GZ/nwyj/.svn/pristine/e2/e20a881b90907a043a8c4940bb0480c778e10340.svn-base

package com.sinosoft.cm.util;

import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import org.apache.log4j.Logger;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;

/**
 * 
 * <p>
 * 描述:xml工具类
 * </p>
 * <p>
 * author: liuyuliang
 * </p>
 * <p>
 * filename: XmlUtil.java
 * </p>
 * <p>
 * createDate: 2015年9月25日下午5:55:54
 * </p>
 *
 *
 */
public class XmlUtil {
	private final Logger log = Logger.getLogger(getClass()); 

	/**
	 * XML格式化
	 * 
	 * @param retStr
	 * @return
	 * @throws Exception
	 */
	public static String formatXML(String retStr) throws Exception {
		String res = null;
		Document doc = null;
		try {
			doc = DocumentHelper.parseText(retStr);
		} catch (DocumentException e) {
			e.printStackTrace();
			return null;
		}
		// Element root = doc.getRootElement();
		// 格式化XML
		OutputFormat format = new OutputFormat();
		// 设置元素是否有子节点都输出
		format.setExpandEmptyElements(true);
		// 设置不输出XML声明
		format.setSuppressDeclaration(false);
		// format.setNewlines(true);
		format.setIndent(true);
		// format.setEncoding("gbk");
		OutputStream outputStream = new ByteArrayOutputStream();
		XMLWriter writer = new XMLWriter(outputStream, format);
		writer.write(doc);
		writer.close();
		res = outputStream.toString();
		return res;
	}

	/**
	 * 字符串转为Document对象
	 * 
	 * @param xml
	 * @return
	 */
	public static Document strToXMLDocument(String xml) {
		Document document = null;
		try {
			document = DocumentHelper.parseText(xml);
		} catch (DocumentException e) {
			e.printStackTrace();
		}
		return document;

	}

	/**
	 * 将document对象转为xml字符串
	 * 
	 * @param document
	 *            对象
	 * @return xml字符串
	 */
	public static String XMLDocumentToStr(Document document) {
		return document.asXML();
	}

	/**
	 * 通过xml文件名读取到Document对象
	 * 
	 * @param filename
	 * @return
	 */
	public static Document getDocument(String filename) {
		Document document = null;
		try {
			document = DocumentHelper.parseText(XmlUtil.getXmlFromFile(filename));
		} catch (DocumentException e) {
			e.printStackTrace();
		}
		return document;
	}

	/**
	 * 读取xml文件内容
	 * 
	 * @param path
	 *            文件路径
	 * @return
	 */
	private static String getXmlFromFile(String path) {
		String retStr = null;
		InputStream in;
		try {
			String s_xmlpath = path;
			ClassLoader classLoader = XmlUtil.class.getClassLoader();
			in = classLoader.getResourceAsStream(s_xmlpath);

			// in = new FileInputStream(path);

			BufferedInputStream bis = null;
			bis = new BufferedInputStream(in);
			byte[] bret;

			bret = new byte[bis.available()];
			bis.read(bret);
			retStr = new String(bret, "UTF-8");
		} catch (FileNotFoundException e1) {
			e1.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return retStr;
	}

	/**
	 * 读取xml文件
	 * 
	 * @param filePath
	 * @return document 对象
	 */
	public static Document getDocument2(String filePath) {
		File file = new File(filePath);
		SAXReader reader = new SAXReader();
		Document document = null;
		try {
			document = reader.read(file);
		} catch (DocumentException e) {
			
			e.printStackTrace();
		}
		return document;
	}
}