Java xml和json互相转换方法

╰+哭是因爲堅強的太久メ 2024-04-06 10:22 103阅读 0赞

#### 目录 ####

*  1 java xml转为json的方法
 *   *  1.1 fastjson和jdom2进行转化
     *  1.2 用的org.json包
 *  2 java json格式转xml格式
 *   *  2.1 使用 jdom 进行转换
     *  2.2 使用 dom4j 进行转换

--------------------

## 1 java xml转为json的方法 ##

### 1.1 fastjson和jdom2进行转化 ###

<?xml version="1.0" encoding="utf-8" ?>
 <auibinsurancecallback>
 <policyinfo>
 <transtype>TKTS</transtype>
 <eticketno>xxx</eticketno>
 <flightnumber>xxx</flightnumber>
 <flightdate>2019-10-16</flightdate>
 <operatetime>2019-10-16 17:20:00</operatetime>
 <insureno>1910161720056066735</insureno>
 <agreeno>102160199</agreeno>
 <policyno>
 </policyno>
 <policyurl>
 
 </policyurl>
 </policyinfo>
 <returninfo>
 <serialnumber>2019103015284949545354
 </serialnumber>
 <retruncode>0</retruncode>
 <errormessage>
 
 </errormessage>
 </returninfo>
 </auibinsurancecallback>";

public static JSONObject xml2JSON(byte[] xml) throws JDOMException, IOException {
 
 JSONObject json = new JSONObject();
 InputStream is = new ByteArrayInputStream(xml);
 SAXBuilder sb = new SAXBuilder();
 org.jdom2.Document doc = sb.build(is);
 Element root = doc.getRootElement();
 json.put(root.getName(), iterateElement(root));
 return json;
 }
 
 private static JSONObject iterateElement(Element element) {
 
 List node = element.getChildren();
 Element et = null;
 JSONObject obj = new JSONObject();
 List list = null;
 for (int i = 0; i < node.size(); i++) {
 
 list = new LinkedList();
 et = (Element) node.get(i);
 if (et.getTextTrim().equals("")) {
 
 if (et.getChildren().size() == 0)
 continue;
 if (obj.containsKey(et.getName())) {
 
 list = (List) obj.get(et.getName());
 }
 list.add(iterateElement(et));
 obj.put(et.getName(), list);
 } else {
 
 if (obj.containsKey(et.getName())) {
 
 list = (List) obj.get(et.getName());
 }
 list.add(et.getTextTrim());
 obj.put(et.getName(), list);
 }
 }
 return obj;
 }
 
 @Test
 public void xml1(){
 
 String xml = 上面贴的xml;
 
 JSONObject json= null;
 try {
 
 json = xml2JSON(xml.getBytes());
 System.out.println(json.toJSONString());
 } catch (JDOMException e) {
 
 e.printStackTrace();
 } catch (IOException e) {
 
 e.printStackTrace();
 }
 
 }

实现效果：

{
        
      "auibinsurancecallback": {
        
        "returninfo": [
          {
        
            "retruncode": [
              "0"
            ],
            "serialnumber": [
              "2019103015284949545354"
            ]
          }
        ],
        "policyinfo": [
          {
        
            "operatetime": [
              "2019-10-16 17:20:00"
            ],
            "transtype": [
              "TKTS"
            ],
            "flightdate": [
              "2019-10-16"
            ],
            "insureno": [
              "1910161720056066735"
            ],
            "flightnumber": [
              "xxx"
            ],
            "agreeno": [
              "102160199"
            ],
            "eticketno": [
              "xxxx"
            ]
          }
        ]
      }
    }

`比较丑全是list的样子,也能用`

### 1.2 用的org.json包 ###

在用org.json包的时候，需要把spring-boot-starter-test中的，android-json排除，要不然会报错：

java.lang.NoSuchMethodError: org.json.JSONTokener.(Ljava/io/Reader;)V

java.lang.NoSuchMethodError: org.json.JSONObject.put(Ljava/lang/String;Ljava/util/Collection;)

<dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-test</artifactId>
 <scope>test</scope>
 <exclusions>
 <exclusion>
 <groupId>com.vaadin.external.google</groupId>
 <artifactId>android-json</artifactId>
 </exclusion>
 </exclusions>
 </dependency>

