Scala CustomSerializer类代码示例

//设置package包名称以及导入依赖的类
package uk.gov.hmrc.utils.json

import java.net.{URI, URL}

import org.json4s.JsonAST.JString
import org.json4s.jackson.JsonMethods.parse
import org.json4s.{CustomSerializer, DefaultFormats, Formats, JNull}

object JsonExtraction {

  val formats = DefaultFormats + json4sDateTimeSerializer + json4sLocalDateSerializer + UriSerializer + UrlSerializer + Json4sIntToBigDecimalSerializer

  def apply[A](body: String)(implicit m: Manifest[A], formats: Formats = formats): A = extractResponse[A](body)

  private def extractResponse[A](body: String)(implicit m: Manifest[A], format: Formats = formats): A = Option(body) match {
    case Some(b) if b.length > 0 =>
      try {
        parse(b, useBigDecimalForDouble = true).extract
      } catch {
        case t: Throwable =>
          throw t
      }
    case _ => throw new IllegalArgumentException("A string value is required for transformation")
  }

  case object UriSerializer extends CustomSerializer[URI](format => ( {
    case JString(uri) => URI.create(uri)
    case JNull => null
  }, {
    case uri: URI => JString(uri.toString)
  }
  ))

  case object UrlSerializer extends CustomSerializer[URL](format => ( {
    case JString(url) => new URL(url)
    case JNull => null
  }, {
    case url: URL => JString(url.toString)
  }
  ))

} 

//设置package包名称以及导入依赖的类
package org.goingok.data.persistence.db.postgresql

import java.time.OffsetDateTime
import java.util.UUID

import org.json4s.JsonAST.JString
import org.json4s.{CustomSerializer, _}


object UuidSerializer extends CustomSerializer[UUID](format =>
  (
    {
      case JString(s) => UUID.fromString(s)
      case JNull => null
    },
    {
      case x: UUID => JString(x.toString)
    }
  )
)

object OffsetDateTimeSerializer extends CustomSerializer[OffsetDateTime](format => (
  {
    case JString(s) => OffsetDateTime.parse(s)
    case JNull => null
  },
  {
    case o:OffsetDateTime => JString(o.toString)
  }
)
) 

//设置package包名称以及导入依赖的类
package org.argus.amandroid.serialization

import org.argus.amandroid.core.decompile.DecompileLayout
import org.argus.jawa.core.util.{FileResourceUri, ISet}
import org.json4s.{CustomSerializer, Extraction, JValue}
import org.json4s.JsonDSL._


object DecompileLayoutSerializer extends CustomSerializer[DecompileLayout](format => (
  {
    case jv: JValue =>
      implicit val formats = format
      val outputUri  = (jv \ "outputUri").extract[FileResourceUri]
      val createFolder = (jv \ "createFolder").extract[Boolean]
      val srcFolder = (jv \ "srcFolder").extract[String]
      val libFolder = (jv \ "libFolder").extract[String]
      val createSeparateFolderForDexes = (jv \ "createSeparateFolderForDexes").extract[Boolean]
      val pkg = (jv \ "pkg").extract[String]
      val outputSrcUri = (jv \ "outputSrcUri").extract[FileResourceUri]
      val sourceFolders = (jv \ "sourceFolders").extract[ISet[String]]
      val libFolders = (jv \ "libFolders").extract[ISet[String]]
      val dependencies = (jv \ "dependencies").extract[ISet[String]]
      val thirdPartyLibraries = (jv \ "thirdPartyLibraries").extract[ISet[String]]
      val layout = DecompileLayout(outputUri, createFolder, srcFolder, libFolder, createSeparateFolderForDexes)
      layout.pkg = pkg
      layout.outputSrcUri = outputSrcUri
      layout.sourceFolders = sourceFolders
      layout.libFolders = libFolders
      layout.dependencies = dependencies
      layout.thirdPartyLibraries = thirdPartyLibraries
      layout
  },
  {
    case layout: DecompileLayout =>
      implicit val formats = format
      val outputUri: FileResourceUri = layout.outputSrcUri
      val createFolder: Boolean = layout.createFolder
      val srcFolder: String = layout.srcFolder
      val libFolder: String = layout.libFolder
      val createSeparateFolderForDexes: Boolean = layout.createSeparateFolderForDexes
      val pkg: String = layout.pkg
      val outputSrcUri: FileResourceUri = layout.outputSrcUri
      val sourceFolders: ISet[String] = layout.sourceFolders
      val libFolders: ISet[String] = layout.libFolders
      val dependencies: ISet[String] = layout.dependencies
      val thirdPartyLibraries: ISet[String] = layout.thirdPartyLibraries
      ("outputUri" -> outputUri) ~
      ("createFolder" -> createFolder) ~
      ("srcFolder" -> srcFolder) ~
      ("libFolder" -> libFolder) ~
      ("createSeparateFolderForDexes" -> createSeparateFolderForDexes) ~
      ("pkg" -> pkg) ~
      ("outputSrcUri" -> outputSrcUri) ~
      ("sourceFolders" -> Extraction.decompose(sourceFolders)) ~
      ("libFolders" -> Extraction.decompose(libFolders)) ~
      ("dependencies" -> Extraction.decompose(dependencies)) ~
      ("thirdPartyLibraries" -> Extraction.decompose(thirdPartyLibraries))
  }
)) 

