@RequestBody validation kotlin support improvement [SPR-17085]

[spring-projects-issues]

Viacheslav Petriaiev opened SPR-17085 and commented

Hello, I have the next issue

javax.validation annotations (for example @NotEmpty) is not working properly with kotlin data class

Not working data class

data class User(@NotNull val login: String? = null)

Working data class

data class User(@field:NotNull val login: String? = null)

Thanks

---

Affects: 5.0.7

Issue Links:

• Validation failure not exposed next to binding failure for immutable form class [SPR-16841] #21381 Validation failure not exposed next to binding failure for immutable form class

[spring-projects-issues]

Sébastien Deleuze commented

That's the expected behavior (even if surprising the first time) as described in the reference documentation.