java - 多个Map里面的数据存到同一个json字符串里面，代码如下：

Question

Map<String,Object> map = new HashMap<String,Object>();

map.put("datetime", datetime1);
map.put("distance", re.getString("abe.jyz"));
map.put("lat", re.getDouble("lat"));
map.put("lng", re.getDouble("lng"));
map.put("position", re.getString("pos"));

JSONArray jsonob = JSONArray.fromObject(map);

结果：

map::{position=内蒙测试点, distance=500米以内, lng=111.78015, datetime=2016-07-18 17:51:47, lat=40.848366}
map::{position=内蒙测试点, distance=700米以内, lng=111.78085, datetime=2016-07-18 18:06:47, lat=40.850674}
json::[{"position":"内蒙测试点","distance":"700米以内","lng":111.78085,"datetime":"2016-07-18 18:06:47","lat":40.850674}]

想让这两个map存入同一个json,就像下面一样，而不是只显示最后一个map;

json::[{position=内蒙测试点, distance=500米以内, lng=111.78015, datetime=2016-07-18 17:51:47, lat=40.848366},{"position":"内蒙测试点","distance":"700米以内","lng":111.78085,"datetime":"2016-07-18 18:06:47","lat":40.850674}]

Answer 1

두 개의 지도를 하나의 목록에 넣으면 됩니다.