@JsonProperty annotation ignored on camel case properties

[fellmann]

Describe the bug
@JsonProperty is ignored sometimes depending on the name of the property.

data class Works(
    @JsonProperty("AbCdE")
    val abc: String
)

data class Broken1(
    @JsonProperty("AbCdE")
    val ABC: String
)

data class Broken2(
    @JsonProperty("AbCdE")
    val aBC: String
)

fun main() {
    val om = jacksonObjectMapper()

    println(om.writeValueAsString(Works("test")))
    // {"AbCdE":"test"}

    println(om.writeValueAsString(Broken1("test")))
    // {"abc":"test"}

    println(om.writeValueAsString(Broken2("test")))
    // {"abc":"test"}
}

To Reproduce
See code above.

Expected behavior
All examples serialize to {"AbCdE":"test"}.

Versions
Kotlin: 1.7.20
Jackson-module-kotlin: 2.13.4
Jackson-databind: 2.13.4.2

[k163377]

@fellmann
First, annotating the getter eliminates this problem.

import com.fasterxml.jackson.annotation.JsonProperty

data class Works(
    @get:JsonProperty("AbCdE")
    val abc: String
)

data class Broken1(
    @get:JsonProperty("AbCdE")
    val ABC: String
)

data class Broken2(
    @get:JsonProperty("AbCdE")
    val aBC: String
)

The root cause is that the name of the getter in the JVM takes precedence, resulting in a discrepancy between the property name and the parameter name on Jackson and a failure to tie the annotation together.
This problem can be resolved by implementing #630.

This issue will be closed as a duplicate of #630.