如何在 finatra 中使用 camelCase 设置响应

Question

我需要 return 一个 json 响应以 camelCase 和 finatra 但默认情况下它是 snake_case。从我目前发现的情况来看，我需要使用 ObjectMapper，但我无法理解创建它后将它传递到哪里。一个例子会很有帮助。这是我拥有的：

import com.twitter.finagle.http.Request
import com.twitter.finatra.http.Controller

class myTargetingController extends Controller {
    val endpoint = "http://....."

    get(s"$endpoint/?") { request: Request =>
        // what do I do with it?
        // val objectMapper = ScalaObjectMapper.builder.camelCaseObjectMapper 
        response.ok.json(myObject)
    }
}

============================================= =====================

import com.twitter.finagle.{Service, SimpleFilter}
import com.twitter.finagle.http.{ Request, Response}
import com.twitter.finatra.http.routing.HttpRouter
import com.twitter.finatra.http.{HttpServer}
import com.twitter.finatra.http.filters.CommonFilters
import com.twitter.util.Future

object MyServerApp extends MyServer

class MyServer extends HttpServer {
override protected def configureHttp(router: HttpRouter) {
    router
        .filter[CommonFilters]
        .add[CorsFilter, MyController]
    }
}

P.S。我对 Scala 非常非常陌生

Answer 1

根据评论跟进

定义自定义 ObjectMapperModule

class CamelCaseModule extends ScalaObjectMapperModule {

    override val propertyNamingStrategy: PropertyNamingStrategy =
      new PropertyNamingStrategy.UpperCamelCaseStrategy

    override def additionalMapperConfiguration(mapper: ObjectMapper): Unit = {
      mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, true)
 }
}

覆盖服务器的默认 Jackson 模块

override def jacksonModule = new CamelCaseModule

确保你有

"com.twitter" %% "finatra-jackson" % yourFinatraVersion % "test"

在你的 build.sbt

并且您导入

import com.fasterxml.jackson.databind.{DeserializationFeature, Module, ObjectMapper, PropertyNamingStrategy}
import com.twitter.finatra.jackson.modules.ScalaObjectMapperModule

在本地测试过，似乎有效希望这有帮助

如何在 finatra 中使用 camelCase 设置响应

how to set response with camelCase in finatra

scala

finagle

finatra