小编Ble*_*ach的帖子

我正在尝试使用 Lombok 的 @SuperBuilder，但由于某种原因我在编译时遇到了问题Error:(14, 1) java: wrong number of type arguments; required 3

那是我的子类；

@SuperBuilder
public class FetchFollowersOperation extends Operation<List<InstagramUserSummary>> {

    private String userName;

    public List<InstagramUserSummary> operate() {

        InstagramSearchUsernameResult userResult = null;
        try {
            userResult = instagram4j.sendRequest(new InstagramSearchUsernameRequest(this.userName));
            InstagramGetUserFollowersResult followers = instagram4j.sendRequest(new InstagramGetUserFollowersRequest(userResult.getUser().getPk()));
            return followers.getUsers();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }
}

父类在下面；

@SuperBuilder
public abstract class Operation<T> {
    protected Instagram4j instagram4j;

    public abstract T operate();
}

我有一个Event类，它使用构建器模式来设置字段，最后将字段添加到JSON对象中。

public class Event{

  private EventProcessor eventProcessor = new EventProcessor();
  private String userName;
  private String userID;

  public Event setUserName(String userName){
     this.userName = userName;
     return this;
  }
  public Event setUserID(String userID){
     this.userID = userID;
     return this;
}

  public void toJson(){
   JSONObject json = new JSONObject();

   if(null != userName)
   json.put("userName", userName);
   if(null != userID)
   json.put("userID", userID);

  // need help to convert json to "event"
   eventProcessor.addToQueue(event);
  }
 }

事件处理器类

  public class EventProcessor{

   static{
  EventQueue eventQueue = new EventQueue<Event>();
 } …