SAX 解析

导入的包：
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.XPath;
import org.dom4j.io.SAXReader;方法：private void readerXml(String filename) {
        SAXReader saxReader = new SAXReader();   
        Document document=null;   
        try{
         URL xmlpath = this.getClass().getClassLoader().getResource(filename);
         document = saxReader.read(xmlpath);
         Map<String,String> nsMap = new HashMap<String,String>();
         nsMap.put("ns","http://www.springframework.org/schema/beans");//加入命名空间
         XPath xsub = document.createXPath("//ns:beans/ns:bean");//创建beans/bean查询路径          xsub.setNamespaceURIs(nsMap);//设置命名空间
         List<Element> beans = xsub.selectNodes(document);//获取文档下所有bean节点 
         for(Element element: beans){
            String id = element.attributeValue("id");//获取id属性值
            String clazz = element.attributeValue("class"); //获取class属性值        
            BeanDefinition beanDefine = new BeanDefinition(id, clazz);
            beanDefines.add(beanDefine);
         }   
        }catch(Exception e){   
            e.printStackTrace();
        }
}
 
xml 文件中：<?xml version="1.0" encoding="UTF-8"?>
<beans   xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
<bean id="emp" class="com.xt.bean.Emp"></bean>     
</beans>异常：Exception in thread "main" java.lang.NoClassDefFoundError: org/jaxen/JaxenException
at org.dom4j.DocumentFactory.createXPath(DocumentFactory.java:230)
at org.dom4j.tree.AbstractNode.createXPath(AbstractNode.java:207)
at com.xt.spring_interior_implement.XtgjClassPathXmlAppliactionContext.readerXml(XtgjClassPathXmlAppliactionContext.java:43)
at com.xt.spring_interior_implement.XtgjClassPathXmlAppliactionContext.<init>(XtgjClassPathXmlAppliactionContext.java:21)
at com.xt.operator.Operator.mn(Operator.java:61)
at com.xt.operator.Operator.main(Operator.java:67)