//设置package包名称以及导入依赖的类
package no.ndla.articleapi.model.search

import org.json4s.JsonAST.{JArray, JField, JObject, JString}
import org.json4s.{CustomSerializer, MappingException}
import no.ndla.articleapi.model.domain.Language.UnknownLanguage

class SearchableLanguageValueSerializer extends CustomSerializer[SearchableLanguageValues](format => ( {
  case JObject(items) => SearchableLanguageValues(items.map {
    case JField(name, JString(value)) => LanguageValue(Some(name), value)
  })
}, {
  case x: SearchableLanguageValues =>
    JObject(x.languageValues.map(languageValue => JField(languageValue.lang.getOrElse(UnknownLanguage), JString(languageValue.value))).toList)
}))


class SearchableLanguageListSerializer extends CustomSerializer[SearchableLanguageList](format => ( {
  case JObject(items) => {
    SearchableLanguageList(items.map{
      case JField(name, JArray(fieldItems)) => LanguageValue(Some(name), fieldItems.map{
        case JString(value) => value
        case x => throw new MappingException(s"Cannot convert $x to SearchableLanguageList")
      }.to[Seq])
    })
  }
}, {
  case x: SearchableLanguageList =>
    JObject(x.languageValues.map(languageValue => JField(languageValue.lang.getOrElse(UnknownLanguage), JArray(languageValue.value.map(lv => JString(lv)).toList))).toList)
}))

object SearchableLanguageFormats {
  val JSonFormats = org.json4s.DefaultFormats + new SearchableLanguageValueSerializer + new SearchableLanguageListSerializer
} 

//设置package包名称以及导入依赖的类
package com.ntsdev.connect4.wire

import com.ntsdev.connect4.model.Cell
import org.json4s.CustomSerializer
import org.json4s.JsonAST.{JField, JObject, JString}



class OptionCellSerializer extends CustomSerializer[Option[Cell]](format => (
  {
    case JObject(JField("cell", JString(s)) :: Nil) =>
      Cell.fromString(s)
  },
  {
    case x: Option[_] =>
      if(x.isDefined) {
        val value = x.get.toString
        JObject(JField("cell", JString(value)))
      } else {
        JObject(JField("cell", JString("[-]")))
      }

  }
)) 

//设置package包名称以及导入依赖的类
package searching

import mapdomain.graph.Coordinate
import org.json4s.CustomSerializer
import org.json4s.JsonAST.JString

case class PedestrianIncident(`type`: IncidentType,
  position: Option[Coordinate] = None,
  from: Option[Coordinate] = None,
  to: Option[Coordinate] = None)

sealed trait IncidentType
case object SidewalkIncidentType extends IncidentType
case object RampIncidentType extends IncidentType
case object StopIncidentType extends IncidentType

object IncidentType {
  val keyMap: Map[String, IncidentType] = Map(
    "sidewalk" -> SidewalkIncidentType,
    "ramp" -> RampIncidentType) withDefaultValue SidewalkIncidentType
}

case object IncidentTypeSerializer extends CustomSerializer[IncidentType](format ? ({
  case JString(s) ? IncidentType.keyMap(s)
}, {
  case incidentType: IncidentType ? JString(IncidentType.keyMap.find(i ? incidentType.equals(i._2)).get._1)
})) 

//设置package包名称以及导入依赖的类
package se.joham.funrts.util

import org.json4s.{CustomSerializer, Extraction, ShortTypeHints}
import se.joham.funrts.model._
import Extraction.{decompose, extract}
import org.json4s.JsonAST.JValue
import se.gigurra.scalego.serialization.KnownSubTypes
import se.gigurra.scalego.serialization.json.JsonSerializer
import se.joham.funrts.model.FunRtsECS.{ECS, IdTypes}
import org.json4s.jackson.JsonMethods.{compact, parse}
import org.json4s.jackson.JsonMethods.{pretty => prty}


object JSON {

  def writeAst(ecs: ECS): JValue = ecsSerializer.SerializableOps(ecs).toJsonAst
  def    write(ecs: ECS, pretty: Boolean): String = ecsSerializer.SerializableOps(ecs).toJson(pretty)
  def writeAst(terrain: Terrain): JValue = decompose(terrain)
  def    write(terrain: Terrain, pretty: Boolean): String = if (pretty) prty(writeAst(terrain)) else compact(writeAst(terrain))

  def     readEcsAst(ecs: ECS, json: JValue): Unit = ecsSerializer.SerializableOps(ecs).appendJsonAst(json)
  def        readEcs(ecs: ECS, json: String): Unit = ecsSerializer.SerializableOps(ecs).appendJson(json)
  def readTerrainAst(json: JValue): Terrain = extract[Terrain](json)
  def    readTerrain(json: String): Terrain = readTerrainAst(parse(json))


