什么是从BSONArray返回JSON文本的最快方法?在Play框架中返回ReactiveMongo JSON
我返回非常大的JSON文档。是否可以省略处理Play
JsValue
现在,我回来是这样的:
val result:BSONArray = ....
Ok(Json.toJson(result))
我想更快的将是这样的:
Ok(result.toTextJSON).as(MimeTypes.JSON)
更新我在这里的全码:
val command = Json.parse(s""" {
"aggregate": "$collection",
"pipeline": [
{ "$$match": { "$$and" : [
{ "${RootAttrs.TIME}" : { "$$gt": $startSecTime }},
{ "${RootAttrs.TIME}" : { "$$lt": $endSecTime }},
{ "${RootAttrs.COMMAND}" : { "$$eq": ${toCmd(Command.GPS_COORDINATES)} }}
]
}},
{ "$$sort": { "${RootAttrs.TIME}" : 1 }},
{ "$$limit": $MAX_GPS_ALL_DATA },
{ "$$project" : { "_id":0, "${RootAttrs.TIME}":1, "${RootAttrs.COMMAND}":1, "${RootAttrs.VALUE}":1, "${RootAttrs.IGNITION}":1, "${RootAttrs.SIM_NUMBER}":1 } }
]}""")
db.command(RawCommand(BSONDocumentFormat.reads(command).get)).map { out =>
out.get("result").map {
case result: BSONArray =>
Logger.debug("Loaded all GPS history data size: " + result.length)
Ok(Json.toJson(result)) // <- I need just return JSON, parsing to JsValue can take some time
case _ =>
Logger.error("Result GPS history data not array")
BadRequest
}.getOrElse(BadRequest)
}
您能否在此处添加更全面的代码示例? – marcospereira