What frameworks are commonly used for JSON processing…

In Kotlin, the following frameworks are commonly used for JSON processing:

Kotlin Serialization: A native library from JetBrains, integrated with the compiler. Supports various formats, including JSON, ProtoBuf, CBOR. Requires annotating data classes.

import kotlinx.serialization.*
import kotlinx.serialization.json.*

@Serializable // Annotation
data class User(val name: String, val age: Int)

fun main() {
    val user = User("Alice", 30)
    val jsonString = Json.encodeToString(user) // Serialization
    println(jsonString) // Output: {"name":"Alice","age":30}

    val decodedUser = Json.decodeFromString<User>(jsonString) // Deserialization
    println(decodedUser) // Output: User(name=Alice, age=30)
}

Jackson: A powerful and mature framework with extensive customization options and support for various data formats. Widely used in the Java ecosystem.

import com.fasterxml.jackson.databind.ObjectMapper

data class User(val name: String, val age: Int)

fun main() {
    val mapper = ObjectMapper()
    val user = User("Alice", 30)
    val jsonString = mapper.writeValueAsString(user) // Serialization
    println(jsonString) // Output: {"name":"Alice","age":30}

    val decodedUser = mapper.readValue(jsonString, User::class.java) // Deserialization
    println(decodedUser) // Output: User(name=Alice, age=30)
}

Gson: Another popular framework from Google. Easy to use, suitable for most tasks.

import com.google.gson.Gson

data class User(val name: String, val age: Int)

fun main() {
    val gson = Gson()
    val user = User("Alice", 30)
    val jsonString = gson.toJson(user) // Serialization
    println(jsonString) // Output: {"name":"Alice","age":30}

    val decodedUser = gson.fromJson(jsonString, User::class.java) // Deserialization
    println(decodedUser) // Output: User(name=Alice, age=30)
}

The choice of framework depends on the project and preferences. Kotlin Serialization is often the preferred choice in pure Kotlin projects due to native integration. Jackson and Gson are good options if they are already used in the project or if a wide range of features and flexibility are required.

What frameworks are commonly used for JSON processing in Kotlin?