Dom4j解析xml应用使用实例（一）
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Dom4j是一个易用的、开源的库，用于XML，XPath和XSLT。它应用于Java平台，采用了Java集合框架并完全支持DOM，SAX和JAXP。??做为解析xml文件 比较好的方式，目前被广泛应用，不多说了，有个简单例子，供参考：
package com.dom.utils;import java.io.File;import java.util.ArrayList;import java.util.HashMap;import java.util.Iterator;import java.util.List;import java.util.Map;import org.dom4j.Document;import org.dom4j.DocumentException;import org.dom4j.DocumentHelper;import org.dom4j.Element;import org.dom4j.io.SAXReader;/** * * @description 解析xml字符串 * * @author liguohu09@gmail.com * * @Date 2012-02-09 */public class Test {public void readStringXml(String xml) {Document doc = null;try { // 读取并解析XML文档// SAXReader就是一个管道，用一个流的方式，把xml文件读出来 // //SAXReader reader = new SAXReader(); // User.hbm.xml表示你要解析的xml文档 ////Document document = reader.read(new File("User.hbm.xml")); // 下面的是通过解析xml字符串的Document document = reader.read(new File("error all.xml")); // 下面的是通过解析xml字符串的doc = DocumentHelper.parseText(xml); // 将字符串转为XMLElement rootElt = doc.getRootElement(); // 获取根节点System.out.println("根节点：" + rootElt.getName()); // 拿到根节点的名称Iterator iter = rootElt.elementIterator("head"); // 获取根节点下的子节点head// 遍历head节点while (iter.hasNext()) {Element recordEle = (Element) iter.next();String title = recordEle.elementTextTrim("title"); // 拿到head节点下的子节点title值System.out.println("title:" + title);Iterator iters = recordEle.elementIterator("script"); // 获取子节点head下的子节点script// 遍历Header节点下的Response节点while (iters.hasNext()) {Element itemEle = (Element) iters.next();String username = itemEle.elementTextTrim("username"); // 拿到head下的子节点script下的字节点username的值String password = itemEle.elementTextTrim("password");System.out.println("username:" + username);System.out.println("password:" + password);}}Iterator iterss = rootElt.elementIterator("body"); // /获取根节点下的子节点body// // 遍历body节点while (iterss.hasNext()) {Element recordEless = (Element) iterss.next();String result = recordEless.elementTextTrim("result"); // 拿到body节点下的子节点result值System.out.println("result:" + result);Iterator itersElIterator = recordEless.elementIterator("form"); // 获取子节点body下的子节点form// 遍历Header节点下的Response节点while (itersElIterator.hasNext()) {Element itemEle = (Element) itersElIterator.next();String banlce = itemEle.elementTextTrim("banlce"); // 拿到body下的子节点form下的字节点banlce的值String subID = itemEle.elementTextTrim("subID");System.out.println("banlce:" + banlce);System.out.println("subID:" + subID);}}} catch (DocumentException e) {e.printStackTrace();} catch (Exception e) {e.printStackTrace();}}/** * * @description 将xml字符串转换成map * @param xml * @return Map */public static List readStringXmlOut(String xml) {//Map map = new HashMap();List errorAll = null;Document doc = null;try {doc = DocumentHelper.parseText(xml); // 将字符串转为XMLElement rootElt = doc.getRootElement(); // 获取根节点System.out.println("根节点：" + rootElt.getName()); // 拿到根节点的名称Iterator iter = rootElt.elementIterator("UniverseInterfaceResult"); // 获取根节点下的子节点UniverseInterfaceResult// // 遍历string节点while (iter.hasNext()) {Element recordEle = (Element) iter.next();String message = recordEle.elementTextTrim("Message"); // 拿到UniverseInterfaceResult节点下的子节点Message值System.out.println("message:" + message);//返回值是success,则不做处理；否则，取所有报错订单信息.if("Failed".equals(message)){//初始化list.errorAll = new ArrayList();Element detailsEle = recordEle.element("Details");// 拿到UniverseInterfaceResult节点下的子节点Details值Iterator iters = detailsEle.elementIterator("ErrorDetail"); // 遍历ErrorDetail节点下的Response节点.while (iters.hasNext()) {Element itemEle = (Element) iters.next();System.out.println("ID:" + itemEle.elementText("Id"));System.out.println("Detail:" + itemEle.elementText("Detail"));Map errorMsg = new HashMap();errorMsg.put("Id", itemEle.elementText("Id")); // 拿到每个Details下的子节点ErrorDetail下的字节点Id的值errorMsg.put("Detail", itemEle.elementText("Detail"));errorAll.add(errorMsg);}}}} catch (DocumentException e) {e.printStackTrace();} catch (Exception e) {e.printStackTrace();}return errorAll;}public static void main(String[] args) { // 下面是需要解析的xml字符串例子 /** String xmlString = "<string xmlns='http://SGMPortal.Universe.QIP/'>"+"<universeinterfaceresult xmlns:xsd='http://www.w3.org/2001/XMLSchema' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>"+"<details></details>"+"<message>Success</message>"+"<totallyfailed>false</totallyfailed>"+"</universeinterfaceresult>" + "</string>";*/ String xmlString = ""+"<string xmlns='http://SGMPortal.Universe.QIP/'>"+"<universeinterfaceresult xmlns:xsd='http://www.w3.org/2001/XMLSchema' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>"+"<details>"+"<errordetail>"+"<id>13A3669B705C2F614825797C0043790F</id>"+"<detailmessage>Error occurred while parsing audit log with Id 13A3669B705C2F614825797C0043790F</detailmessage>"+"<detail>System.FormatException: The string was not recognized as a valid DateTime. There is an unknown word starting at index 20."