DOM解析XML文件实例

<?xml version="1.0"?>
<soap:Envelope
xmlns:soap="http://www.w3.org/2001/12/soap-envelope" soap:encodingStyle="http://www.w3.org/2001/12/soap-encoding">
<soap:Body xmlns:m="http://www.nwpu.edu.cn/soa/xml/test ">
<m:GetWeatherResponse>
<m:Temperature>13.2</m:Temperature>
<m:Weather >sunny</m:Weather >
</m:GetWeatherResponse>
</soap:Body>
</soap:Envelope>

<?xml version="1.0"?>
<soap:Envelope xmlns:soap="http://www.w3.org/2001/12/soap-envelope" soap:encodingStyle="http://www.w3.org/2001/12/soap-encoding">
<soap:Body xmlns:n="http://www.nwpu.edu.cn/soa/xml/test">
<n:GetWeather>
<n:CityName>西安</n:CityName>
</n:GetWeather>
</soap:Body>
</soap:Envelope>

package com.wjy.marshal;
import java.io.File;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

public class GetCityName
{
private String xmlFilePath="C://Documents and Settings/Administrator/桌面/request.xml";
public String getCityName()
{
String result = "";
try {
// step 1: 获得dom解析器工厂（工作的作用是用于创建具体的解析器）
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
//System.out.println("class name: " + dbf.getClass().getName());
// step 2:获得具体的dom解析器
DocumentBuilder db = dbf.newDocumentBuilder();
//System.out.println("class name: " + db.getClass().getName());
// step3: 解析一个xml文档，获得Document对象（根结点）
Document document = db.parse(new File(xmlFilePath));
NodeList nodeList=document.getElementsByTagName("n:GetWeather");
Element element=(Element)nodeList.item(0);
result=element.getElementsByTagName("n:CityName").item(0).getFirstChild().getNodeValue();

} catch (Exception e) {
// TODO: handle exception
}

return result;
}
}

package com.wjy.marshal;
import java.io.File;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

public class GetCityWeather
{
private String xmlFilePath="C://Documents and Settings/Administrator/桌面/response.xml";
public String getCityWeather()
{
String tempurature = "";
String weather="";
try {
// step 1: 获得dom解析器工厂（工作的作用是用于创建具体的解析器）
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
//System.out.println("class name: " + dbf.getClass().getName());
// step 2:获得具体的dom解析器
DocumentBuilder db = dbf.newDocumentBuilder();
//System.out.println("class name: " + db.getClass().getName());
// step3: 解析一个xml文档，获得Document对象（根结点）
Document document = db.parse(new File(xmlFilePath));
NodeList nodeList=document.getElementsByTagName("m:GetWeatherResponse");
Element element=(Element)nodeList.item(0);
tempurature=element.getElementsByTagName("m:Temperature").item(0).getFirstChild().getNodeValue();
weather=element.getElementsByTagName("m:Weather").item(0).getFirstChild().getNodeValue();

System.out.println(tempurature+"    "+weather);
} catch (Exception e) {
// TODO: handle exception
}

return tempurature;
}
}

import com.wjy.marshal.GetCityName;
import com.wjy.marshal.GetCityWeather;

public class zhu {
public static void main(String args[]){
GetCityWeather getCityWeather=new GetCityWeather();
getCityWeather.getCityWeather();

GetCityName getCityName=new GetCityName();
System.out.println(getCityName.getCityName());
}
}