xml报文与map之间的转换

package com.webservice.util;import java.io.File;import java.io.IOException;import java.io.StringWriter;import java.util.ArrayList;import java.util.HashMap;import java.util.Iterator;import java.util.LinkedHashMap;import java.util.List;import java.util.Map;import net.sf.json.JSON;import net.sf.json.JSONObject;import org.apache.commons.io.FileUtils;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;/** * xml转map，map转xml 带属性 * @author 画一 * */@SuppressWarnings({ "rawtypes", "unchecked" })public class XmlMapUtils {public static void main(String[] args) throws DocumentException, IOException {//String textFromFile = FileUtils.readFileToString(new File("D:/workspace/workspace_3.7/xml2map/src/xml2json/sample.xml"),"UTF-8");//Map<String, Object> map = xml2map(textFromFile, false);//// long begin = System.currentTimeMillis();//// for(int i=0; i<1000; i++){//// map = (Map<String, Object>) xml2mapWithAttr(doc.getRootElement());//// }//// System.out.println("耗时:"+(System.currentTimeMillis()-begin));//JSON json = JSONObject.fromObject(map);//System.out.println(json.toString(1)); // 格式化输出Map<String,Object> map = new HashMap<String, Object>();map.put("q", "");map.put("w", "");map.put("e", "");Document doc = map2xml(map, "root");//Document doc = map2xml(map); //map中含有根节点的键System.out.println(formatXml(doc));}/** * xml转map 不带属性 * @param xmlStr * @param needRootKey 是否需要在返回的map里加根节点键 * @return * @throws DocumentException */public static Map xml2map(String xmlStr, boolean needRootKey) throws DocumentException {Document doc = DocumentHelper.parseText(xmlStr);Element root = doc.getRootElement();Map<String, Object> map = (Map<String, Object>) xml2map(root);if(root.elements().size()==0 && root.attributes().size()==0){return map;}if(needRootKey){//在返回的map里加根节点键（如果需要）Map<String, Object> rootMap = new HashMap<String, Object>();rootMap.put(root.getName(), map);return rootMap;}return map;}/** * xml转map 带属性 * @param xmlStr * @param needRootKey 是否需要在返回的map里加根节点键 * @return * @throws DocumentException */public static Map xml2mapWithAttr(String xmlStr, boolean needRootKey) throws DocumentException {Document doc = DocumentHelper.parseText(xmlStr);Element root = doc.getRootElement();Map<String, Object> map = (Map<String, Object>) xml2mapWithAttr(root);if(root.elements().size()==0 && root.attributes().size()==0){return map; //根节点只有一个文本内容}if(needRootKey){//在返回的map里加根节点键（如果需要）Map<String, Object> rootMap = new HashMap<String, Object>();rootMap.put(root.getName(), map);return rootMap;}return map;}/** * xml转map 不带属性 * @param e * @return */private static Map xml2map(Element e) {Map map = new LinkedHashMap();List list = e.elements();if (list.size() > 0) {for (int i = 0; i < list.size(); i++) {Element iter = (Element) list.get(i);List mapList = new ArrayList();if (iter.elements().size() > 0) {Map m = xml2map(iter);if (map.get(iter.getName()) != null) {Object obj = map.get(iter.getName());if (!(obj instanceof List)) {mapList = new ArrayList();mapList.add(obj);mapList.add(m);}if (obj instanceof List) {mapList = (List) obj;mapList.add(m);}map.put(iter.getName(), mapList);} elsemap.put(iter.getName(), m);} else {if (map.get(iter.getName()) != null) {Object obj = map.get(iter.getName());if (!(obj instanceof List)) {mapList = new ArrayList();mapList.add(obj);mapList.add(iter.getText());}if (obj instanceof List) {mapList = (List) obj;mapList.add(iter.getText());}map.put(iter.getName(), mapList);} elsemap.put(iter.getName(), iter.getText());}}} elsemap.put(e.getName(), e.getText());return map;}/** * xml转map 带属性 * @param e * @return */private static Map xml2mapWithAttr(Element element) {Map<String, Object> map = new LinkedHashMap<String, Object>();List<Element> list = element.elements();List<Attribute> listAttr0 = element.attributes(); // 当前节点的所有属性的listfor (Attribute attr : listAttr0) {map.put("@" + attr.getName(), attr.getValue());}if (list.size() > 0) {for (int i = 0; i < list.size(); i++) {Element iter = list.get(i);List mapList = new ArrayList();if (iter.elements().size() > 0) {Map m = xml2mapWithAttr(iter);if (map.get(iter.getName()) != null) {Object obj = map.get(iter.getName());if (!