Json反序列化遇到的问题

//这是我的swagger01.json 下面的代码针对这个json进行反序列化
{
  "swagger": "2.0",
  "info": {
    "description": "这是一个swagger2小型demo",
    "version": "0.0.1",
    "title": "springboot结合swagger2构建Restful API",
    "termsOfService": "www.baidu.com",
    "contact": { "name": "xujiayi" }
  },
  "host": "localhost:8080",
  "basePath": "/",
  "tags": [
    {
      "name": "user-controller",
      "description": "User Controller"
    }
  ],
  "paths": {
    "/users": {
      "get": {
        "tags": [ "user-controller" ],
        "summary": "获取用户列表",
        "operationId": "getListUsingGET",
        "consumes": [ "application/json" ],
        "produces": [ "*/*" ],
        "responses": {
          "200": {
            "description": "OK",
            "schema": {
              "type": "array",
              "items": { "$ref": "#/definitions/User" }
            }
          },
          "401": { "description": "Unauthorized" },
          "403": { "description": "Forbidden" },
          "404": { "description": "Not Found" }
        }
      },
      "post": {
        "tags": [ "user-controller" ],
        "summary": "创建用户",
        "description": "根据user对象创建用户",
        "operationId": "postUserUsingPOST",
        "consumes": [ "application/json" ],
        "produces": [ "*/*" ],
        "parameters": [
          {
            "in": "body",
            "name": "user",
            "description": "用户信息实体类",
            "required": true,
            "schema": { "$ref": "#/definitions/User" }
          }
        ],
        "responses": {
          "200": {
            "description": "OK",
            "schema": { "type": "string" }
          },
          "201": { "description": "Created" },
          "401": { "description": "Unauthorized" },
          "403": { "description": "Forbidden" },
          "404": { "description": "Not Found" }
        }
      }
    },
    "/users/{id}": {
      "get": {
        "tags": [ "user-controller" ],
        "summary": "获取用户信息",
        "description": "根据url的id来获取用户信息",
        "operationId": "getUserByIdUsingGET",
        "consumes": [ "application/json" ],
        "produces": [ "*/*" ],
        "parameters": [
          {
            "name": "id",
            "in": "path",
            "description": "用户id",
            "required": true,
            "type": "integer",
            "format": "int64"
          }
        ],
        "responses": {
          "200": {
            "description": "OK",
            "schema": { "$ref": "#/definitions/User" }
          },
          "401": { "description": "Unauthorized" },
          "403": { "description": "Forbidden" },
          "404": { "description": "Not Found" }
        }
      },
      "put": {
        "tags": [ "user-controller" ],
        "summary": "更新用户信息",
        "description": "根据url的id来指定对象，并且根据传过来的user进行用户基本信息更新",
        "operationId": "putUserUsingPUT",
        "consumes": [ "application/json" ],
        "produces": [ "*/*" ],
        "parameters": [
          {
            "name": "id",
            "in": "path",
            "description": "用户id",
            "required": true,
            "type": "integer",
            "format": "int64"
          },
          {
            "in": "body",
            "name": "user",
            "description": "用户信息实体类user",
            "required": true,
            "schema": { "$ref": "#/definitions/User" }
          }
        ],
        "responses": {
          "200": {
            "description": "OK",
            "schema": { "type": "string" }
          },
          "201": { "description": "Created" },
          "401": { "description": "Unauthorized" },
          "403": { "description": "Forbidden" },
          "404": { "description": "Not Found" }
        }
      },
      "delete": {
        "tags": [ "user-controller" ],
        "summary": "删除用户",
        "description": "根据url的id来指定对象，进行用户信息删除",
        "operationId": "delUserUsingDELETE",
        "consumes": [ "application/json" ],
        "produces": [ "*/*" ],
        "parameters": [
          {
            "name": "id",
            "in": "path",
            "description": "用户id",
            "required": true,
            "type": "integer",
            "format": "int64"
          }
        ],
        "responses": {
          "200": {
            "description": "OK",
            "schema": { "type": "string" }
          },
          "401": { "description": "Unauthorized" },
          "204": { "description": "No Content" },
          "403": { "description": "Forbidden" }
        }
      }
    }
  },
  "definitions": {
    "User": {
      "type": "object",
      "properties": {
        "age": {
          "type": "integer",
          "format": "int32"
        },
        "id": {
          "type": "integer",
          "format": "int64"
        },
        "name": { "type": "string" }
      }
    }
  }
}

 反序列化代码：

@org.junit.Test
    public void readSwaggerJson() {
        ObjectMapper objectMapper = new ObjectMapper();
        File json = new File("C:\\Users\\45316\\Desktop\\swagger01.json");
        try {
            Map<String, Map<String, Map<String, Map<String, List<Map<String, Map<String, String>>>>>>> map = objectMapper.readValue(json, Map.class);
            System.out.println(map.get("definitions"));
            System.out.println(map.get("paths").get("/users").get("post").get("responses").getClass());
        } catch (JsonParseException e) {
            e.printStackTrace();
        } catch (JsonMappingException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

 

想问下大家，map.get("paths").get("/users").get("post").get("responses")这里都能返回对象，一加上getClass()就报类型转换异常，我知道get("responses")返回的不是List类型，但我就单纯的想得到对象所对应的类型为什么不可以？我并没有把LinkedHashMap强转为List啊