使用gson在java中读取json对象文件保持为空

Question

当我尝试阅读时，我一直为null 。

json文件

{
  "team": {
   "name": "john 1",
   "id": "12345"
    }
 }

试图通过 POJO 做到这一点

public class Team {

    private String name;
    private String id;

    public String getName(){
        return name;
    }
}

我的主要

public static void main(String[] args) throws IOException {
    Gson gson = new Gson();

    BufferedReader br = new BufferedReader(new 
    FileReader("C:/Users/John/Desktop/back.json"));

    Team test = gson.fromJson(br, Team.class);

    System.out.println(getName());
}

Answer 1

根据上面的 JSON 结构，您应该拥有 POJO 与财产team

public class Response {

  private Team team

  //getters and setters
   }

和 POJO Team

public class Team {

  private String name;
  private String id;

  // getters and setters
  }

在Main类

Response test = gson.fromJson(br, Response.class);  //from this get Team
Team team = test.getTeam();