我有一个带有字符串列表字段的案例类,但我无法从 JSON 解析它。我已经定义了一个 JSON 阅读器:
val jsonReader = new JsonReader[PeaceWatcherReport] {
override def read(json: JsValue): PeaceWatcherReport = {
val fields = json.asJsObject.fields;
new PeaceWatcherReport(
fields("id").convertTo[String],
LocalDateTime.parse(fields("date").convertTo[String]),
fields("location").convertTo[String],
JsArray(fields("surroundingCitizens")).convertTo[Seq[String]].toList,
JsArray(fields("heardWords")).convertTo[Seq[String]].toList
);
}
}
我使用它如下:
val report : PeaceWatcherReport = JsonParser(record.value().toString).convertTo[PeaceWatcherReport](PeaceWatcherReport.jsonReader);
我收到以下错误:
<块引用>期望字符串为 JsString,但得到 ["0cb9f193-792b-4b99-a4f3-f7510f10d62b","673229b2-4b ba-4faf-a0cf-30cc58ae9c6c","65148ea2-5140-401f-99db-7d4c1bf2d636","3f1a6c1c-a527-40a8-a690-9f6db7016862d8-ac8-ac82-d8-ac8-24-bf24 5d7601d3"]
我做错了什么?
提前致谢
答案 0 :(得分:0)
事实上我不需要使用 JsonArray
因为它已经是一个 :
val jsonReader = new JsonReader[PeaceWatcherReport] {
override def read(json: JsValue): PeaceWatcherReport = {
val fields = json.asJsObject.fields;
new PeaceWatcherReport(
fields("id").convertTo[String],
LocalDateTime.parse(fields("date").convertTo[String]),
fields("location").convertTo[String],
fields("surroundingCitizens").convertTo[Seq[String]].toList,
fields("heardWords").convertTo[Seq[String]].toList
);
}
}