如何使用ObjectMapper映射索引的JSON

Question

如何使用com.fasterxml.jackson.databind.ObjectMapper将这样的JSON映射到对象列表中：

{
  "1": {
    "id": 1,
    "name": "Peter Parker",
    "alias": "peter"
  },
  "2": {
    "id": 2,
    "name": "Berry Allen",
    "alias": "berry"
  },
  "3": {
    "id": 3,
    "name": "Tony Stark",
    "alias": "tony"
  }
}

我特别挣扎着索引号码。如果没有这些连续的数字，我会做类似以下的事情，这是正常的＆＃39;正常＆＃39;对象数组很好。

ObjectMapper mapper = new ObjectMapper();
List<People> people = mapper.readValue(jsonString, new TypeReference<List<People>>(){});

我希望有人可以帮助我。提前谢谢。

Answer 1

JSON结构代表地图，而不是列表：

ObjectMapper mapper = new ObjectMapper();
Map<String, People> peopleMap = mapper.readValue(jsonString, new TypeReference<Map<String, People>>(){});
Collection<People> allPeople = peopleMap.values();