实现方法简单：

org.json.JSONObject xmlJSONObj = null;
           try {
        
               xmlJSONObj = XML.toJSONObject(xml);
               log.debug("json:" + xmlJSONObj.toString() );
           } catch (JSONException e) {
        
               e.printStackTrace();
           }

实现效果：

{
        
      "auibinsurancecallback": {
        
        "returninfo": {
        
          "errormessage": "",
          "retruncode": 0,
          "serialnumber": 2.0191030152849496e+21
        },
        "policyinfo": {
        
          "policyurl": "",
          "operatetime": "2019-10-16 17:20:00",
          "transtype": "TKTS",
          "flightdate": "2019-10-16",
          "insureno": 1910161720056066800,
          "flightnumber": "xxx",
          "agreeno": 102160199,
          "policyno": "",
          "eticketno": xxx
        }
      }
    }

## 2 java json格式转xml格式 ##

### 2.1 使用 jdom 进行转换 ###

描述：

> xml转json org.jdom  
> 用 dom 提取节点 转成map  
> json 转 xml com.alibaba.fastjson.JSONObject

需要引入 jdom 1.x 版本：

<dependency>
 		 <groupId>org.jdom</groupId>
 		 <artifactId>jdom</artifactId>
 		 <version>1.1.3</version>
 		</dependency>

import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.StringReader;
 import java.io.StringWriter;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
 
 import org.dom4j.io.OutputFormat;
 import org.dom4j.io.SAXReader;
 import org.dom4j.io.XMLWriter;
 import org.jdom.Document;
 import org.jdom.Element;
 import org.jdom.JDOMException;
 import org.jdom.input.SAXBuilder;
 import org.xml.sax.InputSource;
 
 import com.alibaba.fastjson.JSON;
 import com.alibaba.fastjson.JSONArray;
 import com.alibaba.fastjson.JSONObject;
 
 public class JsonToXml {
 
 public static void main(String[] args) throws Exception {
 
 //请注意使用正常的xml
 //xml->json
 // String jsonStr = xmlToJson("D:\\NewFile.xml", null);
 // System.out.println(jsonStr);
 
