Scala JSON 差异

Question

我有两个具有完全相同键的 JSON。

val json1 = 
"""{
  'name': 'Henry',
  'age' : 26,
  'activities' : {
                 'school': 'basketball club', 
                 'after-school': 'chess'
                 }
}"""

val json2 = 
"""{
  'name': 'David',
  'age' : 23,
  'activities' : {
                 'school': 'baseball club', 
                 'after-school': 'programming'
                 }
}"""

我想知道这两个json的区别，比如:

name = Henry, David
age = 23, 26
activities.school= basketball club, baseball club
activities.after-school=chess, programming

它不必遵循上述格式，但我想获取不同的键和值。

Answer 1

您可以尝试 diffson，一个基于 circe 的库:https://github.com/gnieh/diffson

例子:

import diffson._
import diffson.lcs._
import diffson.circe._
import diffson.jsonpatch._
import diffson.jsonpatch.lcsdiff._

import io.circe._
import io.circe.parser._

import cats._
import cats.implicits._

implicit val lcs = new Patience[Json]

val json1 = parse("""{
                    |  "a": 1,
                    |  "b": true,
                    |  "c": ["test", "plop"]
                    |}""".stripMargin)

val json2 = parse("""{
                    |  "a": 6,
                    |  "c": ["test2", "plop"],
                    |  "d": false
                    |}""".stripMargin)

val patch =
  for {
    json1 <- json1
    json2 <- json2
  } yield diff(json1, json2)

会返回:

[{
  "op":"replace",
  "path":"/a",
  "value":6
},{
  "op":"remove",
  "path":"/b"
},{
  "op":"replace",
  "path":"/c/0",
  "value":"test2"
},{
  "op":"add",
  "path":"/d",
  "value":false
}]

基本上，您可以根据您的确切目的连接“添加”部分值。