java出来xml相关API的工具类

package com.cn.xml;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import org.w3c.dom.Document;

public class XMLParseUtil {
	private static final Document document=bulidDocument();  //获得document解析对象
	
	private static final Transformer transformer=buildTransformer();  //获得transformer转换对象
	
	
	private static Document bulidDocument(){
		
		try{
			DocumentBuilderFactory dFactory=DocumentBuilderFactory.newInstance();
			DocumentBuilder dBuilder=dFactory.newDocumentBuilder();
			return dBuilder.newDocument();
		}catch(Throwable ex){
			throw new ExceptionInInitializerError(ex);  
		}
		
	}
	
	public static Document getDocument(){
		return document;
	}
	
	private static Transformer buildTransformer(){
		try{
			TransformerFactory tFactory=TransformerFactory.newInstance();
			return tFactory.newTransformer();
		}catch(Throwable ex){
			throw new ExceptionInInitializerError(ex);  
		}
	}
	
	public static Transformer getTransformer(){
		return transformer;
	}

}package com.cn.xml;
import javax.xml.parsers.Docu