JavaEE_DOM

最新推荐文章于 2020-12-23 20:28:29 发布

IparhanGeek

最新推荐文章于 2020-12-23 20:28:29 发布

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Today`s Famaous quotes here : Successful people often change their methods instead of goals.

XML parser ：

1.DOM,SAX,JDOM,DOM4J.

The First DOM (Document Object Model) ,Lets Start:

JavaCode :

package test;

import java.io.File;
import org.w3c.dom.*;
import javax.xml.parsers.*;

public class DOMReader{
	public static void main(String[] args) {
		try{
			//This file name
			File file = new File("pathName");
			//get the factory of bulider
			DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
			//Create bulider
			DocumentBuilder builder = factory.newDocumentBuilder();
			//start parse this file 
			Document document = (Document) builder.parse(file);
			//Obtained by name 
			NodeList nl = document.getElementsByTagName("VALUE");
			//There are many Byte and data  so have to  for
					for(int i =0;i<nl.getLength();i++){
						System.out.println("Massage one" + document.getElementsByTagName("NO").item(i)
								.getFirstChild().getNodeValue());
					}
		}catch(Exception e){
			e.printStackTrace();
		}
	}
}

2.Attributes :    Document, Element,node, nodeList,attribute ,comment these are sex Attributes about DOM parser.

3.Level : NO.1 DOM , NO.2 DOM , NO.3 DOM these are about time.

4.Methods : getElementById();   &    getElementByTagName();

5.Attributes :parentNode、firstChild and lastChild.

Note :1. DOM(Document Object Model ) will waste memory . So i support use SAX or other parser.

Iparhan_Java 2016-6-23   GoodLuck!