List排序 仅限jdk8以上

List<Map<String,Object>> urls = new ArrayList<>();

for () {

Map<String,Object> map = new HashMap<>();
map.put("playurl", prefixUrl + path);
map.put("resultcode", "0");
map.put("definition", definition);

urls.add(map);

}

// 按 definition 升序排序
urls.sort((x, y) -> Integer.compare((Integer) x.get("definition"), (Integer) y.get("definition")));