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xml按照节点排序
package swing;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
public class XmlMapUtil{
/**
* 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 TreeMap<>(new Comparator<String>() {
@Override
public int compare(String o1, String o2) {
return o1.compareTo(o2);
}
});
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 TreeMap<>(new Comparator<String>() {
@Override
public int compare(String o1, String o2) {
return o1.compareTo(o2);
}
});
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;
}
/**
* 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) {
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
* @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;
}
}
调用:
Map map1 = XmlMapUtil.xml2map("xml字符串", false);
Document doc11 = XmlMapUtil.map2xml(map1, "root");