 //json->xml
 String xmlstr = jsonToXml("{\"b_content\":{\"sdata\":\"Ps/DPJnZZPN6QQJQodY3+hK6PWCF3/2oi3DJPnFEXgKDrXX5rHT7q/I0nQPAruuBbQRfErnenQNvPpbf/lXl690qtye0/ZEuDs0ByFdFAGffQalB+Ij3lLUMDPz=\",\"userobj\":{\"uid\":\"ma000\",\"realtype\":\"DC\",\"cn\":\"法人用户2\",\"tokenid\":\"\",\"usertype\":\"2\",\"link_person_name\":\"联系人2\",\"isreal\":\"true\",\"telephonenumber\":\"13*******21\",\"mail\":\"ceshi@123.com\",\"idcardtype\":\"10\",\"createtime\":\"20150618191221\",\"extproperties\":[\"address=广东省广州市天河区天河北路XXX号\",\"legal_code=440***********033\",\"ent_type=-1\",\"link_person_code=350************14\",\"origin=gdbs\",\"card_type_two_num=-1\",\"cert_ca=-1\",\"accout_type=2\",\"account_uid=2\",\"comm_code=-1\",\"unit_type=-1\",\"legal_id_type=10\",\"landline=-1\",\"tax_code=-1\",\"cert_notafter=-1\",\"card_type_one_num=-1\",\"local_user=-1\",\"legal_person=郑**\",\"link_person_type=10\",\"card_type_three=-1\",\"card_type_two=-1\",\"card_type_three_num=-1\",\"cert_data=-1\",\"area=guangzhou\",\"uversion=3.0\",\"cert_notbefore=-1\",\"card_type_one=-1\",\"user_typeext=2\"],\"idcardnumber\":\"11***************23\",\"useridcode\":\"38c97fa1ee2e43d4a664cffc4554cde4\",\"creditable_level_of_account_way\":\"L2@YSS@2088******653||L0@IDV@44088******75||L3@GW@44088******75\",\"creditable_level_of_account\":\"L3\"},\"pareobj\":{\"uid\":\"mayintao\",\"realtype\":\"DC\",\"cn\":\"单位用户2\",\"tokenid\":\"\",\"usertype\":\"2\",\"link_person_name\":\"联系人2\",\"isreal\":\"true\",\"telephonenumber\":\"13*******21\",\"mail\":\"ceshi@123.com\",\"idcardtype\":\"50\",\"createtime\":\"20150618191221\",\"extproperties\":[\"address=广东省广州市东山区\",\"legal_id_type=-1\",\"link_person_type=-1\",\"legal_code=-1\",\"origin=gdbs\",\"tax_code=-1\",\"legal_person=-1\",\"area=shenzhen\",\"link_person_code=-1\",\"user_typeext=2\",\"uversion=1.0\"],\"idcardnumber\":\"456787654\",\"useridcode\":\"75c91fagrr2e67d4a169cfmc8735ctrf\",\"creditable_level_of_account_way\":\"L2@YSS@2088******653||L0@IDV@44088******75||L3@GW@44088******75\",\"creditable_level_of_account\":\"L3\"},\"user_creditable_level\":{\"creditable_level_of_account_way\":\"L2@YSS@2088******653||L0@IDV@44088******75||L3@GW@44088******75\",\"creditable_level_of_account_way_list\":[{\"auth_time\":\"2018-02-28 16:45:26\",\"uniqueid\":\"***86f93fb61***\",\"user_name\":\"郭**\",\"auth_identification\":\"2088******653\",\"identity_level\":\"L2\",\"credential_no\":\"44088******75\",\"way_code\":\"YSS\"},{\"auth_time\":null,\"uniqueid\":\"***764486f93fb61212***\",\"user_name\":\"郭**\",\"auth_identification\":\"44088******75\",\"identity_level\":\"L0\",\"credential_no\":\"44088******75\",\"way_code\":\"IDV\"},{\"auth_time\":\"2018-02-13 17:12:31\",\"uniqueid\":\"*****764486f93fb612122*****\",\"user_name\":\"郭**\",\"auth_identification\":\"44088******75\",\"identity_level\":\"L3\",\"credential_no\":\"44088******75\",\"way_code\":\"GW\"}],\"creditable_level_of_account\":\"L3\"}},\"time_stamp\":\"20200821\",\"version \":\"v1\",\"sign\":\"rxf0MFT7eQqYgYKWtgzNBi6mhS2tbqkPgI \"}");
 System.out.println(xmlstr);
 createXMLFile(formatXML(xmlstr), "测试");
 }
 
 /**
 * xml转json字符串 注意:路径和字符串二传一另外一个传null 
 * 方 法 名：xmlToJson 
 * @param xmlPath xml路径(和字符串二传一,两样都传优先使用路径)
 * @param xmlStr xml字符串(和路径二传一,两样都传优先使用路径)
 * @return String
 * @throws IOException 
 * @throws JDOMException 
 */
 @SuppressWarnings("unchecked")
 public static String xmlToJson(String xmlPath,String xmlStr){
 
 SAXBuilder sbder = new SAXBuilder();
 Map<String, Object> map = new HashMap<String, Object>();
 Document document;
 try {
 
 if(xmlPath!=null){
 
 //路径
 document = sbder.build(new File(xmlPath));
 }else if(xmlStr!=null){
 
 //xml字符
 StringReader reader = new StringReader(xmlStr);
 InputSource ins = new InputSource(reader);
 document = sbder.build(ins);
 }else{
 
 return "{}";
 }
 //获取根节点
 Element el = document.getRootElement();
 List<Element> eList = el.getChildren();
 Map<String, Object> rootMap = new HashMap<String, Object>();
 //得到递归组装的map
 rootMap = xmlToMap(eList,rootMap);
 map.put(el.getName(), rootMap);
 //将map转换为json 返回
 return JSON.toJSONString(map);
 } catch (Exception e) {
 
 return "{}";
 }
 }
 /**
 * json转xml 
 * 方 法 名：jsonToXml 
 * @param json
 * @return String
 */
 public static String jsonToXml(String json){
 
