将带有虚线键的平面图转换为分层json [英] Convert flat map with dotted keys into hierarchical json

问题描述

我有一个散列图(未排序)，带有像这样的虚线键值对

I have a hashmap (unsorted) with dotted key value pairs like

person.adress.street=Fakestreet
person.adress.nr=123
person.name=Mike
person.adress.city=Springfield

我想将其转换为有效的json结构，例如:

And I would like to convert it into a valid json structure like:

{
   "person" : {
     "name" : "Mike",
     "adress" : {
       "street" : "Fakestreet",
       "nr" : 123,
       "city" : "Springfield"
      }
   }
}

我那里有一个库或一些标准的常规功能，还是需要手工制作这样的东西?

I there a library or some standard groovy functionallity out there or do I need to handcraft such a thing?

推荐答案

您可以使用groovy.util.ConfigSlurper 或像这样缩短您的手工解决方案:

or shorten your hand-made solution like that:

Closure nester

nester = { Map rslt, String key, val ->
  String[] keys = key.split( /\./, 2 )
  if( !rslt.containsKey( keys[ 0 ] ) ) rslt[ keys[ 0 ] ] = [:]
  if( 2 == keys.length ) nester rslt[ keys[ 0 ] ], keys[ 1 ], val
  else rslt[ key ] = val
  rslt
}

def d = [ 'person.name':'Mike', 'person.adress.street':'Fakestreet', 'person.adress.nr':123, 'person.adress.city':'Springfield', 'aaa':'bbb' ]

def tree = d.inject [:], nester.trampoline()

assert '{"person":{"name":"Mike","adress":{"street":"Fakestreet","nr":123,"city":"Springfield"}},"aaa":"bbb"}' == JsonOutput.toJson( tree )

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