I need to receive 4 different request bodies in th...

# spring

[João Gabriel Zó]

I need to receive 4 different request bodies in the same endpoint, is there a simple way to do it?

[Francis Altomare]

This is not really Spring specific but you could use a sealed class and JSON subtypes

@JsonTypeInfo(use = DEDUCTION)
@JsonSubTypes(
    Type(A::class),
    Type(B::class),
)
sealed class MyRequest {
   data class A(val someInt: Int) : MyRequest()
   data class B(val someString: String, val someOtherType: Float) : MyRequest()
}

@PostMapping
fun someControllerMethod(@RequestBody myRequest: MyRequest) = when(myRequest) {
}

[João Gabriel Zó]

thanks!

[João Gabriel Zó]

it’s not really working because the bodies are too similar. Only a couple fields are dropped or added from one class to the other so jackson seems to get confused.

[Francis Altomare]

there are options other than DEDUCTION that will let you use a selector to determine the type

[eddMX]

U have to map the little changes in your DTOs and initialize on nulls the other name of values

[eddMX]

Using ? Operator

[eddMX]

Or validate the data before to use

[Jacob]

use this https://github.com/FasterXML/jackson-docs/wiki/JacksonPolymorphicDeserialization