Xml格式数据转map工具类
前言【
最近在写一个业务,由于调UPS物流的接口返回的是一个xml格式的数据结果,我现在要拿到xml中某个节点的值,而这个xml数据是多节点多层级的,并且这某个节点的值有可能只有一条值,有可能有多条,如下:
大概是这样的结构:为了简要,我做简单显示,真正的结构层级跟这差不多
- <class>
- <student>
- <name>aaaaaa</name>
- <girlfriend>bbb</girlfriend>
- <girlfriend>ccc</girlfriend>
- </student>
- </class>
- >>>>由于girlfriend的值是不确定的,有可能一个,或多个>>>>
- <class>
- <student>
- <name>aaaaaa</name>
- <girlfriend>bbb</girlfriend>
- </student>
- </class>
- //现在要把当前xml转成map,并且还要遍历map,拿到girlfriend的值,于girlfriend的值有可能是多个
//所以当xml中的节点girlfriend的值不同时,我们都要解析成多层级的map,并拿到girlfriend的值
】
网上百度了很久,终于找到一位大神写的一个xml转map的工具,并且还附带从map中查找某层级的子节点数据,借鉴博客:https://blog.csdn.net/lmb55/article/details/77507385
我在他的方法上做了一些小改动,因为我要根据classs>student>girlfriend拿到一个这样{girlfriend=[bbb, ccc]},或{girlfriend=[bbb]},所以不管一个值还是多个值我都要放到map中的list中,但他的map取list数据方法只能取一到一个list值如[bbb, ccc]
好了,来解析一下:
第一步:把xml转map方法:
- /**
- * 将Element对象转为Map(String→Document→Element→Map)
- * @param Element
- * @return
- */
- @SuppressWarnings({ "unchecked", "rawtypes" })
- public static Map Dom2Map(Element e){
- Map map = new HashMap();
- 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 = Dom2Map(iter);
- if(map.get(iter.getName()) != null){
- Object obj = map.get(iter.getName());
- if(!obj.getClass().getName().equals("java.util.ArrayList")){
- mapList = new ArrayList();
- mapList.add(obj);
- mapList.add(m);
- }
- if(obj.getClass().getName().equals("java.util.ArrayList")){
- 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.getClass().getName().equals("java.util.ArrayList")){
- mapList = new ArrayList();
- mapList.add(obj);
- mapList.add(iter.getText());
- }
- if(obj.getClass().getName().equals("java.util.ArrayList")){
- mapList = (List) obj;
- mapList.add(iter.getText());
- }
- map.put(iter.getName(), mapList);
- }else
- map.put(iter.getName(), iter.getText());//公共map resultCode=0
- }
- }
- }else
- map.put(e.getName(), e.getText());
- return map;
- }
- //调用上面的xml转map方法:
//xml转map
SAXReader saxReader = new SAXReader();
Document document = saxReader.read(new ByteArrayInputStream(respXml.getBytes()));
Element incomingForm = document.getRootElement();
Map map = Dom2Map(incomingForm);
System.out.println("map >>> "+ map);
/*
* {resultMsg=成功, orderOffer={offer={offerSpecName=980010992)商务助手(OCS)30元, endDt=3000-1-1 0:00:00, startDt=2012-11-27 16:48:12, offerSpecId=980010992, params={param=[{offerParamId=101000048281, itemSpecName=计费区分, itemSpecId=5030, value=CDMA预付费}, {offerParamId=101000048282, itemSpecName=经分区分, itemSpecId=5031, value=天翼商话}]}, offerId=105000808918}}, resultCode=0, saleOffer={categoryNode={offer=[{summary=待定..., id=980001995, name=(980001995)商务助手(OCS)201209版-30元}, {summary=待定..., id=980001996, name=(980001996)商务助手(OCS)201209版-50元}, {summary=待定..., id=980001997, name=(980001997)商务助手(OCS)201209版-80元}, {summary=待定..., id=980010993, name=(980010993)商务助手(OCS)50元}]}}}
*/
第二步:xml已经转成map数据结构了,下面要根据节点的层级路径,拿到你想要的节点值
- /**
- * 将多结点多层级的Map转为多包体的list集合
- * @param respStr
- * @param listNode
- * @return
- */
- @SuppressWarnings("unchecked")
- public static Map<String, List<String>> map2ListbyHandler(Map respStr,String listNode){
- List<String> resultList = new ArrayList<String>();
- Map<String, List<String>> resultMap = new HashMap<>();
- Map map = respStr;
- String[] strArray = listNode.split(">");
- String key = null;
- Object value = null;
- for (int i = 0; i < strArray.length; i++) {
- if (map.get(strArray[i]) instanceof List) {
- if (i < strArray.length && null != map.get(strArray[i]) && "" != map.get(strArray[i])) {
- Map<String,Object> mapList = map;
