java 操作xml

package dataModule;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
//下面主要是org.xml.sax包的类
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

public class Xml {
String property="";
    public String getProperty() {
return property;
}
public void setProperty(String property) {
this.property = property;
}
public ArrayList getXml(String path){
    ArrayList al = new ArrayList();
   
        //（1）得到DOM解析器的工厂实例
        DocumentBuilderFactory domfac=DocumentBuilderFactory.newInstance();
        //得到javax.xml.parsers.DocumentBuilderFactory;类的实例就是我们要的解析器工厂
        try {
            //（2）从DOM工厂获得DOM解析器
            DocumentBuilder dombuilder=domfac.newDocumentBuilder();
            //通过javax.xml.parsers.DocumentBuilderFactory实例的静态方法newDocumentBuilder()得到DOM解析器
            //（3）把要解析的XML文档转化为输入流，以便DOM解析器解析它
            InputStream is=new FileInputStream(path);           
            //（4）解析XML文档的输入流，得到一个Document
            Document doc=dombuilder.parse(is);
            //由XML文档的输入流得到一个org.w3c.dom.Document对象，以后的处理都是对Document对象进行的
            //（5）得到XML文档的根节点
            Element root=doc.getDocumentElement();
            //在DOM中只有根节点是一个org.w3c.dom.Element对象。
            //（6）得到节点的子节点
            NodeList estate=root.getChildNodes();
           
            if(estate!=null){
                for(int i=0;i<estate.getLength();i++){
                    Node city=estate.item(i);
                    if(city.getNodeType()==Node.ELEMENT_NODE){
                        //（7）取得节点的属性值
                        String cityname=city.getAttributes().getNamedItem("cityname").getNodeValue();
                       
                        //注意，节点的属性也是它的子节点。它的节点类型也是Node.ELEMENT_NODE
                        //（8）轮循子节点
                       
                        for(Node node=city.getFirstChild();node!=null;node=node.getNextSibling()){
                        Xml xml =new Xml();
                            if(node.getNodeType()==Node.ELEMENT_NODE){
                                if(node.getNodeName().equals("property1")){
                                   
                                property=node.getFirstChild().getNodeValue();
//                                 
                                   
                                }
                                if(node.getNodeName().equals("property2")){
                                     property=node.getFirstChild().getNodeValue();
                                  
                                   
                                }
                                if(node.getNodeName().equals("property3")){
                                property=node.getFirstChild().getNodeValue();
                                   
                                   
                                }
                                if(node.getNodeName().equals("property4")){
                                    property=node.getFirstChild().getNodeValue();
                                   
                                   
                                }
                                if(node.getNodeName().equals("property5")){
                                     property=node.getFirstChild().getNodeValue();
                                   
                                   
                                }
                                xml.setProperty(property);
                                al.add(xml);
                               
                                }
                        }
                    }
                }//（6）这是用一个org.w3c.dom.NodeList接口来存放它所有子节点的，还有一种轮循子节点的方法，后面有介绍
            }
        } catch (ParserConfigurationException e) {
            e.printStackTrace();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (SAXException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
return al;

    }

  
 
}


xml文件
<?xml version="1.0" encoding="GB2312" standalone="no"?>
<estate>
    <city cityname="chongqing">
        <property1>CQ15-P000123291</property1>
        <property2>CQ62-P000095732</property2>
        <property3>CQ41-P000101178</property3>
        <property4>CQ58-P000077181</property4>
       
    </city>
</estate>

调用
Xml xml =  new Xml();
ArrayList al = xml.getXml(path);
      int alRows = al.size();
for(int i=0;i<alRows;i++){
Xml xml1 = (Xml)al.get(i);
.........
}