  //////////////////////////////////////////////////////////////////////////////////////

  object TerrainSerializer extends CustomSerializer[Terrain](_ => ({
    case json => extract[TerrainSerializable](json).toTerrain },{
    case terrain: Terrain => decompose(new TerrainSerializable(terrain))
  }))

  case class TerrainSerializable(nx: Int, ny: Int, base64Tiles: String) {
    def this(terrain: Terrain) = this(terrain.nx, terrain.ny, Base64.encodeString(terrain.tiles))
    def toTerrain: Terrain = Terrain(nx, ny, Base64.decodeBinary(base64Tiles))
  }

  implicit lazy val jsonFormats = org.json4s.DefaultFormats + TerrainSerializer + ShortTypeHints(Action.classes)
  val ecsSerializer = new JsonSerializer[IdTypes](
    knownSubtypes = KnownSubTypes.fromShortClassName(types = Action.classes:_*),
    jsonFormats = jsonFormats
  )

} 

//设置package包名称以及导入依赖的类
package models

import org.json4s.CustomSerializer
import org.json4s.JsonDSL._
import scalikejdbc.TypeBinder

sealed abstract class TrainType(val value: Int, val name: String) {
  def toJson = ("value" -> value) ~ ("name" -> name)
}

object TrainType {
  case object Local extends TrainType(1, "??")
  case object Rapid extends TrainType(2, "??")
  case object Express extends TrainType(3, "??")
  case object Shinkansen extends TrainType(4, "???")

  def values = Seq(Local, Rapid, Express, Shinkansen)
  def find(v: Int): Option[TrainType] = values.find(_.value == v)

  implicit def typeBinder: TypeBinder[Int] = TypeBinder.int
  implicit val impl: TypeBinder[TrainType] = TypeBinder(_ getInt _)(_ getInt _).map(find).map(_.getOrElse(Local))
}

object TrainTypeSerializer extends CustomSerializer[TrainType](format => (
  { PartialFunction.empty },
  {
    case x: TrainType =>
      ("value" -> x.value) ~ ("name" -> x.name)
  }
)) 

//设置package包名称以及导入依赖的类
package models

import org.json4s.CustomSerializer
import org.json4s.JsonDSL._
import scalikejdbc.TypeBinder

sealed abstract class StationRank(val value: Int, val name: String)

object StationRank {
  case object Top extends StationRank(1, "???") // Tokyo, Nagoya, Osaka
  case object Major extends StationRank(2, "???") // Shinjuku, Nagano, Sapporo etc...
  case object Large extends StationRank(3, "???") // Transfer stations
  case object Middle extends StationRank(4, "???") // Rapid stops
  case object Local extends StationRank(5, "???") // others

  val values = Seq(Top, Major, Large, Middle, Local)
  def find(v: Int): Option[StationRank] = values.find(_.value == v)

  implicit def typeBinder: TypeBinder[Int] = TypeBinder.int
  implicit val impl: TypeBinder[StationRank] = TypeBinder(_ getInt _)(_ getInt _).map { i => find(i).getOrElse(Local) }
}

object StationRankSerializer extends CustomSerializer[StationRank](format => (
  { PartialFunction.empty },
  {
    case x: StationRank =>
      ("value" -> x.value) ~ ("name" -> x.name)
  }
)) 

//设置package包名称以及导入依赖的类
package models

import authes.Role
import org.json4s.CustomSerializer
import org.json4s.JsonDSL._
import responses.AccountMinimal
import scalikejdbc._
import skinny.orm.{Alias, SkinnyCRUDMapperWithId}

case class Account(
    id: Long,
    name: String,
    email: String,
    role: Role,
    password: String
) {
  def save()(implicit session: DBSession): Long = Account.save(this)
  def update()(implicit session: DBSession): Long = Account.update(this)
  def minimal = AccountMinimal(id, name)
}

object Account extends SkinnyCRUDMapperWithId[Long, Account] {
  override val defaultAlias: Alias[Account] = createAlias("a")
  override def extract(rs: WrappedResultSet, n: ResultName[Account]): Account = autoConstruct(rs, n)

  override def idToRawValue(id: Long): Any = id
  override def rawValueToId(value: Any): Long = value.toString.toLong

  def save(account: Account)(implicit session: DBSession): Long =
    createWithAttributes(params(account): _*)

  def update(a: Account)(implicit session: DBSession): Int =
    updateById(a.id).withAttributes(params(a): _*)

  def params(a: Account) = Seq(
    'name -> a.name,
    'email -> a.email,
    'role -> a.role.value,
    'password -> a.password
  )
}

object AccountSerializer extends CustomSerializer[Account](format => (
  { PartialFunction.empty },
  {
    case x: Account =>
      ("id" -> x.id) ~ ("name" -> x.name) ~ ("role" -> x.role.value)
  }
)) 