- if (((List<Map<String,Object>>)mapList.get(strArray[i])).size() > 0) {
- // Map mapj = new HashMap();
- // List<Map<String,Object>> list = ((List<Map<String,Object>>)mapList.get(strArray[i]));
- resultList = ((List<String>)mapList.get(strArray[i]));
- if(resultList.size() > 0){
- resultMap.put(strArray[i], resultList);
- }
- return resultMap;
- }
- }
- break;
- }else{
- if (i < strArray.length - 1 && null != map.get(strArray[i]) && "" != map.get(strArray[i])) {
- map = (Map) map.get(strArray[i]);
- }else{
- //说明没有此节点只有一个值,直接从map里把值取出放resultList中
- resultList.add(map.get(strArray[i]).toString());
- resultMap.put(strArray[i], resultList);//listNode
- }
- }
- }
- return resultMap;
- }
- //调用上面的遍历map取数据方法:原博客返回的是一个list,我给改成了map,因为我想要{girlfriend=[bbb, ccc]},或{girlfriend={bbb}}这种结果数据,方便我根据节点名称取值
- System.out.println("***************从map中将单个节点的值查找出来*********************");
- //map转list
- Map resultMap = XmlToMapUtil01.map2ListbyHandler(map,"student>age");
- System.out.println(resultMap.toString());
》》》》》》》》》》》》》》》》》》》》》》》》》》》》
好了,下面放上全部代码,一个XmlToMapUtil01.java工具类代码,和一个TestXmlToMap01.java用来测试工具类的文件
XmlToMapUtil01.java工具类
- package com.saoptest.test03;
- import java.io.ByteArrayInputStream;
- import java.util.ArrayList;
- import java.util.HashMap;
- import java.util.Iterator;
- import java.util.List;
- import java.util.Map;
- import org.dom4j.Document;
- import org.dom4j.DocumentException;
- import org.dom4j.Element;
- import org.dom4j.io.SAXReader;
- public class XmlToMapUtil01 {
- /**
- * 将Document对象转为Map(String→Document→Map)
- * @param Document
- * @return
- */
- @SuppressWarnings("rawtypes")
- public static Map<String, Object> Dom2Map(Document doc){
- Map<String, Object> map = new HashMap<String, Object>();
- if(doc == null)
- return map;
- Element root = doc.getRootElement();
- for (Iterator iterator = root.elementIterator(); iterator.hasNext();) {
- Element e = (Element) iterator.next();
- //System.out.println(e.getName());
- List list = e.elements();
- if(list.size() > 0){
- map.put(e.getName(), Dom2Map(e));
- }else
- map.put(e.getName(), e.getText());
- }
- return map;
- }
- /**
- * 将Element对象转为Map(String→Document→Element→Map)
- * @param Element
- * @return
- */
- @SuppressWarnings({ "unchecked", "rawtypes" })
- public static Map Dom2Map(Element e){
- Map map = new HashMap();
- 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 = Dom2Map(iter);
- if(map.get(iter.getName()) != null){
- Object obj = map.get(iter.getName());
- if(!obj.getClass().getName().equals("java.util.ArrayList")){
- mapList = new ArrayList();
- mapList.add(obj);
- mapList.add(m);
- }
- if(obj.getClass().getName().equals("java.util.ArrayList")){
- 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.getClass().getName().equals("java.util.ArrayList")){
- mapList = new ArrayList();
- mapList.add(obj);
- mapList.add(iter.getText());
- }
- if(obj.getClass().getName().equals("java.util.ArrayList")){
- mapList = (List) obj;
- mapList.add(iter.getText());
- }
- map.put(iter.getName(), mapList);
- }else
- map.put(iter.getName(), iter.getText());//公共map resultCode=0
- }
- }
- }else
- map.put(e.getName(), e.getText());
- return map;
- }
- //=========================上面是单节点多层级的xml转map====================================
- //=========================下面是多节点多层级的xml转map====================================
- /**
- * 将多结点多层级的Map转为多包体的list集合
- * @param respStr
- * @param listNode
- * @return
- */
- @SuppressWarnings("unchecked")
- public static Map<String, List<String>> map2ListbyHandler(Map respStr,String listNode){
