xml以及json 和Java对象的相互转化

最新推荐文章于 2025-06-16 09:19:33 发布

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最新推荐文章于 2025-06-16 09:19:33 发布

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本文链接：https://blog.youkuaiyun.com/wqy123123wqy/article/details/76072509

本文介绍了如何将XML数据转换为Map对象，并演示了如何从Map对象构建Java Bean实例。此外，还详细展示了如何通过HTTP请求获取JSON数据并将其解析为Java对象的过程。

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1.xml对象转化为map对象

public Map<String, String> xmlStrToMap(String xmlStr) throws Exception { if (StringUtils.isEmpty(xmlStr)) { return null; } Map<String, String> map = new HashMap<String, String>(); // 将xml格式的字符串转换成Document对象 Document doc = DocumentHelper.parseText(xmlStr); // 获取根节点 Element root = doc.getRootElement(); // 获取根节点下的所有元素 List children = root.elements(); // 循环所有子元素 if (children != null && children.size() > 0) { for (int i = 0; i < children.size(); i++) { Element child = (Element) children.get(i); map.put(child.getName(), child.getTextTrim()); } } return map; }

2.map对象转化为普通的Javabean

public Bean mapToBean(Map<String, String> map) throws ParseException { Bean be= new Bean (); be.setName(map.get("Name")); ...... return be; }

3.通过http访问解析json对象
//读取图片json
   public static void ReadPicJsonForHomeDto(HomeDto homeDto) {
       String homePicUrl = "http://www.gymboclub.com/index.php?app=square&mod=Mate&act=homePicDtoList";
       String homePicContent = getContent(homePicUrl);

       List<HomePicDto> homePicDtoList = new ArrayList<HomePicDto>();
       JSONObject picObj;
       if(StringUtils.isBlank(homePicContent)){
           return;
       }
       try {
           picObj = new JSONObject(homePicContent);
           String picMsg = picObj.getString("msg");
           String picStatus = picObj.getString("status");
           System.out.println(picMsg+picStatus);

           String picData = picObj.getString("data");
           JSONArray picjsonArray = new JSONArray(picData);
           int picSize = picjsonArray.length();
           for(int i=0;i<picSize;i++){
               JSONObject picJsonObj = picjsonArray.getJSONObject(i);
               HomePicDto homePicDto = new HomePicDto();
               homePicDto.setPicPath(picJsonObj.get("picPath").toString());
               homePicDto.setLink(picJsonObj.get("link").toString());
               homePicDtoList.add(homePicDto);
           }
           homeDto.setHomePicDtoList(homePicDtoList);
       } catch (JSONException e) {
           e.printStackTrace();
       }
   }

public static String getContent(String strUrl) {

        try {

            URL url = new URL(strUrl);
            BufferedReader br = new BufferedReader(new InputStreamReader(url

            .openStream(), "UTF-8"));

            String s = "";

            StringBuffer sb = new StringBuffer("");

            while ((s = br.readLine()) != null) {

               sb.append(s);

            }

            br.close();

            return sb.toString();

            // return sb.toString();

        } catch (Exception e) {

            log.error("Html获取失败！");

            return null;

        }

     }