 try {
 
 StringBuffer buffer = new StringBuffer();
 buffer.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>");
 buffer.append("<base>");
 JSONObject jObj = JSON.parseObject(json);
 jsonToXmlstr(jObj,buffer);
 buffer.append("</base>");
 return buffer.toString();
 } catch (Exception e) {
 
 e.printStackTrace();
 return "";
 }
 }
 /**
 * json转str 
 * 方 法 名：jsonToXmlstr 
 * @param jObj
 * @param buffer
 * @return String
 */
 public static String jsonToXmlstr(JSONObject jObj,StringBuffer buffer ){
 
 Set<Entry<String, Object>> se = jObj.entrySet();
 for( Iterator<Entry<String, Object>> it = se.iterator(); it.hasNext(); )
 {
 
 Entry<String, Object> en = it.next();
 if(en.getValue() != null && en.getValue().getClass().getName().equals("com.alibaba.fastjson.JSONObject")){
 
 buffer.append("<"+en.getKey()+">");
 JSONObject jo = jObj.getJSONObject(en.getKey());
 jsonToXmlstr(jo,buffer);
 buffer.append("</"+en.getKey()+">");
 }else if(en.getValue() != null && en.getValue().getClass().getName().equals("com.alibaba.fastjson.JSONArray")){
 
 if (en.getKey().equals("extproperties")) {
 
 JSONArray ja = jObj.getJSONArray(en.getKey());
 Iterator<Object> it1 = ja.iterator();
 List<String> list=new ArrayList<String>();
 while (it1.hasNext()) {
 
 String ob = (String) it1.next(); 
 System.out.println(ob); 
 }
 }else {
 
 JSONArray jarray = jObj.getJSONArray(en.getKey());
 for (int i = 0; i < jarray.size(); i++) {
 
 buffer.append("<"+en.getKey()+">");
 JSONObject jsonobject = jarray.getJSONObject(i);
 jsonToXmlstr(jsonobject,buffer);
 buffer.append("</"+en.getKey()+">"); 
 }
 }
 
 }else if(en.getValue() != null && en.getValue().getClass().getName().equals("java.lang.String")){
 
 buffer.append("<"+en.getKey()+">"+en.getValue());
 buffer.append("</"+en.getKey()+">");
 }else{
 
 buffer.append("<"+en.getKey()+">"+"");
 buffer.append("</"+en.getKey()+">");
 }
 
 }
 return buffer.toString();
 }
 
 
 /**
 * 节点转map 
 * 方 法 名：xmlToMap 
 * @param eList
 * @param map
 * @return Map<String,Object>
 */
 @SuppressWarnings("unchecked")
 public static Map<String, Object> xmlToMap(List<Element> eList,Map<String, Object> map){
 
 for (Element e : eList) {
 
 Map<String, Object> eMap = new HashMap<String, Object>();
 List<Element> elementList = e.getChildren();
 if(elementList!=null&&elementList.size()>0){
 
 eMap = xmlToMap(elementList,eMap);
 Object obj = map.get(e.getName());
 if(obj!=null){
 
 List<Object> olist = new ArrayList<Object>();
 if(obj.getClass().getName().equals("java.util.HashMap")){
 
 olist.add(obj);
 olist.add(eMap);
 
 }else if(obj.getClass().getName().equals("java.util.ArrayList")){
 
 olist = (List<Object>)obj;
 olist.add(eMap);
 }
 map.put(e.getName(), olist);
 }else{
 
 map.put(e.getName(), eMap);
 }
 }else{
 
 map.put(e.getName(), e.getValue());
 }
 }
 return map;
 }
 
 
 /**
 * 将已经格式化的xml字符串写入xml文件
 * @param xmlStr
 * @return
 */
 public static boolean createXMLFile(String xmlStr,String xmlName){
 
 boolean flag = false;
 try {
 
 XMLWriter output = null;
 //OutputFormat format = OutputFormat.createPrettyPrint(); 
 //format.setSuppressDeclaration(true);
 // format.setEncoding("UTF-8");
 