- List<String> resultList = new ArrayList<String>();
- Map<String, List<String>> resultMap = new HashMap<>();
- Map map = respStr;
- String[] strArray = listNode.split(">");
- String key = null;
- Object value = null;
- for (int i = 0; i < strArray.length; i++) {
- if (map.get(strArray[i]) instanceof List) {
- if (i < strArray.length && null != map.get(strArray[i]) && "" != map.get(strArray[i])) {
- Map<String,Object> mapList = map;
- if (((List<Map<String,Object>>)mapList.get(strArray[i])).size() > 0) {
- // Map mapj = new HashMap();
- // List<Map<String,Object>> list = ((List<Map<String,Object>>)mapList.get(strArray[i]));
- resultList = ((List<String>)mapList.get(strArray[i]));
- if(resultList.size() > 0){
- resultMap.put(strArray[i], resultList);
- }
- return resultMap;
- }
- }
- break;
- }else{
- if (i < strArray.length - 1 && null != map.get(strArray[i]) && "" != map.get(strArray[i])) {
- map = (Map) map.get(strArray[i]);
- }else{
- //说明没有此节点只有一个值,直接从map里把值取出放resultList中
- resultList.add(map.get(strArray[i]).toString());
- resultMap.put(strArray[i], resultList);//listNode
- }
- }
- }
- return resultMap;
- }
- //===============map测试==========================
- public static void main(String[] args) {
- StringBuffer sb = new StringBuffer();
- sb.append("<response>");
- sb.append(" <resultCode>0</resultCode>");
- sb.append(" <resultMsg>成功</resultMsg>");
- sb.append(" <orderOffer>");
- sb.append(" <offer>");
- sb.append(" <offerId>105000808918</offerId>");
- sb.append(" <offerSpecId>980010992</offerSpecId>");
- sb.append(" <offerSpecName>980010992)商务助手(OCS)30元</offerSpecName>");
- sb.append(" <startDt>2012-11-27 16:48:12</startDt>");
- sb.append(" <endDt>3000-1-1 0:00:00</endDt>");
- sb.append(" <params>");
- sb.append(" <param>");
- sb.append(" <offerParamId>101000048281</offerParamId>");
- sb.append(" <itemSpecId>5030</itemSpecId>");
- sb.append(" <itemSpecName>计费区分</itemSpecName>");
- sb.append(" <value>CDMA预付费</value>");
- sb.append(" </param>");
- sb.append(" <param>");
- sb.append(" <offerParamId>101000048282</offerParamId>");
- sb.append(" <itemSpecId>5031</itemSpecId>");
- sb.append(" <itemSpecName>经分区分</itemSpecName>");
- sb.append(" <value>天翼商话</value>");
- sb.append(" </param>");
- sb.append(" </params>");
- sb.append(" </offer>");
- sb.append(" </orderOffer>");
- sb.append(" <saleOffer>");
- sb.append(" <categoryNode id = \"100472\">");
- sb.append(" <offer>");
- sb.append(" <id>980001995</id>");
- sb.append(" <name>(980001995)商务助手(OCS)201209版-30元</name>");
- sb.append(" <summary>待定...</summary>");
- sb.append(" </offer>");
- sb.append(" <offer>");
- sb.append(" <id>980001996</id>");
- sb.append(" <name>(980001996)商务助手(OCS)201209版-50元</name>");
- sb.append(" <summary>待定...</summary>");
- sb.append(" </offer>");
- sb.append(" <offer>");
- sb.append(" <id>980001997</id>");
- sb.append(" <name>(980001997)商务助手(OCS)201209版-80元</name>");
- sb.append(" <summary>待定...</summary>");
- sb.append(" </offer>");
- sb.append(" <offer>");
- sb.append(" <id>980010993</id>");
- sb.append(" <name>(980010993)商务助手(OCS)50元</name>");
- sb.append(" <summary>待定...</summary>");
- sb.append(" </offer>");
- sb.append(" </categoryNode>");
- sb.append(" </saleOffer>");
- sb.append("</response>");
- String respXml = sb.toString();
- try {
- //xml转map
- SAXReader saxReader = new SAXReader();
- Document document = saxReader.read(new ByteArrayInputStream(respXml.getBytes()));
- Element incomingForm = document.getRootElement();
- Map map = Dom2Map(incomingForm);
- System.out.println("map >>> "+ map);
- /*
