合并所有嵌套的Json对象

Question

I have got a following json. I want to merge all nested json objects into one.

    [
      {
        "2": "a",
        "3": "a"
      },
      {
        "2": "f",
        "3": "a",
        "4": "p"
      },
      {
        "2": "n",
        "3": "o",
        "4": "t"
      }
    ]

so, the output of the above json would be

[  
   {  
      "0":"a",
      "1":"a",
      "2":"f",
      "3":"a",
      "4":"p",
      "5":"n",
      "6":"o",
      "7":"t"
   }
]

I tried to parse the json array and then add all values and append it to another array. However, is there any other elegant solution to merge all nested json objects to one?

Answer 1

Given that you need to change indices, manual merging is unavoidable.

Eg SelectMany from Linq could be used for merging as:

var input = JsonConvert.DeserializeObject<Dictionary<string, string>[]>(@"
[
  {
    ""2"": ""a"",
    ""3"": ""a""
  },
  {
    ""2"": ""f"",
    ""3"": ""a"",
    ""4"": ""p""
  },
  {
    ""2"": ""n"",
    ""3"": ""o"",
    ""4"": ""t""
  }
]");

var result = input
    .SelectMany(d => d.OrderBy(kvp => kvp.Key).Select(kvp => kvp.Value))
    .Select((value, index) => new {index, value})
    .ToDictionary(iv => iv.index, iv => iv.value);

 var jsonResult = JsonConvert.SerializeObject(result);

Answer 2

You can use the tool called json .net Check the following code :

var serializer = new XmlSerializer(model.GetType());
        serializer.Serialize(sw, model);
        JObject o1 = JObject.Parse(@"{
         'FirstName': 'John',
         'LastName': 'Smith',
         'Enabled': false,
         'Roles': [ 'User' ]
          }");
        JObject o2 = JObject.Parse(@"{
         'Enabled': true,
         'Roles': [ 'User', 'Admin' ]
          }");

        o1.Merge(o2, new JsonMergeSettings
        {
            // union array values together to avoid duplicates
            MergeArrayHandling = MergeArrayHandling.Union
        });

        string json = o1.ToString();
        // {
        //   "FirstName": "John",
        //   "LastName": "Smith",
        //   "Enabled": true,
        //   "Roles": [
        //     "User",
        //     "Admin"
        //   ]
        // }

Please Check Link : https://www.newtonsoft.com/json/help/html/MergeJson.htm