kotlinx.serialization : How to parse to different varaiable name than the exact name of JSON key

Issue

With GSON we used @SerializedName to parse JSON object which didn't have the same key to that of the variable name in Kotlin.

data class User (
    @SerializedName("id")
    long userId;
    @SerializedName("fullName")
    String name;
)

In kotlinx.serialization we can serialize an object like this but how to give different JSON key to a varaible during (de)serialization?

@Serializable
data class User (
    long userId;
    String name;
)

Solution

Use @SerialName like we used @SerializedName in GSON

GSON

data class User (
    @SerializedName("id")
    long userId;
    @SerializedName("fullName")
    String name;
)

kotlinx.serialization

@Serializable
data class User (
    @SerialName("id")
    long userId;
    @SerialName("fullName")
    String name;
)

Answered By - erluxman