- * {resultMsg=成功, orderOffer={offer={offerSpecName=980010992)商务助手(OCS)30元, endDt=3000-1-1 0:00:00, startDt=2012-11-27 16:48:12, offerSpecId=980010992, params={param=[{offerParamId=101000048281, itemSpecName=计费区分, itemSpecId=5030, value=CDMA预付费}, {offerParamId=101000048282, itemSpecName=经分区分, itemSpecId=5031, value=天翼商话}]}, offerId=105000808918}}, resultCode=0, saleOffer={categoryNode={offer=[{summary=待定..., id=980001995, name=(980001995)商务助手(OCS)201209版-30元}, {summary=待定..., id=980001996, name=(980001996)商务助手(OCS)201209版-50元}, {summary=待定..., id=980001997, name=(980001997)商务助手(OCS)201209版-80元}, {summary=待定..., id=980010993, name=(980010993)商务助手(OCS)50元}]}}}
- */
- System.out.println("***************从map中将单个节点的值查找出来*********************");
- //map转list
- map2ListbyHandler(map,"saleOffer>categoryNode>offer>id");
- /*
- * resultList >>> [{id=980001995}, {id=980001996}, {id=980001997}, {id=980010993}]
- */
- System.out.println("***************从map中将节点集合中的所有节点值都查找出来*******************************");
- List<String> nodeList = new ArrayList<String>();
- nodeList.add("resultCode");
- nodeList.add("resultMsg");
- nodeList.add("orderOffer>offer>offerSpecName");
- nodeList.add("orderOffer>offer>endDt");
- nodeList.add("orderOffer>offer>startDt");
- nodeList.add("orderOffer>offer>offerSpecId");
- nodeList.add("orderOffer>offer>offerId");
- nodeList.add("orderOffer>offer>params>param>offerParamId");
- nodeList.add("orderOffer>offer>params>param>itemSpecName");
- nodeList.add("orderOffer>offer>params>param>itemSpecId");
- nodeList.add("orderOffer>offer>params>param>value");
- nodeList.add("saleOffer>categoryNode>offer>id");
- nodeList.add("saleOffer>categoryNode>offer>summary");
- nodeList.add("saleOffer>categoryNode>offer>name");
- // str2ListbyHandler(nodeList,respXml);
- /**
- * [{offerParamId=101000048281, summary=待定..., endDt=3000-1-1 0:00:00, itemSpecId=5031, id=980001995, resultMsg=成功,
- * itemSpecName=经分区分, offerSpecName=980010992)商务助手(OCS)30元, offerSpecId=980010992, startDt=2012-11-27 16:48:12,
- * name=(980010993)商务助手(OCS)50元, resultCode=0, value=天翼商话, offerId=105000808918},
- * {offerParamId=101000048282, summary=待定..., endDt=3000-1-1 0:00:00, itemSpecId=5031, id=980001995, resultMsg=成功,
- * itemSpecName=经分区分, offerSpecName=980010992)商务助手(OCS)30元, offerSpecId=980010992, startDt=2012-11-27 16:48:12,
- * name=(980010993)商务助手(OCS)50元, resultCode=0, value=天翼商话, offerId=105000808918},
- * {offerParamId=101000048281, summary=待定..., endDt=3000-1-1 0:00:00, itemSpecId=5031, id=980001996, resultMsg=成功,
- * itemSpecName=经分区分, offerSpecName=980010992)商务助手(OCS)30元, offerSpecId=980010992, startDt=2012-11-27 16:48:12,
- * name=(980010993)商务助手(OCS)50元, resultCode=0, value=天翼商话, offerId=105000808918},
- * {offerParamId=101000048282, summary=待定..., endDt=3000-1-1 0:00:00, itemSpecId=5031, id=980001996, resultMsg=成功,
- * itemSpecName=经分区分, offerSpecName=980010992)商务助手(OCS)30元, offerSpecId=980010992, startDt=2012-11-27 16:48:12,
- * name=(980010993)商务助手(OCS)50元, resultCode=0, value=天翼商话, offerId=105000808918},
- * {offerParamId=101000048281, summary=待定..., endDt=3000-1-1 0:00:00, itemSpecId=5031, id=980001997, resultMsg=成功,
- * itemSpecName=经分区分, offerSpecName=980010992)商务助手(OCS)30元, offerSpecId=980010992, startDt=2012-11-27 16:48:12,
- * name=(980010993)商务助手(OCS)50元, resultCode=0, value=天翼商话, offerId=105000808918},
- * {offerParamId=101000048282, summary=待定..., endDt=3000-1-1 0:00:00, itemSpecId=5031, id=980001997, resultMsg=成功,
- * itemSpecName=经分区分, offerSpecName=980010992)商务助手(OCS)30元, offerSpecId=980010992, startDt=2012-11-27 16:48:12,
