p(rootElement.getName());

//3.遍历XML树

for (Iterator i = rootElement.elementIterator(); i.hasNext();){

Element element = (Element) i.next();

p(element.getName());

for(Iterator j = element.attributeIterator(); j.hasNext();) {

Attribute attribute = (Attribute) j.next();

p(attribute.getName() + "-------" + attribute.getValue());

}

}

}

public static void p(Object o) {

System.out.println(o);

}

}

3.运行结果

hibernate-mapping

class

name-------com.chao.User

table-------t_user