Dom4j解析xml应用使用实例（一）

 

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  [email protected]
 * * @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XML
			Element 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XML
			Element 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"));
		}
	}

}

 

 

                                                                                                          

                                                                                                                                                                                  Author: [email protected]

                                                                         Date: 2012-02-09