dom4j解析带命名空间的xml

需要被解析的xml文件如下：

 1 <?xml version="1.0" encoding="utf-8" ?>

 2 <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"

 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">

 4 <soap:Body>

 5 <GetNewDataResponse xmlns="sobey.com.LBControlService/">

 6 <GetNewDataResult>

 7 <RtnValue>

 8 <ClientState IP="172.21.40.99" LASTTIME="2012-07-06 15:50:58" />

 9 <GenaralInfo DeviceID="470" Status="0" DataCaptureIP="xw-netmanage-2" DataCaptureTime="2012-07-06 15:23:20" >

10  <key> 22 </key>

11  <key> 2 3 </key>

12 </GenaralInfo>

13 <GenaralInfo DeviceID="470" Status="0" DataCaptureIP="xw-netmanage-2" DataCaptureTime="2012-07-06 15:23:22" >

14 <key22> 24 </key22>

15 </GenaralInfo>

16 <GenaralInfo DeviceID="469" Status="0" DataCaptureIP="xw-netmanage-2" DataCaptureTime="2012-07-06 15:24:04" >

17 <key> 55 </key>

18 </GenaralInfo>

19 </RtnValue>

20 </GetNewDataResult>

21 </GetNewDataResponse>

22 </soap:Body>

23 </soap:Envelope>

注意:需要添加包dom4j-1.6.1.jar，jaxen-1.1-beta-9.jar

package src.liweiTest.dom4j;

import java.util.List;

import org.dom4j.Attribute;

import org.dom4j.Document;

import org.dom4j.DocumentException;

import org.dom4j.DocumentHelper;

import org.dom4j.Element;

import org.dom4j.io.SAXReader;



public class TestDom4j

{

    public static void main(String[] args) throws Exception

    {

        System.out.println("test1()***********************************************");

        test1();

        System.out.println("test2()***********************************************");

        test2();

    }



    // 取xml中的域名解析

    public static void test1() throws DocumentException

    {

        SAXReader reader = new SAXReader();

        Document document = reader.read(TestDom4j.class.getResourceAsStream("/result.xml"));

        Element e = document.getRootElement();

        // 取节点名字是GenaralInfo而且其中属性DeviceID=470的元素的集合

        // @DeviceID=470 表示的是属性 local-name()='GenaralInfo'表示的是节点名称 namespace-uri()表示域名空间

        List<Element> list = e.selectNodes("//*[@DeviceID=470 and local-name()='GenaralInfo' and namespace-uri()='sobey.com.LBControlService/']");

        for (Element ee : list)

        {

            // ee.asXML()把Element 元素转换成String

            // System.out.println(ee.asXML());

            // 取得元素中Status属性值为0的子元素的值

            Attribute Status = ee.attribute("Status");

            String StatusValue = Status.getValue();

            if (Status != null)

            {

                if ("0".equals(StatusValue))

                {

                    List<Element> keys = ee.selectNodes(".//*[local-name()='key' and namespace-uri()='sobey.com.LBControlService/']");

                    for (Element key : keys)

                    {

                        System.out.println("key.value is ：" + key.getTextTrim());

                    }

                }

            }

        }

    }



    // 取出xml中的空间名称，并且给域名赋予别名

    public static void test2() throws DocumentException

    {

        SAXReader reader = new SAXReader();

        Document d = reader.read(TestDom4j.class.getResourceAsStream("/result.xml"));

        Document document = DocumentHelper.parseText(d.asXML());

        // ee.asXML()把Element 元素转换成String

        System.out.println(d.asXML());

        Element root = document.getRootElement();

        root.addNamespace("s", "sobey.com.LBControlService/");

        List<Element> list = root.selectNodes("//s:GenaralInfo");

        for (Element e : list)

        {

            // System.out.println(e.asXML());

            // 取得元素中Status属性值为0的子元素的值

            Attribute Status = e.attribute("Status");

            // 获取属性的值

            if (Status != null)

            {

                String StatusValue = Status.getValue();

                if ("0".equals(StatusValue))

                {

                    // e.selectNodes(".//s:key")获取当前节点下元素key的值；e.selectNodes("//s:key")获取所有元素为key的值；记得加“//s:”

                    List<Element> keys = e.selectNodes(".//s:key");

                    for (Element key : keys)

                    {

                        System.out.println("key.value is ：" + key.getTextTrim());

                    }

                }

            }

        }

    }

}