java - Apache Commons DiffBuilder

Question

我试图找出两个对象之间的差异，但里面有实例、实例列表、其他类的实例。根据差异，我正在生成一个增量文件，该文件将用于更新数据库。

我使用 JSoniter 将 JSON 与对象进行匹配，结果如下所示:

public class Accommodation implements Diffable<Accommodation> {
    public String HotelCode;
    public String HotelName;
    public String SupplierCruising;
    public String SupplierHeadline;
    public Rooms Rooms;

    @Override
    public DiffResult diff(Accommodation accommodation) {

        DiffBuilder db = new DiffBuilder(this, accommodation, ToStringStyle.SHORT_PREFIX_STYLE)
            .append("HotelCode", this.HotelCode, accommodation.HotelCode)
            .append("HotelName", this.HotelName, accommodation.HotelName)
            .append("SupplierCruising", this.SupplierCruising, accommodation.SupplierCruising)
            .append("SupplierHeadline", this.SupplierHeadline, accommodation.SupplierHeadline)
            .append("Rooms", this.Rooms, accommodation.Rooms);


        return db.build();
    }
}

public class Rooms implements Diffable<Rooms>{
    public List<Room> Room;


    @Override
    public DiffResult diff(Rooms rooms) {

        DiffBuilder db = new DiffBuilder(this, rooms, ToStringStyle.DEFAULT_STYLE)
            .append("Room", this.Room, rooms.Room);

        return db.build();
    }

}

public class Room implements Diffable<Room>{

    public String RoomCode;
    public String RoomAvailability;
    public String RoomName;
    public String MaxOccupancy;
    public List<String> SupplementPrice;

    @Override
    public DiffResult diff (Room room) {

        DiffBuilder db = new DiffBuilder(this, room, ToStringStyle.SHORT_PREFIX_STYLE)
            .append("RoomCode", this.RoomCode, room.RoomCode)
            .append("RoomAvailability", this.RoomAvailability, room.RoomAvailability)
            .append("RoomName", this.RoomName, room.RoomName)
            .append("MaxOccupancy", this.MaxOccupancy, room.MaxOccupancy)
            .append("SupplementPrice", this.SupplementPrice, room.SupplementPrice);



    return db.build();
}

Tour 有一个 Rooms 对象的实例，该实例有一个 Room 对象列表。

DiffBuilder 使用 Accommodation 内的字符串变量，但是当涉及到 Rooms 和 Room 的实例时，它只是声明它们是不同的(出于测试目的，我确保它们是相同的)，

DiffBuilder 有办法这样工作吗？或者，如果有人有其他建议，请放弃。

(注意:这些类位于单独的文件中。仅出于显示目的，它们是这样的)

Answer 1

我知道有点晚了，但我有同样的情况并做了解决方法，房间有一个房间列表，您正在比较列表而不是单个 Room对象

DiffBuilder db = new DiffBuilder(this, rooms, ToStringStyle.DEFAULT_STYLE)
                .append("Room", this.Room, rooms.Room);

相反，您需要迭代列表并比较每个 Room 对象

DiffBuilder db = new DiffBuilder(this, rooms, ToStringStyle.DEFAULT_STYLE);
for(int i =0; i< Room.size(); i++) {
    db.append("room", this.Rooms.Room.get(i).diff(rooms.Room.get(i)));
}
return db.build();

注意:考虑 List<Room> 的大小两个对象都是相同的