json疑难杂症

Question

我对下面的一个json解析遇到了一些问题，请求帮忙。这个json是外层和内层一样的，而且据客户说最里面的"friend": "John","mutual": true还会根据"activityType": "addedFriend",来变。想不出来这个json的映射类怎么写。{
  "activityType": "experienceGained",
  "user": "Bert",
  "attributes":
  {
    "XPpoints": 1500,
    "originalActivity":
    {
      "activityType": "addedFriend",
      "user": "Bert",
      "attributes":
      {
        "friend": "John",
        "mutual": true
      }
    }
  }

Answer 1

利用接口来做Define Interface A, then define class B or class or others according to activityType
class OutJSON {
  private String activityType;
  private String user;
  private Attributes attributes:
}class Attributes {
    private A a;
}
interface A{}基本就是这个思路

Answer 2

有点不太明白，换个方式问吧下面是json数据
{
  "activities":
  {
    "easfc_club_promoted":
    {
      "attributes":
      {
        "team_id":2,
        "from_league_id":1,
        "to_league_id":2
      }
    }
  }
}
怎么创建对应的类

Answer 3

public class Activities{
    public Easfc_club_promoted easfc_club_promoted;
    public int team_id;
    public int from_league_id;
    public int to_league_id;
}public class Easfc_club_promoted {
    public Attributes attributes;
}

Answer 4

自己解决了，不过还要谢谢各位@JsonSerialize
public class activities
{    private Map<String, attributes> activities;    /**
     * @return the activities
     */
    public Map<String, attributes> getActivities()
    {
        return activities;
    }    /**
     * @param activities the activities to set
     */
    public void setActivities(Map<String, attributes> activities)
    {
        this.activities = activities;
    }}
@JsonSerialize
public class attributes
{
    private Map<String, Integer> attributes;    /**
     * @return the attributes
     */
    public Map<String, Integer> getAttributes()
    {
        return attributes;
    }    /**
     * @param attributes the attributes to set
     */
    public void setAttributes(Map<String, Integer> attributes)
    {
        this.attributes = attributes;
    }
}

Answer 5

  "attributes":
  {
  "friend": "John",
  "mutual": true
  }
"originalActivity":
  {
  "activityType": "addedFriend",
  "user": "Bert",
  "attributes":
  {
  "friend": "John",
  "mutual": true
  }
"attributes":
  {
  "XPpoints": 1500,
  "originalActivity":
  {
  "activityType": "addedFriend",
  "user": "Bert",
  "attributes":
  {
  "friend": "John",
  "mutual": true
  }
  }
{
  "activityType": "experienceGained",
  "user": "Bert",
  "attributes":
  {
  "XPpoints": 1500,
  "originalActivity":
  {
  "activityType": "addedFriend",
  "user": "Bert",
  "attributes":
  {
  "friend": "John",
  "mutual": true
  }
  }
  }这样应该可以了吧？