globally configure Json type id？

[hidao]

By default, Jackson includes the @class information during serialization and deserialization(default @JsonTypeInfo(use = JsonTypeInfo.Id.CLASS)). When I refactor and change the class path, deserialization fails. I know that I can configure it on each class using @JsonTypeInfo(use =JsonTypeInfo.Id.NONE ), but it can be cumbersome. Is there a way to globally configure it using the DeserializationFeature?

[JooHyukKim]

Can you provide

• an example code of how you want it to work
• what are currently used Jackson annotations, ObjectMapper configurations are?

I only partially understood the problem and expected solution here 🤔

[hidao]

Sorry, I have some issues with my description. Let me make some modifications.

[hidao]

When I serialized it, the json string was

{
   "@class": "com.test1.dto.VsimStateDTO",
   "imsi": "084988881692095262",
   "sn": "vvv504cdd8b3be18",
   "sessionId": "0189f8bc-b0a6-7144-b4f8-bca528589702"
}

, but due to subsequent refactoring, my class:

package com.test2.fsm.dto;

import lombok.*;
import java.io.Serializable;
import java.time.LocalDateTime;
import java.util.Objects;
@Getter
@Setter
@ToString
@Builder
@NoArgsConstructor
@AllArgsConstructor
public class VsimStateDTO {

   private String imsi;

    private String sn;

    private String sessionId;
}

. The class package path is changed, If I use the default configuration , deserialization will throw an error.

[cowtowncoder]

Jackson does NOT by default include any type id -- these are only added if @JsonTypeInfo annotation is added to the base class OR "default typing" is enabled.
Use of default typing is discouraged: it should not be used unless one really knows what they are doing.
I am guessing you are enabling that for some reason: it is better not to do that and add explicit @JsonTypeInfo where type id is needed.

Aside from that, example seems to use Lombok which adds its own possible complications. I am not quite sure what exactly is being asked here th0.

[hidao]

Thank you! I got it!

[JooHyukKim]

Are you okay with selecting above as an answer? @hidao ?

PS so others can come and easily find what they need