java中json转xml-白红宇

java中json转xml

阅读量：6429 次

发布时间：2019-06-23

本文共 6073 字，大约阅读时间需要 20 分钟。

参考：http://heipark.iteye.com/blog/1394844

需要json-lib-2.1-jdk15.jar和xom-1.2.5.jar，maven pom.xml如下：

xml代码


        
           
     
      net.sf.json-lib
            
     
      json-lib
            
     
      2.1
            
     
      jdk15
         
        
           
     
      xom
            
     
      xom
            
     
      1.2.5
            
     
      jar
            
     
      compile

java代码

package com.nirvanainfo.salesleads.framework.utils; import java.io.ByteArrayOutputStream; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import net.sf.json.JSON; import net.sf.json.JSONSerializer; import net.sf.json.xml.XMLSerializer; import org.dom4j.Document; import org.dom4j.DocumentHelper; import org.dom4j.Element; import org.dom4j.io.OutputFormat; import org.dom4j.io.XMLWriter; /**  * Created by Administrator on 2016/9/2.  */ public class XmlConverUtil {
      /**      * map to xml xml 
    
     
      value1
     
     
      value2
     ......
          *      * @param map      * @return      */     public static String maptoXml(Map map) {
          Document document = DocumentHelper.createDocument();         Element nodeElement = document.addElement("node");         for (Object obj : map.keySet()) {
              Element keyElement = nodeElement.addElement("key");             keyElement.addAttribute("label", String.valueOf(obj));             keyElement.setText(String.valueOf(map.get(obj)));         }         return doc2String(document);     }     /**      * list to xml xml 
    
     
      
       value1
      
      
       value2
      ......
     
     
      
       value1
      
      
       value2
      ......
     
          *      * @param list      * @return      */     public static String listtoXml(List list) throws Exception {
          Document document = DocumentHelper.createDocument();         Element nodesElement = document.addElement("nodes");         int i = 0;         for (Object o : list) {
              Element nodeElement = nodesElement.addElement("node");             if (o instanceof Map) {
                  for (Object obj : ((Map) o).keySet()) {
                      Element keyElement = nodeElement.addElement("key");                     keyElement.addAttribute("label", String.valueOf(obj));                     keyElement.setText(String.valueOf(((Map) o).get(obj)));                 }             } else {
                  Element keyElement = nodeElement.addElement("key");                 keyElement.addAttribute("label", String.valueOf(i));                 keyElement.setText(String.valueOf(o));             }             i++;         }         return doc2String(document);     }     /**      * json to xml {"node":{"key":{"@label":"key1","#text":"value1"}}} conver      * 
    
     
      
       value1
      
     
          *      * @param json      * @return      */     public static String jsontoXml(String json) {
          try {
              XMLSerializer serializer = new XMLSerializer();             JSON jsonObject = JSONSerializer.toJSON(json);             return serializer.write(jsonObject);         } catch (Exception e) {
              e.printStackTrace();         }         return null;     }     /**      * xml to map xml 
    
     
      value1
     
     
      value2
     ......
          *      * @param xml      * @return      */     public static Map xmltoMap(String xml) {
          try {
              Map map = new HashMap();             Document document = DocumentHelper.parseText(xml);             Element nodeElement = document.getRootElement();             List node = nodeElement.elements();             for (Iterator it = node.iterator(); it.hasNext();) {
                  Element elm = (Element) it.next();                 map.put(elm.attributeValue("label"), elm.getText());                 elm = null;             }             node = null;             nodeElement = null;             document = null;             return map;         } catch (Exception e) {
              e.printStackTrace();         }         return null;     }     /**      * xml to list xml 
    
     
      
       value1
      
      
       value2
      ......
     
     
      
       value1
      
      
       value2
      ......
     
          *      * @param xml      * @return      */     public static List xmltoList(String xml) {
          try {
              List list = new ArrayList();             Document document = DocumentHelper.parseText(xml);             Element nodesElement = document.getRootElement();             List nodes = nodesElement.elements();             for (Iterator its = nodes.iterator(); its.hasNext();) {
                  Element nodeElement = (Element) its.next();                 Map map = xmltoMap(nodeElement.asXML());                 list.add(map);                 map = null;             }             nodes = null;             nodesElement = null;             document = null;             return list;         } catch (Exception e) {
              e.printStackTrace();         }         return null;     }     /**      * xml to json 
      
       
        value1
       
       转化为      * {"key":{"@label":"key1","#text":"value1"}}      *      * @param xml      * @return      */     public static String xmltoJson(String xml) {
          XMLSerializer xmlSerializer = new XMLSerializer();         return xmlSerializer.read(xml).toString();     }     /**      *      * @param document      * @return      */     public static String doc2String(Document document) {
          String s = "";         try {
              // 使用输出流来进行转化             ByteArrayOutputStream out = new ByteArrayOutputStream();             // 使用UTF-8编码             OutputFormat format = new OutputFormat("   ", true, "UTF-8");             XMLWriter writer = new XMLWriter(out, format);             writer.write(document);             s = out.toString("UTF-8");         } catch (Exception ex) {
              ex.printStackTrace();         }         return s;     } }