(obj instanceof List)) {mapList = new ArrayList();mapList.add(obj);mapList.add(m);}if (obj instanceof List) {mapList = (List) obj;mapList.add(m);}map.put(iter.getName(), mapList);} elsemap.put(iter.getName(), m);} else {List<Attribute> listAttr = iter.attributes(); // 当前节点的所有属性的listMap<String, Object> attrMap = null;boolean hasAttributes = false;if (listAttr.size() > 0) {hasAttributes = true;attrMap = new LinkedHashMap<String, Object>();for (Attribute attr : listAttr) {attrMap.put("@" + attr.getName(), attr.getValue());}}if (map.get(iter.getName()) != null) {Object obj = map.get(iter.getName());if (!(obj instanceof List)) {mapList = new ArrayList();mapList.add(obj);// mapList.add(iter.getText());if (hasAttributes) {attrMap.put("#text", iter.getText());mapList.add(attrMap);} else {mapList.add(iter.getText());}}if (obj instanceof List) {mapList = (List) obj;// mapList.add(iter.getText());if (hasAttributes) {attrMap.put("#text", iter.getText());mapList.add(attrMap);} else {mapList.add(iter.getText());}}map.put(iter.getName(), mapList);} else {// map.put(iter.getName(), iter.getText());if (hasAttributes) {attrMap.put("#text", iter.getText());map.put(iter.getName(), attrMap);} else {map.put(iter.getName(), iter.getText());}}}}} else {// 根节点的if (listAttr0.size() > 0) {map.put("#text", element.getText());} else {map.put(element.getName(), element.getText());}}return map;}/** * map转xml map中没有根节点的键 * @param map * @param rootName * @throws DocumentException * @throws IOException */public static Document map2xml(Map<String, Object> map, String rootName) throws DocumentException, IOException  {Document doc = DocumentHelper.createDocument();        Element root = DocumentHelper.createElement(rootName);        doc.add(root);        map2xml(map, root);        //System.out.println(doc.asXML());        //System.out.println(formatXml(doc));        return doc;}/** * map转xml map中含有根节点的键 * @param map * @throws DocumentException * @throws IOException */public static Document map2xml(Map<String, Object> map) throws DocumentException, IOException  {Iterator<Map.Entry<String, Object>> entries = map.entrySet().iterator();if(entries.hasNext()){ //获取第一个键创建根节点Map.Entry<String, Object> entry = entries.next();Document doc = DocumentHelper.createDocument();        Element root = DocumentHelper.createElement(entry.getKey());        doc.add(root);        map2xml((Map)entry.getValue(), root);        //System.out.println(doc.asXML());        //System.out.println(formatXml(doc));        return doc;}return null;}/** * map转xml * @param map * @param body xml元素 * @return */private static Element map2xml(Map<String, Object> map, Element body) {Iterator<Map.Entry<String, Object>> entries = map.entrySet().iterator();while (entries.hasNext()) {Map.Entry<String, Object> entry = entries.next();String key = entry.getKey();Object value = entry.getValue();if(key.startsWith("@")){//属性body.addAttribute(key.substring(1, key.length()), value.toString());} else if(key.equals("#text")){//有属性时的文本body.setText(value.toString());} else {if(value instanceof java.util.List ){List list = (List)value;Object obj;for(int i=0; i<list.size(); i++){obj = list.get(i);//list里是map或String，不会存在list里直接是list的，if(obj instanceof java.util.Map){Element subElement = body.addElement(key);map2xml((Map)list.get(i), subElement);} else {body.addElement(key).setText((String)list.get(i));}}} else if(value instanceof java.util.Map ){Element subElement = body.addElement(key);map2xml((Map)value, subElement);} else {body.addElement(key).setText(value.toString());}}//System.out.println("Key = " + entry.getKey() + ", Value = " + entry.getValue());}return body;}/** * 格式化输出xml * @param xmlStr * @return * @throws DocumentException * @throws IOException */public static String formatXml(String xmlStr) throws DocumentException, IOException  {Document document = DocumentHelper.parseText(xmlStr);return formatXml(document);}/** * 格式化输出xml * @param document * @return * @throws DocumentException * @throws IOException */public static String formatXml(Document document) throws DocumentException, IOException  {// 格式化输出格式OutputFormat format = OutputFormat.createPrettyPrint();//format.setEncoding("UTF-8");StringWriter writer = new StringWriter();// 格式化输出流XMLWriter xmlWriter = new XMLWriter(writer, format);document.getRootElement().asXML();// 将document写入到输出流xmlWriter.write(document);xmlWriter.close();return writer.toString();}}