springmvc+mybatis对数据库中数据进行统计求和及计数，显示到jsp页面

…Mapper.xml中统计代码：
略写

//返回结果对象resultType和parameterType都是hashMap对象
<select id="queryStatistic" resultType="java.util.Map"
		parameterType="java.util.HashMap">
		SELECT SUM(DATA_SIZE) collectionNum,
				COUNT(BATCH_ID) collectionDispatch,
				SUM(COLLECT_TIME) collectionDuration,
				COUNT(COLLECT_CYC) collectionAlarm
		FROM tableName
</select>

…controller.java中代码：

@RequestMapping("/list1")
@ResponseBody
public R list1(@RequestParam Map<String, Object> params) {
		//返回的是map对象,key是string类型，value是Integer类型
		Map<String, Integer> statisticList = tbCollectBatchService.queryStatistic(params); 	
		R r = R.ok(); //R是自定义hashMap实体类
		r.put("statisticList", statisticList);
		return r;
}

…jsp中jquery和ajax代码:

$.ajax({
	url : '${basePath}/source/list1.action',//controller中的方法
	type : 'GET',
	data : {
	"id" : id,
	"startTime" : startTime,
	"endTime" : endTime
	},//作为条件的传入参数
	datatype : "json",
	success : function(data) {
		//{COLLECTIONNUM=2000000, COLLECTIONALARM=2, COLLECTIONDISPATCH=2, COLLECTIONDURATION=120}
		var collectionNum0 = parseInt(data.statisticList.COLLECTIONNUM);//controller中返回的statisticList对象中各个参数名称，为避免写错，最好调试看看
		var collectionDispatch0 = parseInt(data.statisticList.COLLECTIONDISPATCH);
		var collectionDuration0 = parseInt(data.statisticList.COLLECTIONDURATION);
		var collectionAlarm0 = parseInt(data.statisticList.COLLECTIONALARM);
		$("#collectionNum0").html(collectionNum);
		$("#collectionDispatch0").html(collectionDispatch);
		$("#collectionDuration0").html(collectionDuration);
		$("#collectionAlarm0").html(collectionAlarm);
	}
});