Hello,

I think there is an issue with the spring-boot-starter-web at v3.5.6.

I have this code : 

@JsonProperty(value = "is_user_available")
private boolean isUserAvailable;

With spring boot v3.5.5, the API return as json : 

{
"is_user_available": true
}

But after upgrading to spring boot v3.5.6, the API return as json : 

{
"userAvailable" : true
}

Did I am the only one that have this issue ?

Thanks in advance, Regards,

BrandonFL

Comment From: wilkinsona

We've not aware of such a problem. 3.5.6 did not include a Jackson upgrade which perhaps would have been the most likely cause. If you would like us to spend some more time investigating, please spend some time providing a complete yet minimal sample that reproduces the problem. You can share it with us by pushing it to a separate repository on GitHub or by zipping it up and attaching it to this issue.

Comment From: apscot

So apparently this is a problem because it is taking the name from the public getMethod of your class. if you write getAvailability() then your json will have { "availability": true }

it will remove get or is part and send that to your json.

@JsonProperty(value = "is_user_available") you can set your property in the private variable. and use jsonIgnore in the get method. it will show is_user_available

Comment From: brandonfl

Here is the reproduction repo :

https://github.com/brandonfl/spring-lombok-issue

With a simple DTO like this :

https://github.com/brandonfl/spring-lombok-issue/blob/f3a291bb9402c994567a963153a649d6e59fca7d/src/main/java/dev/brandonfl/bugtest/TestDTO.java#L10-L17

I get the result : 

{
  "test": {
    "userAvailable": true,
    "is_user_available": true
  }
}

But before the update, I get : 

{
  "test": {
    "is_user_available": true
  }
}

Comment From: brandonfl

You can test by changing the Spring boot starter version on the repo at line 8 of the pom.xml

Spring boot starter v3.5.5 :

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>3.5.5</version>
    <relativePath/> 
</parent>

Result : 

{
  "test": {
    "is_user_available": true
  }
}

Spring boot starter v3.5.6 :

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>3.5.6</version>
    <relativePath/>
</parent>

Result : 

{
  "test": {
    "is_user_available": true,
    "userAvailable": true
  }
}

Comment From: wilkinsona

This is due to a change in Lombok 1.18.40. From its changelog:

IMPROBABLE BREAKING CHANGE: From versions 1.18.16 to 1.18.38, lombok automatically copies certain Jackson annotations (e.g., @JsonProperty) from fields to the corresponding accessors (getters/setters). However, it turned out to be harmful in certain situations. Thus, Lombok does not automatically copy those annotations any more. You can restore the old behavior using the config key lombok.copyJacksonAnnotationsToAccessors = true.

Comment From: Student4everandever

Repo for version 3.4.10 also!

Comment From: snicoll

Thanks for trying to help but the same answer applies.