Separating a JSON string that contains object

问题

I have a JSON string that contains an array and it is unable to be deserialized. I would like to split so that I can access a list of products and their codes and quantities, each time I try it crashes. The Json string is returned like so:

{
  "transaction_id": "88",
  "store_id": "3",
  "cashier_id": null,
  "loyalty_account": null,
  "transaction_time": "1382027452",
  "total_amount": "99.45",
  "items": {
    "1239219274": "1",
    "3929384913": "1"
  },
  "payments": {
    "cc": "99.45"
  }
}

I would like it to be separate it into:

{
  "transaction_id": "88",
  "store_id": "3",
  "cashier_id": null,
  "loyalty_account": null,
  "transaction_time": "1382027452",
  "total_amount": "99.45"
}

and

{
  "1239219274":"1",
  "3929384913":"1"
}

and

{
  "cc": "99.45"
}

回答1:

EDIT: Updated to reflect your edit.

That is not a JSON array, that is a JSON object which is basically a dictionary of values.

A JSON array is serialized like the following with square brackets [ ]:

{
    "name":"Outer Object",
    "items": [
        {
            "name":"Item #1"
        },
        {
            "name":"Item #2"
        },
        {
            "name":"Item #3"
        }
    ]
}

You should probably just spend a few minutes learning Json.NET which will take care of the details for you.

Here's how I can deserialize that string to an object:

public class Transaction
{
    [JsonProperty("transaction_id")]
    public int Id { get; set; }

    [JsonProperty("store_id")]
    public int StoreId { get; set; }

    [JsonProperty("cashier_id")]
    public int? CashierId { get; set; }

    [JsonProperty("loyalty_account")]
    public string LoyaltyAccount { get; set; }

    [JsonProperty("transaction_time")]
    public int TransactionTime { get; set; }

    [JsonProperty("total_amount")]
    public decimal TotalAmount { get; set; }

    [JsonProperty("items")]
    public Dictionary<string, string> Items { get; set; }

    [JsonProperty("payments")]
    public Dictionary<string, string> Payments { get; set; }
}

Then I can simply write:

Transaction transaction = JsonConvert.DeserializeObject<Transaction>(json);

回答2:

First of all you json string has an error you can validate it using an online validator like : http://jsonlint.com/

Parse error on line 9:
...   "1239219274": "1""3929384913": "1"  
-----------------------^
Expecting '}', ':', ',', ']'

And then for arrays they have this layout :

a : [1,2,3,4,5]

And using C# you can use JSON.Net if using javascript you can use jQuery or YUI

来源：https://stackoverflow.com/questions/19434500/separating-a-json-string-that-contains-object

标签

json

deserialization