創建解析XML文件的三種解析方法（三）

用dom4j解析

package dom4j;

 

import java.io.File;

import java.io.FileWriter;

import java.util.Iterator;

import java.util.List;

import java.util.Random;

 

import org.dom4j.Document;

import org.dom4j.DocumentHelper;

import org.dom4j.Element;

import org.dom4j.io.OutputFormat;

import org.dom4j.io.SAXReader;

import org.dom4j.io.XMLWriter;

 

publicclass dom4j {

    privatestatic String xmlpath = "dom4j.xml";

   

    publicstaticvoid main(String[] args)throws Exception{

       //createXml();

       resolving();

    }

   

    publicstaticvoid createXml() throws Exception{

       //創建document對象

       Document document = DocumentHelper.createDocument();

       //創建根節點

       Element root = DocumentHelper.createElement("studnets");

       //將根節點添加到document對象中

       document.setRootElement(root);

       for(int i = 0 ;i < 20 ; i++){

           //創建根元素節點並將根元素節點添加到根節點中

           Element student = root.addElement("student");

           //設置根元素節點的值

           //聲明參數ID

           String id ="";

           //循環生成一個9爲的隨機ID數

           for(int j = 0; j< 9 ; j ++ ){

              id += new Random().nextInt(8)+1;

           }

           student.addAttribute("id",id);

           //創建元素節點並將元素節點添加到根元素節點中

           Element name = student.addElement("name");

           Element sex = student.addElement("sex");

           Element age = student.addElement("age");

           Element phone = student.addElement("phone");

           //聲明一個姓名的數組

           String nameList[] = {"呂布","趙雲","馬超","張飛","關羽","許褚","孫策","周瑜","夏侯淵","張頜","于禁","黃忠","典韋","曹仁","程普"};   

           String sexList[] = {"男","女"};

           //設置元素節點的文本值

           name.setText(nameList[new Random().nextInt(nameList.length)]);

           sex.setText(sexList[new Random().nextInt(sexList.length)]);

           age.setText(new Random().nextInt(20)+20+"");

           String tel ="";

           for(int k = 0; k< 7 ; k++ ){

              tel += new Random().nextInt(9);

           }

           phone.setText("0756-"+tel);

       }

       //設置XML文件輸出的格式

       OutputFormat format = new OutputFormat("\t", true);

       format.setEncoding("utf-8");

       XMLWriter xmlWriter = new XMLWriter(new FileWriter(xmlpath), format);

       //輸出XML文件

       xmlWriter.write(document);

       xmlWriter.close();

    }

   

    //解析XML文件

    @SuppressWarnings("rawtypes")

    publicstaticvoid resolving() throws Exception{

       //獲取XML解析器

       SAXReader saxReader = new SAXReader();

       //獲取document對象

       Document document = saxReader.read(new File(xmlpath));

       //獲取根節點

       Element root = document.getRootElement();

       //獲取根元素節點

       List chindList = root.elements();

       //循環獲取元素文本值，第一種方法

       for(Iterator iter = chindList.iterator(); iter.hasNext();){

           Element student =(Element)iter.next();

           System.out.println("id = "+student.attributeValue("id")+"   name = "

           +student.elementText("name")+"   sex = "

           +student.elementText("sex")+"   age = "

           +student.elementText("age")+"   phone = "

           +student.elementText("phone"));

       }

    System.err.println("\n---------------------------------------------------------------------");

       //循環獲取元素文本值，第二種方法

       for(int i = 0 ; i< chindList.size() ; i++ ){

           Element student = (Element)chindList.get(i);

           System.out.println("id = "+student.attributeValue("id")+"   name = "

           +student.elementText("name")+"   sex = "

           +student.elementText("sex")+"   age = "

           +student.elementText("age")+"   phone = "

           +student.elementText("phone"));

       }

    }

}