- * name=(980010993)商务助手(OCS)50元, resultCode=0, value=天翼商话, offerId=105000808918},
- * {offerParamId=101000048281, summary=待定..., endDt=3000-1-1 0:00:00, itemSpecId=5031, id=980010993, resultMsg=成功,
- * itemSpecName=经分区分, offerSpecName=980010992)商务助手(OCS)30元, offerSpecId=980010992, startDt=2012-11-27 16:48:12,
- * name=(980010993)商务助手(OCS)50元, resultCode=0, value=天翼商话, offerId=105000808918},
- * {offerParamId=101000048282, summary=待定..., endDt=3000-1-1 0:00:00, itemSpecId=5031, id=980010993, resultMsg=成功,
- * itemSpecName=经分区分, offerSpecName=980010992)商务助手(OCS)30元, offerSpecId=980010992, startDt=2012-11-27 16:48:12,
- * name=(980010993)商务助手(OCS)50元, resultCode=0, value=天翼商话, offerId=105000808918}]
- */
- } catch (DocumentException e) {
- e.printStackTrace();
- }
- }
- }
TestXmlToMap01.java
- package com.saoptest.test03;
- import java.io.ByteArrayInputStream;
- import java.util.List;
- import java.util.Map;
- import org.dom4j.Document;
- import org.dom4j.Element;
- import org.dom4j.io.SAXReader;
- public class TestXmlToMap01 {
- public static void main(String[] args) throws Exception {
- //xml转json
- String xml = "<class><student><name>aaaaaa</name><girlfriend>bbb</girlfriend><girlfriend>ccc</girlfriend></student></class>";
- // String xml = "<class><student><name>aaaaaa</name><girlfriend>bbb</girlfriend></student></class>";
- // String xml = "<class><student><name>aaaaaa</name><age>21</age></student><student><name>bbbbbb</name><age>22</age></student></class>";
- // String xml = "<class><student><name>aaaaaa</name><age>21</age></student></class>";
- //xml转map
- SAXReader saxReader = new SAXReader();
- Document document = saxReader.read(new ByteArrayInputStream(xml.getBytes()));
- Element incomingForm = document.getRootElement();
- Map map = XmlToMapUtil01.Dom2Map(incomingForm);
- System.out.println("map >>> "+ map);
- /*
- * {resultMsg=成功, orderOffer={offer={offerSpecName=980010992)商务助手(OCS)30元, endDt=3000-1-1 0:00:00, startDt=2012-11-27 16:48:12, offerSpecId=980010992, params={param=[{offerParamId=101000048281, itemSpecName=计费区分, itemSpecId=5030, value=CDMA预付费}, {offerParamId=101000048282, itemSpecName=经分区分, itemSpecId=5031, value=天翼商话}]}, offerId=105000808918}}, resultCode=0, saleOffer={categoryNode={offer=[{summary=待定..., id=980001995, name=(980001995)商务助手(OCS)201209版-30元}, {summary=待定..., id=980001996, name=(980001996)商务助手(OCS)201209版-50元}, {summary=待定..., id=980001997, name=(980001997)商务助手(OCS)201209版-80元}, {summary=待定..., id=980010993, name=(980010993)商务助手(OCS)50元}]}}}
- */
- System.out.println("***************从map中将单个节点的值查找出来*********************");
- //map转list
- Map<String, List<String>> resultMap = XmlToMapUtil01.map2ListbyHandler(map,"student>girlfriend");
- List<String> list = resultMap.get("girlfriend");
- System.out.println("resultMap=" + resultMap.toString());
- if(!"null".equals(resultMap.get("girlfriend").toString())){
- System.out.println("有数据:" + resultMap.get("girlfriend"));
- }else{
- System.out.println("没数据:" + resultMap.get("girlfriend"));
- }
- // Map<String, List<String>> map1 = new HashMap<String, List<String>>();
- // List<String> lists = new ArrayList<String>();
- // lists.add("bbb");
- // lists.add("ccc");
- // map1.put("girlfriend", lists);
- // System.out.println("map1====" + map1.toString());
- // System.out.println(map1.get("girlfriend"));
- // System.out.println(map1.get("girlfriend").get(0) + "=====" + map1.get("girlfriend").get(1));
- //
- }
- }
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