Java 接口返回格式封装

初始是这样的：

@PostMapping("/parentId")
public Result listByParentId(@RequestBody Map<String,String> map) {
    String regionId = map.get("regionId");
    //获取用户有权限查看的车站ID集合
    Set<String> stationIds = this.getStationIds();
    List<String> ids = new ArrayList<>(stationIds);
    return Result.ok(stationRegionTreeService.listByParent(regionId, ids));
}

返回的数据的格式为：

{

"data":  [

             {

                "id": "734",

                "relaTreeId": "734",

                "parent": "1",

     }
    ]
}

修改后：

    @GetMapping("/parentId")
    public Result listByParentId(String regionId) {
        Set<String> stationIds = this.getStationIds();
        List<String> ids = new ArrayList<>(stationIds);
        List<StationRegionTree> stationRegionTrees = stationRegionTreeService.listByParent(regionId, ids);
        HashMap<Object, List<StationRegionTree>> map = new HashMap<>();
        map.put("content",stationRegionTrees);
        return Result.ok(map);
    }

{

    "data": {

        "content": [

            {

                "id": "734",

                "relaTreeId": "734",

                "parent": "1",

}