 //如果上面设置的xml编码类型为GBK，则应当用FileWriter来构建xml文件，否则会出现中文连码问题
 /*outpt = new XMLWriter(
 new FileWriter( 
 new File("D:/myeclipse/Workspaces/fusionChartsDemoTest/WebRoot/xml/"+xmlName+".xml")) ,
 format);
 */
 
 //如果上面设置的xml编码类型为utf-8，则应当用FileOutputStream来构建xml文件，否则还是会出现问题
 output = new XMLWriter(
 new FileOutputStream( 
 new File("D:/"+xmlName+".xml")));
 output.setEscapeText(false);
 output.write( xmlStr );
 output.close();
 return flag = true;
 
 } catch (IOException e) {
 
 e.printStackTrace();
 return flag;
 }
 
 }
 
 public static String formatXML(String str) throws Exception {
 
 
 SAXReader reader=new SAXReader();
 
 //创建一个串的字符输入流
 StringReader in=new StringReader(str);
 org.dom4j.Document doc=reader.read(in);
 // 创建输出格式
 OutputFormat formater=OutputFormat.createPrettyPrint();
 //去掉xml文件的版本信息
 //formater.setSuppressDeclaration(true);
 //设置xml的输出编码
 formater.setEncoding("UTF-8");
 //创建输出(目标)
 StringWriter out=new StringWriter();
 //创建输出流
 XMLWriter writer=new XMLWriter(out,formater);
 //输出格式化的串到目标中，执行后。格式化后的串保存在out中。
 writer.write(doc);
 
 writer.close();
 
 // System.out.println(out.toString());
 
 //返回我们格式化后的结果
 return out.toString(); 
 }
 }

### 2.2 使用 dom4j 进行转换 ###

描述：

> 使用 dom4j 和  
> com.google.gson.\*

需要引入 dom4j 1.6.1 版本和 gson：

<dependency>
 		 <groupId>dom4j</groupId>
 		 <artifactId>dom4j</artifactId>
 		 <version>1.6.1</version>
 		</dependency>
 		<dependency>
 			<groupId>com.google.code.gson</groupId>
 			<artifactId>gson</artifactId>
 			<version>2.2.4</version>
 		</dependency>

import java.io.File;
 import java.io.FileOutputStream;
 import java.util.Map.Entry;
 import java.util.Set;
 
 import org.dom4j.*;
 import org.dom4j.io.OutputFormat;
 import org.dom4j.io.XMLWriter;
 
 import com.google.gson.*;
 
 public class JsonToXml2 {
 
 private static final String STR_JSON = "{\"stakeapply\":{\"voltageLevel\":\"AC00062\",\"stakeList\":{\"stake\":[{\"stakeAssetNO\":45754745,\"otherStakeTypeRemark\":\"xxx\",\"stationId\":\"547547547547\"},{\"stakeAssetNO\":34325325322,\"otherStakeTypeRemark\":\"xxx\",\"stationId\":\"52354645462\"}]},\"otherStationTypeRemark\":\"xxx\",\"stationAddr\":\"哈哈\",\"custLists\":{\"custList\":{\"custId\":\"7547547547\",\"custPhone\":13666666666,\"contactMode\":1}},\"principalList\":{\"principal\":[{\"principalName\":121212,\"principalType\":1},{\"principalName\":12121233,\"principalType\":1}]}}}";
 
 /**
 * 将json字符串转换成xml
 * 
 * @param json
 * json字符串
 * @param parentElement
 * xml根节点
 * @throws Exception
 */
 public static Element jsonToXml(String json, Element parentElement) throws Exception {
 
 JsonObject jsonObject = new JsonParser().parse(json).getAsJsonObject();
 Element ee = toXml(jsonObject, parentElement, null);
 return ee;
 }
 
 /**
 * 将json字符串转换成xml
 * 
 * @param jsonElement
 * 待解析json对象元素
 * @param parentElement
 * 上一层xml的dom对象
 * @param name
 * 父节点
 */
 public static Element toXml(JsonElement jsonElement, Element parentElement, String name) {
 
 if (jsonElement instanceof JsonArray) {
 
 //是json数据，需继续解析
 JsonArray sonJsonArray = (JsonArray)jsonElement;
 for (int i = 0; i < sonJsonArray.size(); i++) {
 
