dom4jutil.java

spring+hibernate+struts 范例代码

package com.common.util;

import java.io.File;
import java.io.FileWriter;
import java.net.MalformedURLException;

import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamSource;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentFactory;
import org.dom4j.Element;
import org.dom4j.io.DOMReader;
import org.dom4j.io.DOMWriter;
import org.dom4j.io.DocumentResult;
import org.dom4j.io.DocumentSource;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;

public class Dom4jUtil {

	/**
	 * @param args
	 */
	/**
	 * 
	 * 格式化XML文档,并解决中文问题
	 * 
	 * @param filename
	 * 
	 * @return
	 * 
	 */

	public static boolean formatXMLFile(String filename) {

		try {

			Document document = readXML(filename);

			XMLWriter writer = null;

			/** 格式化输出,类型IE浏览一样 */

			OutputFormat format = OutputFormat.createPrettyPrint();

			/** 指定XML编码 */

			format.setEncoding("GBK");

			writer = new XMLWriter(new FileWriter(new File(filename)), format);

			writer.write(document);

			writer.close();
			System.out.println("执行成功!");

			/** 执行成功,需返回1 */

			return true;

		} catch (Exception ex) {

			ex.printStackTrace();
			return false;

		}

	}

	// 从文件读取XML，输入文件名，返回XML文档
	public static Document readXML(String fileName)
			throws MalformedURLException, DocumentException {

		SAXReader reader = new SAXReader();

		Document document = reader.read(new File(fileName));

		return document;

	}

	// 取得Root节点
	public static Element getRootElement(Document doc) {

		return doc.getRootElement();

	}

	// 用XSLT转换XML
	public static Document styleDocument(Document document, String stylesheet)
			throws Exception {

		// load the transformer using JAXP

		TransformerFactory factory = TransformerFactory.newInstance();

		Transformer transformer = factory.newTransformer(new StreamSource(
				stylesheet)

		);

		// now lets style the given document

		DocumentSource source = new DocumentSource(document);

		DocumentResult result = new DocumentResult();

		transformer.transform(source, result);

		// return the transformed document

		Document transformedDoc = result.getDocument();

		return transformedDoc;

	}

	/** 转换 W3C DOM document 为 dom4j document */
	public static Document buildDocment(org.w3c.dom.Document domDocument) {
		DOMReader xmlReader = new DOMReader();
		return xmlReader.read(domDocument);
	}

	public static org.w3c.dom.Document transformtoDOM(Document doc) throws Exception {

		DOMWriter writer = new DOMWriter();
		
		return writer.write(doc);
	}

	// 创建一个带有ROOT的Document
	public Document getDocByRoots(String rootString) {
		Document document = DocumentFactory.getInstance().createDocument();
		Element root = document.addElement(rootString);
		return document;

	}

}