如何使用fastxml.jackson将Hashmap JSON数据隐藏到POJO

Question

我无法使用Fasterxml / jackson将以下JSON数据转换为JAVA POJO

{
    "listofMeetings": {
        "0034B00000X2zPmQAJ": {
            "to_do_order": 1,
            "to_do_action_type": "Scheduled Meet/Call",
            "to_do_action_type_id": "TD1",
            "userId": "290bd895fbc98e35cdc0"
        },
        "0034B00000X2iqBQAR": {
            "to_do_order": 2,
            "to_do_action_type": "Routine Follow Up",
            "to_do_action_type_id": "TD2",
            "userId": "b5782c97fcabd9250fd5"
        }
    },
    "clientList": {
        "b5782c97fcabd9250fd5": {
            "firstName": "test1656",
            "lastName": "sap1903",
            "userId": "b5782c97-fe64-440f-95a1-fcabd9250fd5",
            "email": "47121552994774000@randomgenerated.com"
        },
        "290bd895fbc98e35cdc0": {
            "firstName": "1903s6",
            "lastName": "1903s6",
            "userId": "290bd895-40b6-4f49-84f9-fbc98e35cdc0",
            "email": "1903s6@mailinator.com"
        }
    },
    "filteredCount": 2
}

我尝试使用HashMap和Map，但出现以下异常 例外：

  

java.lang.IllegalArgumentException：com.fasterxml.jackson.databind.JsonMappingException：无法从START_OBJECT令牌中反序列化java.util.ArrayList实例

我创建了以下POJO类

public class DetailsResponse implements Parcelable { 
    public DetailsResponse() {
    }

    private int filteredCount;
    public HashMap<String, MeetingDetailsResponse> listofMeetings;
    private HashMap<String, ContractInfo> clientList;

    protected DetailsResponse(Parcel in) {
        // ....
    }

    public static final Creator<DetailsResponse> CREATOR = new Creator<DetailsResponse>() {
        // ...
    };

    public HashMap<String, ContractInfo> getClientList() {
        return clientList;
    }

    public void setClientList(HashMap<String, ContractInfo> clientList) {
        this.clientList = clientList;
    }

    public int getFilteredCount() {
        return filteredCount;
    }

    public void setFilteredCount(int filteredCount) {
        this.filteredCount = filteredCount;
    }

    public HashMap<String, MeetingDetailsResponse> getListofMeetings() {
        return listofMeetings;
    }

    public void setListofMeetings(HashMap<String, MeetingDetailsResponse> listofMeetings) {
        this.listofMeetings = listofMeetings;
    }

    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public void writeToParcel(Parcel dest, int flags) {
        // ...
    }
}

public class MeetingDetailsResponse implements Parcelable {
    String to_do_order;
    String to_do_action_type;
    String to_do_action_type_id;
    String userId;

    public MeetingDetailsResponse() {
    }

    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public void writeToParcel(Parcel parcel, int i) {
    }

    public static final Creator<MeetingDetailsResponse> CREATOR = new Creator<MeetingDetailsResponse>() {
        @Override
        public MeetingDetailsResponse createFromParcel(Parcel in) {
            return new MeetingDetailsResponse(in);
        }

        @Override
        public MeetingDetailsResponse[] newArray(int size) {
            return new MeetingDetailsResponse[size];
        }
    };

    protected MeetingDetailsResponse(Parcel in) {
    }

    public String getTo_do_order() {
        return to_do_order;
    }

    public void setTo_do_order(String to_do_order) {
        this.to_do_order = to_do_order;
    }

    public String getTo_do_action_type() {
        return to_do_action_type;
    }

    public void setTo_do_action_type(String to_do_action_type) {
        this.to_do_action_type = to_do_action_type;
    }

    public String getTo_do_action_type_id() {
        return to_do_action_type_id;
    }

    public void setTo_do_action_type_id(String to_do_action_type_id) {
        this.to_do_action_type_id = to_do_action_type_id;
    }

    public String getUserId() {
        return userId;
    }

    public void setUserId(String userId) {
        this.userId = userId;
    }
}

public class ContactInfo implements Parcelable {
    private String userId;
    private String firstName;
    private String lastName;
    private String email;

    public static final Creator<ContactInfo> CREATOR = new Creator<ContactInfo>() {
        // ....
    }

    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public void writeToParcel(Parcel dest, int flags) {
        // ....
    }

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getUserId() {
        return userId;
    }

    public void setUserId(String userId) {
        this.userId = userId;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }
}