import java.io.File;import javax.xml.parsers.DocumentBuilder;import javax.xml.parsers.DocumentBuilderFactory;import org.w3c.dom.Document;import org.w3c.dom.NodeList;/** *  * @author D_xiao * */public class AnalysisXmlByDom {	/**	 * 功能            ：通过dom的方法解析文档，得到子节点内容	 * 参数           :url:文档路径 ; rootElemnt:xml文件根节点; childElement:子节点	 * return :子节点内容	 * */	public String dom(String url,String rootElement,String clildElement){		String child = null;		try{			 File f=new File(url); 			 DocumentBuilderFactory factory=DocumentBuilderFactory.newInstance(); 			 DocumentBuilder builder=factory.newDocumentBuilder(); 			 Document doc = builder.parse(f); 			 NodeList nl = doc.getElementsByTagName(rootElement); 			 for (int i=0;i<nl.getLength();i++){ 				 child = doc.getElementsByTagName(clildElement).item(i).getFirstChild().getNodeValue(); 			 } 		 }catch(Exception e){ 			 e.printStackTrace(); 		 }		return child;	}	public static void main(String[] args) {		AnalysisXmlByJdom dom = new AnalysisXmlByJdom();		String a = dom.dom("src/first.xml", "value", "no");		System.out.println(a);	}}

import java.io.File;import java.util.Iterator;import org.dom4j.Document;import org.dom4j.Element;import org.dom4j.io.SAXReader;public class AnalysisXmlByDom4j {	/**	 * 功能            ：通过jdom的方法解析文档，得到子节点内容	 * 参数           :url:文档路径 ; rootElemnt:xml文件根节点; childElement:子节点	 * return :子节点内容	 * */     	public String dom4j(String url,String clildElement){		String child = null;		try { 			//使用SAX方式解析xml			SAXReader saxReader = new SAXReader();			//读取first.xml资源			Document doc = saxReader.read(new File(url));			//取得根节点			Element root = doc.getRootElement();			Element foo; 			//遍历根节点的所有孩子节点			for (Iterator i = root.elementIterator(); i.hasNext();){ 				foo = (Element) i.next(); 				child = foo.elementText(clildElement); 			}		} catch (Exception e) { 			e.printStackTrace(); 		} 		return child;	}	public static void main(String[] args) {		AnalysisXmlByJdom dom4j = new AnalysisXmlByJdom();		String a = jdom4j.jdom4j("src/first.xml", "value", "no");		System.out.println(a);	}}

import java.io.File;import java.util.List;import org.jdom.Document;import org.jdom.Element;import org.jdom.input.SAXBuilder;public class AnalysisXmlByJdom {	/**	 * 功能            ：通过jdom的方法解析文档，得到子节点内容	 * 参数           :url:文档路径 ; rootElemnt:xml文件根节点; childElement:子节点	 * return :子节点内容	 * */	public String jdom(String url,String rootElement,String childElement){		String child = null;		try { 			//创建一个SAXBudilder对象			SAXBuilder builder = new SAXBuilder();			//读取first.xml资源			Document doc = builder.build(new File(url));			//获取根元素			Element foo = doc.getRootElement(); 			//获取根元素下面所有的子元素			List<Element> allChildren = foo.getChildren(rootElement); 			for(int i=0;i<allChildren.size();i++) { 				child = (allChildren.get(i)).getChild(childElement).getText();			} 		} catch (Exception e) { 			e.printStackTrace(); 		}		return child;	}		/**	 * 测试	 * @param args	 */	public static void main(String[] args) {		AnalysisXmlByJdom jdom = new AnalysisXmlByJdom();		String a = jdom.jdom("src/first.xml", "value", "no");		System.out.println(a);	}}