将 Jackson 转换为 Play Json

Question

我正在尝试将带有 Jackson 注释的类转换为 Play 的 JsObject。据我所知，应该通过将其转换为 JsonNode，然后转换为 JsValue/JsObject 来完成。

val mapper = new ObjectMapper()
mapper.registerModule(DefaultScalaModule)

val jsNode: JsonNode = mapper.valueToTree(status)
val jsValue: JsObject = mapper.treeToValue(jsNode, classOf[JsObject])

但有例外：

com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "anticipatedClosing" (class play.api.libs.json.JsObject), not marked as ignorable (2 known properties: "fields", "value"])
 at [Source: N/A; line: -1, column: -1] (through reference chain: play.api.libs.json.JsObject["anticipatedClosing"])
...

做错了什么？目前我正在转换 Jackson -> String -> Play Json，但它看起来很难看

Answer 1

将 PlayJsonModule 添加到您的 objectMapper

val mapper = new ObjectMapper().registerModule(PlayJsonModule)
val jsValue: JsObject = mapper.treeToValue(jsNode, classOf[JsObject])