 JsonElement arrayElement = sonJsonArray.get(i);
 toXml(arrayElement, parentElement, name);
 }
 }else if (jsonElement instanceof JsonObject) {
 
 //说明是一个json对象字符串，需要继续解析
 JsonObject sonJsonObject = (JsonObject) jsonElement;
 Element currentElement = null;
 if (name != null) {
 
 currentElement = parentElement.addElement(name);
 }
 Set<Entry<String, JsonElement>> set = sonJsonObject.entrySet();
 for (Entry<String, JsonElement> s : set) {
 
 toXml(s.getValue(), currentElement != null ? currentElement : parentElement, s.getKey());
 }
 } else {
 
 //说明是一个键值对的key,可以作为节点插入了
 addAttribute(parentElement, name, jsonElement.getAsString());
 }
 return parentElement;
 }
 
 /**
 * 
 * @param element 父节点
 * @param name 子节点的名字
 * @param value 子节点的值
 */
 public static void addAttribute(Element element, String name, String value) {
 
 //增加子节点，并为子节点赋值
 Element el = element.addElement(name);
 el.addText(value);
 
 }
 public static void main(String[] args) throws Exception {
 
 
 Document document = DocumentHelper.createDocument();
 Element root = document.addElement("stakeapply"); //默认根节点
 Element el = jsonToXml(STR_JSON, root);
 System.out.println(el.asXML());
 try {
 
 //生成xml文件
 String fileName = "test.xml";
 OutputFormat format = OutputFormat.createPrettyPrint();
 format.setEncoding("UTF-8"); // 指定XML编码
 format.setExpandEmptyElements(true);//自动添加闭合标签
 document.setXMLEncoding("UTF-8");
 //指定文件路径，名字，格式
 XMLWriter writer = new XMLWriter(
 new FileOutputStream(new File("D:" + File.separator + fileName)), format);
 writer.write(document);
 writer.close();
 } catch (Exception e) {
 
 e.printStackTrace();
 }
 }
 /*
 json串
 {
 "stakeapply": {
 "voltageLevel": "AC00062", 
 "stakeList": {
 "stake": [
 {
 "stakeAssetNO": 45754745, 
 "otherStakeTypeRemark": "xxx", 
 "stationId": "547547547547"
 }, 
 {
 "stakeAssetNO": 34325325322, 
 "otherStakeTypeRemark": "xxx", 
 "stationId": "52354645462"
 }
 ]
 }, 
 "otherStationTypeRemark": "xxx", 
 "stationAddr": "哈哈", 
 "custLists": {
 "custList": {
 "custId": "7547547547", 
 "custPhone": 13666666666, 
 "contactMode": 1
 }
 }, 
 "principalList": {
 "principal": [
 {
 "principalName": 121212, 
 "principalType": 1
 }, 
 {
 "principalName": 12121233, 
 "principalType": 1
 }
 ]
 }
 }
 }
 */
 
 /*
 转换后的xml
 <?xml version="1.0" encoding="UTF-8"?>
 
 <stakeapply>
 <voltageLevel>AC00062</voltageLevel>
 <stakeList>
 <stake>
 <stakeAssetNO>45754745</stakeAssetNO>
 <otherStakeTypeRemark>xxx</otherStakeTypeRemark>
 <stationId>547547547547</stationId>
 </stake>
 <stake>
 <stakeAssetNO>34325325322</stakeAssetNO>
 <otherStakeTypeRemark>xxx</otherStakeTypeRemark>
 <stationId>52354645462</stationId>
 </stake>
 </stakeList>
 <otherStationTypeRemark>xxx</otherStationTypeRemark>
 <stationAddr>哈哈</stationAddr>
 <custLists>
 <custList>
 <custId>7547547547</custId>
 <custPhone>13666666666</custPhone>
 <contactMode>1</contactMode>
 </custList>
 </custLists>
 <principalList>
 <principal>
 <principalName>121212</principalName>
 <principalType>1</principalType>
 </principal>
 <principal>
 <principalName>12121233</principalName>
 <principalType>1</principalType>
 </principal>
 </principalList>
 </stakeapply>
 */
 }