XML工具类

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.jdom.output.Format;
import org.jdom.output.XMLOutputter;

/**
 * XML工具类
 * @author LXY
 *
 */
public class XMLUtil {
	/**
	 * 根据xml路径得到rootElement
	 * @param xmlPath
	 * @return
	 * @throws IOException 
	 */
	public static Element getXMLRoot(InputStream in) throws IOException {
		SAXBuilder builder = new SAXBuilder();
		Document doc = null;
		Element root = null;
		try {
			doc = builder.build(in);
			root = doc.getRootElement();
		} catch (JDOMException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}finally{
			in.close();
		}
		return root;
	}
	
	/**
	 * 根据xml路径得到rootElement 重载方法
	 * @param xmlPath
	 * @return
	 * @throws IOException 
	 */
	public static Element getXMLRoot(String xmlPath)  {
		SAXBuilder builder = new SAXBuilder();
		FileInputStream in = null;
		Document doc = null;
		Element root = null;
		try {
			in = new FileInputStream(new File(xmlPath));
			doc = builder.build(in);
			root = doc.getRootElement();
		} catch (JDOMException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				if(in != null) {
					in.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		return root;
	}
	
	/**
	 * 根据xml文档对象Docuemnt生成xml文件到指定路径
	 * @param doc
	 * @param xmlPath
	 */
	public static void createXML(Document doc, String xmlPath) throws Exception{
		XMLOutputter outputter = null; 
	    Format format = Format.getCompactFormat(); 
	    format.setEncoding("UTF-8"); 
	    format.setIndent("    "); 
	    outputter = new XMLOutputter(format); 
	    FileOutputStream out = null;
		try {
			out = new FileOutputStream(xmlPath);
			outputter.output(doc, out);
		} catch (FileNotFoundException e) {
			e.printStackTrace();
			throw e;
		} catch (IOException e) {
			e.printStackTrace();
			throw e;
		} finally {
			if(out != null)  {
				out.close();
			}
		}
	}
}