Scala如何将jsonast.jvalue转换为类型

Question

我有一个角度应用程序，该应用像这样向服务器发布请求：

$scope.downloadPartDetails = (parts, e) ->
    req = {
      method: 'POST',
      url: '/downloads/partdetails',
      headers: {
        'Content-Type': "application/json; charset=utf-8"
      },
      data: { parts: [
        {manufacturer: "mfr1", partNumber: "part num1"},
        {manufacturer: "mfr2", partNumber: "part num2"},
        {manufacturer: "mfr3", partNumber: "part num3"}
      ] }
    }
    $http(req)

它出现在这样的服务器上：

JArray(List(JObject(List(JField(manufacturer,JString(mfr1)), JField(partNumber,JString(part num1)))), JObject(List(JField(manufacturer,JString(mfr2)), JField(partNumber,JString(part num2)))), JObject(List(JField(manufacturer,JString(mfr3)), JField(partNumber,JString(part num3))))))

有没有办法将其转换为列表[部分]？

case class Part(mfr: String, pn: String)

Answer 1

如果您在JSON中使用相同的字段名称和Case class

case class Part(manufacturer: String, partNumber: String)
val part: Part = jvalue.extract[Part]

如果您无法更改案例类中的字段名称，则需要实现自定义序列化器，如此处所述，请使用JSON4S