Gson反序列化为地图

我有这个json字符串，我需要将其反序列化为map：Map

"players_test": [ { "54231f85f8e049c7bd8ac0aba3d1caf7": { "uuid": "54231f85f8e049c7bd8ac0aba3d1caf7", "name": "TomShar", "signup_time": "2014-07-04 16:27:16" } }, { "54231f85f8e049c7bd8ac0aba3d1caf7": { "uuid": "54231f85f8e049c7bd8ac0aba3d1caf7", "name": "TomShar", "signup_time": "2014-07-04 16:27:16" } }, { "54231f85f8e049c7bd8ac0aba3d1caf7": { "uuid": "54231f85f8e049c7bd8ac0aba3d1caf7", "name": "TomShar", "signup_time": "2014-07-04 16:27:16" } } ] 

所以字符串应该是键，然后值应该是它所代表的对象。 我有一个为UUID对象编写的自定义deseriaziler，并且经过测试和工作（所以这不是问题）。

编辑：

我找到了一个更好的JSON结构，我可以用于我的问题，这完全符合我的要求。

 "players": { "54231f85-f8e0-49c7-bd8a-c0aba3d1caf7": { "uuid": "54231f85-f8e0-49c7-bd8a-c0aba3d1caf7", "name": "TomShar", "kills": 0, "assists": 0, "damage_dealt": 0, "time_alive": 0, "dead": false }, "KEY": { "uuid": "KEY", "name": "Name", "kills": 0, "assists": 0, "damage_dealt": 0, "time_alive": 0, "dead": false }, "KEY": { "uuid": "KEY", "name": "Name", "kills": 0, "assists": 0, "damage_dealt": 0, "time_alive": 0, "dead": false } } 

Answer 1

首先，将JSON字符串括在{...} ，然后您可以轻松地将其转换为Map，如下所示：

 class PlayerObject { private String uuid; private String name; private String signup_time; // getters & setters } Gson gson = new Gson(); Type type = new TypeToken>>>(){}.getType(); Map>> map = gson.fromJson(jsonString, type); 

是否可以使地图像： Map玩家？

是的，您可以将其转换为所需的格式，如下所示：

 Map players=new HashMap(); for(Map m:map.get("players_test")){ for(String key:m.keySet()){ players.put(key, m.get(key)); } } System.out.println(new GsonBuilder().setPrettyPrinting().create().toJson(players));