C＃Json將任何動態對象轉換為鍵值對

Question

我正在編寫一個工具，該工具將使用入站Json對象，並將其轉換為鍵值記錄（有時稱為“展平”）。 目的是避免在工具變得很大或嵌套的Json對象時導致工具損壞，因此我想避免遞歸。

一個示例對象可能像這樣（下），包含嵌套數組，空值，您可以為其命名，實際上是任何合法的json ...

{
  "firstName": "John",
  "lastName": "Smith",
  "isAlive": true,
  "age": 25,
  "address": {
    "streetAddress": "21 2nd Street",
    "city": "New York",
    "state": "NY",
    "postalCode": "10021-3100"
  },
  "phoneNumbers": [
    {
      "type": "home",
      "number": "212 555-1234"
    },
    {
      "type": "office",
      "number": "646 555-4567"
    },
    {
      "type": "mobile",
      "number": "123 456-7890"
    }
  ],
  "children": [],
  "spouse": null
}

上面對象的期望輸出將是該對象每個元素的鍵值對...

Key                     Value
/firstName              "John"
/lastName               "Smith"
/isAlive                "true"
/age                    "25"
/address
/address/streetAddress  "21 2nd Street"
/address/city           "New York"
/address/state          "NY"
/address/postalCode     "10021-3100"
/phoneNumbers
/phoneNumbers/1/
/phoneNumbers/1/type    "home"
/phoneNumbers/1/number  "212 555-1234"
/phoneNumbers/2/
/phoneNumbers/2/type    "office"
/phoneNumbers/2/number  "646 555-4567"
/phoneNumbers/3/
/phoneNumbers/3/type    "mobile"
/phoneNumbers/3/number  "123 456-7890"
/children
/spouse

我上面的示例對象在內存中是一個動態對象，使用Newtonsoft的JSON類導入。 僅重申一下，理想的解決方案將不涉及遞歸，因為吹散的堆棧會很不好。 感謝您的幫助。

Answer 1

嘗試這個：

var json = File.ReadAllText("test.txt");
var obj = JObject.Parse(json);

var result = obj.Descendants()
    .OfType<JProperty>()
    .Select(p => new KeyValuePair<string, object>(p.Path,
        p.Value.Type == JTokenType.Array || p.Value.Type == JTokenType.Object
            ? null : p.Value));

foreach (var kvp in result)
    Console.WriteLine(kvp);

它為您提供：

[firstName, John]
[lastName, Smith]
[isAlive, True]
[age, 25]
[address, ]
[address.streetAddress, 21 2nd Street]
[address.city, New York]
[address.state, NY]
[address.postalCode, 10021-3100]
[phoneNumbers, ]
[phoneNumbers[0].type, home]
[phoneNumbers[0].number, 212 555-1234]
[phoneNumbers[1].type, office]
[phoneNumbers[1].number, 646 555-4567]
[phoneNumbers[2].type, mobile]
[phoneNumbers[2].number, 123 456-7890]
[children, ]
[spouse, ]

我相信您將能夠在路徑中進行Replace 。