spring json serialization issue

Question

I am unable to get is_secure object attribute in json response, what is wrong with this code ?

@Configuration
class RouterConfiguration( ) {
    @Bean
    fun testRoutes(testHandler: TestHandler) = coRouter {
        GET("/test", testHandler::testFunction)
    }
}
data class TestClass(
    val is_secure: Int? = 1,
    val xyz: String?
)
@Component
class TestHandler{
    suspend fun testFunction(request: ServerRequest): ServerResponse =
        ServerResponse.ok().bodyValueAndAwait(TestClass(1,"abc"))
}

Akhil Bojedla · Accepted Answer · 2021-12-31 06:36:03Z

2

is prefixed fields (with camelCase or snake_case pattern) are only serialized if they are of type Boolean. You can find more details about it here.

If you wish to keep the is prefix, you may do so by using @get use-site target. Just use @get:JsonProperty("is_secure") on the is_secure field and it should do.

edited Dec 31, 2021 at 6:36

answered Dec 31, 2021 at 5:49

Akhil Bojedla

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2 Comments

pragnesh Over a year ago

Thanks, i tried searching multiple place, but did not find anything.

Akhil Bojedla Over a year ago

Yes, Agreed that the problem itself in not very obvious looking at it. The main reason for this behaviour is that the serializations are in accordance to Java Beans spec §8.3.2 download.oracle.com/otndocs/jcp/… . According to it, is-getters are valid only for boolean properties.

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