//设置package包名称以及导入依赖的类
package validator

import org.json4s.CustomSerializer
import org.json4s.JsonDSL._

abstract class Error {
  def message: String
  def url: Option[String]
}

object ErrorSerializer extends CustomSerializer[Error](format => (
  { PartialFunction.empty },
  {
    case x: Error =>
      ("message" -> x.message) ~ ("url" -> x.url)
  }
)) 

//设置package包名称以及导入依赖的类
package com.github.mijicd.waes.representations

import com.github.mijicd.waes.domain._
import org.json4s.JsonAST._
import org.json4s.{CustomSerializer, DefaultFormats}
import spray.httpx.Json4sJacksonSupport

object JsonFormats extends Json4sJacksonSupport {
  override implicit def json4sJacksonFormats = DefaultFormats + StatusSerializer

  object StatusSerializer extends CustomSerializer[Status]( format =>
    (
      {
        case JString(status) =>
          status match {
            case "EQUAL" => Equal
            case "DIFFERENT_LENGTHS" => DifferentLength
            case "DIFFERENT_AT" => DifferentAt
          }
      },
      {
        case s: Status => JString(s.status)
      }
    )
  )
} 

//设置package包名称以及导入依赖的类
package smarthouse.restapi.http.ws

import java.net.URI
import java.time.OffsetDateTime

import akka.cluster.MemberStatus
import org.json4s.CustomSerializer
import org.json4s.JsonAST.JString

trait JsonSerializers {
  val memberStatusSerializer = new CustomSerializer[MemberStatus](format => ( {
    case JString("Exiting") => MemberStatus.Exiting
    case JString("Up") => MemberStatus.Up
    case JString("Joining") => MemberStatus.Joining
    case JString("Leaving") => MemberStatus.Leaving
    case JString("Removed") => MemberStatus.Removed
    case JString("Down") => MemberStatus.Down
  }, {
    case x: MemberStatus =>
      JString(x.toString)
  }
    ))

  val uriSerializer = new CustomSerializer[URI](format => ( {
    case JString(string) => new URI(string)
  }, {
    case x: URI =>
      JString(x.toString)
  }
    ))

  val offsetDateTime = new CustomSerializer[OffsetDateTime](format => ( {
    case JString(string) => OffsetDateTime.parse(string)
  }, {
    case x: OffsetDateTime =>
      JString(x.toLocalDateTime.toString)
  }
    ))
} 

//设置package包名称以及导入依赖的类
package model

import org.json4s.CustomSerializer
import org.json4s.JsonAST.{JNull, JString}



trait ResultShooting
case object Hit extends ResultShooting
case object Missed extends ResultShooting
case object AlreadyTaken extends ResultShooting
case object Sunk extends ResultShooting
case object AllSunken extends ResultShooting

object ResultShootingSerializer extends CustomSerializer[ResultShooting](format => (
  {
    case JString(resultShooting) =>  resultShooting match {
      case "Hit" => Hit
      case "Missed" => Missed
      case "AlreadyTaken" => AlreadyTaken
      case "Sunk" => Sunk
      case _ => Missed
    }
    case JNull => null
  },
  {
    case resultShooting:ResultShooting => JString(resultShooting.getClass.getSimpleName.replace("$",""))
  })) 

//设置package包名称以及导入依赖的类
package model

import org.json4s.CustomSerializer
import org.json4s.JsonAST.{JNull, JString}



sealed trait SeaStatus
case object EmptySea extends SeaStatus
case object MissedShot extends SeaStatus
case object BattleShipSafe extends SeaStatus
case object BattleShipHit extends SeaStatus
case object BattleShipSunk extends SeaStatus

case object SeaStatusSerializer extends CustomSerializer[SeaStatus](format => (
  {
    case JString(seastatus) =>  seastatus match {
      case "EmptySea" => EmptySea
      case "MissedShot" => MissedShot
      case "BattleShipSafe" => BattleShipSafe
      case "BattleShipHit" => BattleShipHit
      case "BattleShipSunk" => BattleShipSunk
      case _ => EmptySea
    }
    case JNull => null
  },
  {
    case seaStatus:SeaStatus => JString(seaStatus.getClass.getSimpleName.replace("$",""))
  }))