XML字符串转Map和Map转XML

XML转Map方法一：

方法二：
  public static Map<String, String> readStringXmlOut(String xml) {
        Map<String, String> map = new HashMap<String, String>();
        Document doc = null;
        try {
            doc = DocumentHelper.parseText(xml); // 将字符串转为XML
            Element rootElt = doc.getRootElement(); // 获取根节点
            @SuppressWarnings("unchecked")
            List<Element> list = rootElt.elements();// 获取根节点下所有节点
            for (Element element : list) { // 遍历节点
                map.put(element.getName(), element.getText()); // 节点的name为map的key，text为map的value
            }
        } catch (DocumentException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return map;
    } 

public static Map<String, String> readStringXml(String xml) throws DocumentException { Document doc = DocumentHelper.parseText(xml); Element books = doc.getRootElement(); System.out.println("rootNode:" + books.getName()); Iterator Elements = books.elementIterator(); Map<String, String> map = new HashMap<>(); while (Elements.hasNext()) { Element user = (Element) Elements.next(); System.out.println("node=" + user.getName() + "\ttext=" + user.getText()); map.put(user.getName(), user.getText()); } return map; }

/** * xml转map工具类 */ public class XmlToMapUtil { /** * 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); } else map.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); } else map.put(iter.getName(), iter.getText()); } } } else map.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list for (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); } else map.put(iter.getName(), m); } else { List<Attribute> listAttr = iter.attributes(); // 当前节点的所有属性的list Map<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 document2 * @return * @throws DocumentException * @throws IOException */ public static String formatXml(String xmlStr) throws Exception { org.dom4j.Document document = DocumentHelper.parseText(xmlStr); return formatXml1(document); } /** * 格式化输出xml * @param document * @return * @throws DocumentException * @throws IOException */ public static String formatXml1(Document document) throws Exception { // 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); // 将document写入到输出流  xmlWriter.write(document); xmlWriter.close(); return writer.toString(); } }