package com.cdv.test;import java.io.ByteArrayOutputStream;import java.io.File;import java.io.FileWriter;import java.io.IOException;import java.io.StringReader;import javax.xml.parsers.DocumentBuilder;import javax.xml.parsers.DocumentBuilderFactory;import javax.xml.transform.OutputKeys;import javax.xml.transform.Result;import javax.xml.transform.Source;import javax.xml.transform.Transformer;import javax.xml.transform.TransformerFactory;import javax.xml.transform.dom.DOMSource;import javax.xml.transform.stream.StreamResult;import org.dom4j.DocumentException;import org.dom4j.DocumentHelper;import org.dom4j.io.SAXReader;import org.dom4j.io.XMLWriter;import org.jdom2.input.SAXBuilder;import org.jdom2.output.Format;import org.jdom2.output.XMLOutputter;import org.w3c.dom.Document;import org.xml.sax.InputSource;public class XmlKit { /** * dom4j解析xml */ public static org.dom4j.Document xmlTodDocDom4j(String path){ File file = new File(path); org.dom4j.Document doc = null; try { doc = new SAXReader().read(file); } catch (DocumentException e) { e.printStackTrace(); } return doc; } public static String docToString(org.dom4j.Document document){ String xmlStr = document.asXML(); return xmlStr; } public static org.dom4j.Document stringToXmlDom4j(String xmlStr){ org.dom4j.Document doc = null; try { doc = DocumentHelper.parseText(xmlStr); } catch (DocumentException e) { e.printStackTrace(); } return doc; } /** * Document 保存为 XML 文件 * * @param doc Document对象 * @param path 文件路径 */ public static void doc2XMLDom4j(org.dom4j.Document doc, String path) { try { XMLWriter xmlWriter = new XMLWriter(new FileWriter(path)); xmlWriter.write(doc); xmlWriter.flush(); xmlWriter.close(); } catch (Exception e) { return; } } /** * jdom解析xml */ public static org.jdom2.Document xmlTodDocJdom(String path){ File file = new File(path); org.jdom2.Document doc = null; try { doc =new SAXBuilder().build(file); } catch (Exception e) { e.printStackTrace(); } return doc; } public static String docToString(org.jdom2.Document doc){ String xmlStr = ""; Format format = Format.getPrettyFormat(); format.setEncoding("UTF-8");//配置xml文档的字符为gb2312，解决中文问题 XMLOutputter xmlout = new XMLOutputter(format); ByteArrayOutputStream bo = new ByteArrayOutputStream(); try { xmlout.output(doc,bo); } catch (IOException e) { e.printStackTrace(); } xmlStr = bo.toString(); return xmlStr; } public static org.jdom2.Document stringTodDocJdom (String xmlStr){ org.jdom2.Document doc = null; StringReader sr = new StringReader(xmlStr); InputSource is = new InputSource(sr); try { doc =(new SAXBuilder()).build(is); } catch (Exception e) { e.printStackTrace(); } return doc; } /** * DOCUMENT格式化输出保存为XML * * @param doc JDOM的Document * @param filePath 输出文件路径 * @throws Exception */ public static void doc2XML(org.jdom2.Document doc, String filePath) throws Exception{ Format format = Format.getCompactFormat(); format.setEncoding("UTF-8"); //设置XML文件的字符为UTF-8 format.setIndent(" ");//设置缩进 XMLOutputter outputter = new XMLOutputter(format);//定义输出 ,在元素后换行，每一层元素缩排四格 FileWriter writer = new FileWriter(filePath);//输出流 outputter.output(doc, writer); writer.close(); } /** * jdk api解析xml */ public static Document xmlTodDoc(String path){ File file = new File(path); DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder = null; Document doc = null; try { builder = factory.newDocumentBuilder(); doc = builder.parse(file); } catch (Exception e) { e.printStackTrace(); } return doc; } public static String xmlToString(Document doc){ String xmlStr = ""; TransformerFactory tf = TransformerFactory.newInstance(); Transformer t; try { t = tf.newTransformer(); ByteArrayOutputStream bos = new ByteArrayOutputStream(); t.transform(new DOMSource(doc), new StreamResult(bos)); xmlStr = bos.toString(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } return xmlStr; } public static Document stringToXml(String xmlStr){ Document doc = null; StringReader sr = new StringReader(xmlStr); InputSource is = new InputSource(sr); DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder; try { builder = factory.newDocumentBuilder(); doc = builder.parse(is); } catch (Exception e) { e.printStackTrace(); } return doc; } /** * Document 保存为 XML 文件 * * @param doc Document对象 * @param path 文件路径 */ public static void doc2XML(Document doc, String path) { try { Source source = new DOMSource(doc); Result result = new StreamResult(new File(path)); Transformer transformer = TransformerFactory.newInstance().newTransformer(); transformer.setOutputProperty(OutputKeys.INDENT, "yes"); transformer.transform(source, result); } catch (Exception e) { return; } } } dom4J 解析文档
org.dom4j.Element element = doc.getRootElement(); System.out.println(element.getName()); Listiter = element.elements(); for (org.dom4j.Element elem : iter) { System.out.println(elem.getName()); if(elem.getName().equals("HeadInfo")){ System.out.println(elem.attributeValue("PGMVersion")); }; if(elem.getName().equals("PGM")){ List subIter = elem.elements(); for (org.dom4j.Element el : subIter) { System.out.println(el.getName()); System.out.println(el.attributeValue("ItemType")); if(el.attributeValue("ItemType").equals("1")){ List subEl = el.elements(); for (org.dom4j.Element e : subEl) { System.out.println(e.getName()); } } } } }