+"at System.DateTime.Parse(String s)"+"</detail>"+"</errordetail>"+"<errordetail>"+"<id>14F86BD2E7C9C2DE4825797C0043784D</id>"+"<detailmessage>Error occurred while parsing audit log with Id 14F86BD2E7C9C2DE4825797C0043784D</detailmessage>"+"<detail>System.FormatException: The string was not recognized as a valid DateTime. There is an unknown word starting at index 20."+"at System.DateTime.Parse(String s)"+"</errordetail>"+"<errordetail>"+"<id>FAAB4D7FD87B79DB4825797C0042849D</id>"+"<detailmessage>Error occurred while parsing audit log with Id FAAB4D7FD87B79DB4825797C0042849D</detailmessage>"+"<detail>System.FormatException: The string was not recognized as a valid DateTime. There is an unknown word starting at index 20."+"at System.DateTime.Parse(String s)"+"</errordetail>"+"<errordetail>"+"<id>FA24B28DF49BF4634825797C00428263</id>"+"<detailmessage>Error occurred while parsing audit log with Id FA24B28DF49BF4634825797C00428263</detailmessage>"+"<detail>System.FormatException: The string was not recognized as a valid DateTime. There is an unknown word starting at index 20."+"at System.DateTime.Parse(String s)"+"</errordetail>"+"<errordetail>"+"<id>9AE5D97B5FE83D504825797C003BB513</id>"+"<detailmessage>Error occurred while parsing audit log with Id 9AE5D97B5FE83D504825797C003BB513</detailmessage>"+"<detail>System.FormatException: The string was not recognized as a valid DateTime. There is an unknown word starting at index 20."+"at System.DateTime.Parse(String s)"+"</errordetail>"+"<errordetail>"+"<id>75D9D702B5D054714825797C003BB258</id>"+"<detailmessage>Error occurred while parsing audit log with Id 75D9D702B5D054714825797C003BB258</detailmessage>"+"<detail>System.FormatException: The string was not recognized as a valid DateTime. There is an unknown word starting at index 20."+"at System.DateTime.Parse(String s)"+"</errordetail>"+"<errordetail>"+"<id>DAFEAA6924BAD8CB4825797C003BA735</id>"+"<detailmessage>Error occurred while parsing audit log with Id DAFEAA6924BAD8CB4825797C003BA735</detailmessage>"+"<detail>System.FormatException: The string was not recognized as a valid DateTime. There is an unknown word starting at index 20."+"at System.DateTime.Parse(String s)"+"</errordetail>"+"<errordetail>"+"<id>6723D7ACD159BBB04825797C003BA5D1</id>"+"<detailmessage>Error occurred while parsing audit log with Id 6723D7ACD159BBB04825797C003BA5D1</detailmessage>"+"<detail>System.FormatException: The string was not recognized as a valid DateTime. There is an unknown word starting at index 20."+"at System.DateTime.Parse(String s)"+"</errordetail>"+"<errordetail>"+"<id>C8932D9CECFA999C4825797C003BA01D</id>"+"<detailmessage>Error occurred while parsing audit log with Id C8932D9CECFA999C4825797C003BA01D</detailmessage>"+"<detail>System.FormatException: The string was not recognized as a valid DateTime. There is an unknown word starting at index 20."+"at System.DateTime.Parse(String s)"+"</errordetail>"+"<errordetail>"+"<id>21289941B1E8D07B4825797C003B9AF1</id>"+"<detailmessage>Error occurred while parsing audit log with Id 21289941B1E8D07B4825797C003B9AF1</detailmessage>"+"<detail>System.FormatException: The string was not recognized as a valid DateTime. There is an unknown word starting at index 20."+"at System.DateTime.Parse(String s)"+"</errordetail>"+"</details>"+"<message>Failed</message>"+"<totallyfailed>true</totallyfailed>"+"</universeinterfaceresult>"+"</string>";/* * Test2 test = new Test2(); test.readStringXml(xmlString); */List errorAll = readStringXmlOut(xmlString);Iterator iters = errorAll.iterator();while (iters.hasNext()) {Map errorObj = (Map) iters.next();System.out.println("Id{}=" + errorObj.get("Id"));System.out.println("Detail{}=" + errorObj.get("Detail"));}}}?
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??????????????????????????????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????? ?Author: liguohu09@gmail.com
?????????????????????????????????????????????????????????????????????????Date:?2012-02-09
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