JSON处理

最新推荐文章于 2021-04-25 18:21:39 发布

原创最新推荐文章于 2021-04-25 18:21:39 发布 · 493 阅读

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1 JSONArray JSONObject

                JSONArray array = JSONArray.fromObject(topics);
		for (int i = 0; i < array.size(); i++) {
			JSONObject jsonObject = array.getJSONObject(i);
			String topicId = jsonObject.getString("topicId");
			String answer = jsonObject.getString("answer");
			map.put(topicId, answer);
		}

2 json-->list-->json

                JsonConfig jsonConfig = new JsonConfig();
		Map<String, Class> classMap = new HashMap<String, Class>();
		classMap.put("answer", String.class);
		classMap.put("imgs", String.class);
		jsonConfig.setClassMap(classMap);
		jsonConfig.setRootClass(HwCompleteContentJson.class);
		JSONArray answerJsonArr = JSONArray.fromObject(answerJson);
		List<HwCompleteContentJson> answerJsonList = new ArrayList<HwCompleteContentJson>();
		//将学生作答json转成HwCompleteJsonBean格式。
		answerJsonList = (List<HwCompleteContentJson>) JSONArray.toCollection(answerJsonArr, jsonConfig);
		JSONArray hwCompleteJsonBeanListArray = JSONArray.fromObject(answerJsonList);
	        String hwCompleteJson = hwCompleteJsonBeanListArray.toString();//学生作答详情jsonStr

<span style="white-space:pre">		</span>List<HwCompleteContentJson> answerJsonList = new ArrayList<HwCompleteContentJson>();

<span style="white-space:pre">		</span>JSONArray answerJsonArr = JSONArray.fromObject(content);
		List<HwCompleteContentJson> answerJsonList = new ArrayList<HwCompleteContentJson>();
		answerJsonList = (List<HwCompleteContentJson>) JSONArray.toCollection(answerJsonArr, HwCompleteContentJson.class);

3. json --> map

Object obj = JSONObject.toBean(JSONObject.fromObject(content),HashMap.class);

JSONObject.fromObject(map)