kotlin使用retrofit得到一条简单的消息

data class Message(val message: String)

interface ApiService {
    @GET("api/message")
    fun getMessage(): Call<Message>
}

val retrofit = Retrofit.Builder()
    .baseUrl("https://api.example.com/")
    .build()

val apiService = retrofit.create(ApiService::class.java)

apiService.getMessage().enqueue(object : Callback<Message> {
    override fun onResponse(call: Call<Message>, response: Response<Message>) {
        if (response.isSuccessful) {
            val message = response.body()?.message
            // 处理消息
        } else {
            // 请求失败
        }
    }

    override fun onFailure(call: Call<Message>, t: Throwable) {
        // 请求失败
    }
})