JSON format processing

json Format requirements ：

{
    
	"app": "apps",
	"type": "operate",
	"data": [{
    
		"time": 1478055271575, 
		"user_id": "450000", 
		"username": " Duxiaolie " 
	}]
}

Java Code Splicing ：

Map<String,String> map = new HashMap<>{
    };
List<Event_CM> eventList = isServiceMapper.selectUser();
//  Not much data can be found , Directly joining together 
map.put("app", "apps");
map.put("type", "operate");
map.put("data", eventList);
//  Convert to json
String paramJson = mapper.writeValueAsString(map);

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remarks ： Don't read the following .
If you find eventList Too much , Need to cut .

Map<String,String> map = new HashMap<>{
    };
List<Event_CM> eventList = isServiceMapper.selectUser();

List<List<Event_CMVo>> eventBatchList = null;
//  Cutting method (splitList() The method of company encapsulation )
eventBatchList = splitList(event_cmVoList, 100);
	for (List<Event_CMVo> eventBatch : eventBatchList) {
    
		map.put("app", "apps");
		map.put("type", "operate");
		map.put("data", eventBatch);
		String paramJson = mapper.writeValueAsString(map);
		//  send out http agreement .( Company encapsulated interfaces )
		/** *  Parameter one ： The goal is URL *  Parameter two ： As a substitute URL( The goal is URL When it's empty , Use substitute URL) *  Parameter 3 ： Parameters sent  *  Parameter 4 ： type  */
		String resultJson = CloseableHttpClientNewUtil.postJson(Configuration.get().getString("EventCM_URL", "http://xx.xxx.xx.79:8080"), paramJson, "UTF-8");
	}