JAVA XML

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"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" +
                "<business id=\"QYTTXXCX\">\n" +
                "<body>\n" +
                "<input>\n" +
                "<title><![CDATA[咖啡]]></title>\n" +
                "</input>\n" +
                "</body>\n" +

"</business>";

package com.bwsk.common.utils;import java.io.IOException;import java.io.StringWriter;import java.text.DecimalFormat;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.Collection;import java.util.Date;import java.util.LinkedHashMap;import java.util.List;import java.util.Map;import org.dom4j.Attribute;import org.dom4j.Document;import org.dom4j.DocumentException;import org.dom4j.DocumentHelper;import org.dom4j.Element;import org.dom4j.io.OutputFormat;import org.dom4j.io.XMLWriter;/** * MAP和XML的相互转换 * @author guodong * */public class MapWithXml {private static final String ATT = "att_";private static final String ROOT_NAME = "business";/** * 将MAP转化为XML * @param mso * @return */public static String mapToXML(Map<String, Object> mso) {Document doc = DocumentHelper.createDocument();doc.setXMLEncoding("gbk");Element root = DocumentHelper.createElement(ROOT_NAME);doc.add(root);SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");DecimalFormat df = new DecimalFormat("0.00####");generateXML(mso, root, sdf, df);OutputFormat format = new OutputFormat();format.setNewLineAfterDeclaration(false);format.setIndentSize(2);format.setNewlines(true);format.setEncoding(doc.getXMLEncoding());StringWriter sw = new StringWriter();XMLWriter xmlW = new XMLWriter(sw, format);try {xmlW.write(doc);xmlW.flush();} catch (IOException ioe) {return doc.asXML();} finally {}return sw.toString();}/** * 递归转换map 怀疑Format类无法内部线程同步，还是不能声明为static,不然恐怕会出莫名其妙错误。在参数中传递避免多次new *  * @param df *            格式化数字 * @param sdf *            格式化日期 */@SuppressWarnings("unchecked")private static void generateXML(Map<String, Object> mso, Element parent, SimpleDateFormat sdf,DecimalFormat df) {for (Map.Entry<String, Object> me : mso.entrySet()) {String key = me.getKey();Object value = me.getValue();if (value instanceof Collection) {for (Map<String, Object> childMap : (Collection<Map<String, Object>>) value) {Element child = DocumentHelper.createElement(key);parent.add(child);generateXML(childMap, child, sdf, df);}} else if (value instanceof Map) {Element child = DocumentHelper.createElement(key);parent.add(child);generateXML((Map<String, Object>) value, child, sdf, df);} else if (key.startsWith(ATT)) {parent.addAttribute(key.substring(ATT.length()), toString(value, sdf, df));} else {Element child = DocumentHelper.createElement(key);parent.add(child);child.setText(toString(value, sdf, df));}}}/** * 在从map变xml时会有从object变为字符串的问题 *  * @param df * @param sdf */private static String toString(Object value, SimpleDateFormat sdf, DecimalFormat df) {if (value instanceof String) {return (String) value;} else if (value == null) {return "";} else if (value instanceof Date) {return sdf.format(value);} else if (value instanceof Integer || value instanceof Long || value instanceof Short|| value instanceof Byte) {return value.toString();} else if (value instanceof Number) {return df.format(value);} else if (value instanceof Boolean) {return Boolean.TRUE.equals(value) ? "1" : "0";} else {return "CONVERT_ERROR";}}/** * 将XML转化为Map * @param xml * @return * @throws DocumentException */@SuppressWarnings("unchecked")public static Map<String, Object> xmlToMap(String xml) throws DocumentException {Map<String, Object> mso = new LinkedHashMap<String, Object>();Document doc = DocumentHelper.parseText(xml);Element root = doc.getRootElement();generateMap(root, mso);return (Map<String, Object>) mso.get(root.getName());}/** * 递归转换节点 */@SuppressWarnings("unchecked")private static void generateMap(Element parent, Map<String, Object> mso) {// 所有元素List<Element> le = parent.elements();// 所有属性List<Attribute> la = parent.attributes();// 属性和元素均为空则代表该元素为类似<returncode>返回代码</returncode>的节点if (le.size() == 0 && la.size() == 0) {mso.put(parent.getName(), parent.getText());return;}// 为下一代节点创建新的mapMap<String, Object> childMap = new LinkedHashMap<String, Object>();// 对类似<group xh="1"></group><group xh="1"></group>重名的集合类型进行处理String parentName = parent.getName();Object alreadyIn = mso.get(parentName);// 若重名多次存储到第二次及以上出现group时if (alreadyIn != null) {// 第二次以上if (alreadyIn instanceof Collection) {((Collection<Map<String, Object>>) alreadyIn).add(childMap);// 第二次} else {Collection<Object> co = new ArrayList<Object>();co.add(alreadyIn);co.add(childMap);mso.put(parentName, co);}// 第一次} else {mso.put(parent.getName(), childMap);}// 处理属性for (Attribute att : la) {childMap.put(att.getName(), att.getValue());}// 递归处理子元素for (Element e : le) {generateMap(e, childMap);}}}

Map map=MapWithXml.xmlToMap(xml);Map inputMap=(Map)((Map)map.get("body")).get("input"); title=(String)inputMap.get("title");

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