Question

我有一个Elasticsearch Search响应是一个深度嵌套的Json文件，我对如何从中获取特定值感到困惑。请新手Scala和编程一般，我在网上搜索过，看不到任何解释得很好的答案。这是Json文件，我想要获得的值是＆＃34; getSum＆＃34;：＆＃34;值＆＃34;

Search_response: org.elasticsearch.action.search.SearchResponse = {
  "took" : 32,
  "timed_out" : false,
  "_shards" : {
    "total" : 3,
    "successful" : 3,
    "failed" : 0
  },
  "hits" : {
    "total" : 12,
    "max_score" : 1.0,
    "hits" : [ {
      "_index" : "myIndex",
      "_type" : "myType",
      "_id" : "4151202002020",
      "_score" : 1.0,
      "_source":{"pint":[{"printer":[{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"},{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"}],"Lam":[{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"},{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"},{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"}],"Kam":[{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"},{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"},{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"}],"Jas":[{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"}],"tiv":[{ourc""s:"wrer","sourceType":"rsd","Vag":"agaatttt363336"}],"timeLineSource:[{"LA":"DGAT","GATA":"JAS","timeline":9.111694,"GA":"SFWF2525252552552525"}
    }, {
       "_index" : "myIndex",
      "_type" : "myType",
      "_id" : "4151202002020",
      "_score" : 1.0,
       "_source":{"pint":[{"printer":[{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"},{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"}],"Lam":[{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"},{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"},{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"}],"Kam":[{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"},{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"},{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"}],"Jas":[{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"}],"tiv":[{ourc""s:"wrer","sourceType":"rsd","Vag":"agaatttt363336"}],"timeLineSource:[{"LA":"DGAT","GATA":"JAS","timeline":9.111694,"GA":"SFWF2525252552552525"}
    }, {
        "_index" : "myIndex",
      "_type" : "myType",
      "_id" : "4151202002020",
      "_score" : 1.0,
       "_source":{"pint":[{"printer":[{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"},{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"}],"Lam":[{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"},{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"},{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"}],"Kam":[{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"},{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"},{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"}],"Jas":[{"sourceName":"3636636","sourceType":"Bin","Star":0.0,"Fun":"gatayay"}],"tiv":[{ourc""s:"wrer","sourceType":"rsd","Vag":"agaatttt363336"}],"timeLineSource:[{"LA":"DGAT","GATA":"JAS","timeline":9.111694,"GA":"SFWF2525252552552525"}
    }, {
  },
  "aggregations" : {
    "DAEY" : {
      "doc_count" : 59,
      "histogram" : {
        "buckets" : [ {
          "key_as_string" : "1978-02-22T00:00:00.000Z",
          "key" : 1503360000000,
          "doc_count" : 59,
          "nestedValue" : {
            "doc_count" : 177,
            "getSum" : {
              "value" : 768.0690221786499
            }
          },
        }
    }
  }
}

这是我试过的 val getResult：String = searchResult.toString.stripMargin val getValue = JsonParser.parse（getResult）.asInstanceOf [JObject] .values（＆＃34; aggregations＆＃34;）。toString

Answer 1

您可以使用类型安全配置来解决此问题。请在下面找到所需的maven和sbt依赖关系 -

Maven Dependecy -

<dependency>
    <groupId>com.typesafe</groupId>
    <artifactId>config</artifactId>
    <version>1.3.1</version>
</dependency>

Sbt Dependency -

libraryDependencies += "com.typesafe" % "config" % "1.3.1"

之后，您可以使用以下代码获得sum的值 -

import com.typesafe.config.ConfigFactory
val config = ConfigFactory.parseString(getResult)
config.getConfigList("aggregations.DAEY.buckets").get(0).getString("nestedValue .getSum.value")

从此link

查看库的API文档

Answer 2

我终于使用了

val getResult: String = searchResult.toString.stripMargin   
val getValue = JsonParser.parse(getResult).asInstanceOf[JObject].values("aggregations").toString
val valueToDouble = getValue.split(" ").last.dropRight(13).toDouble

如何在scala中获取嵌套的json对象/值

2 个答案: