Question

我正在尝试读取带有以下财务信息的json：

{"cost": 0.0, "price": 417.0, "total": 834.0, "doc_id": 2, "status": "Sync", "doc_code": "ORD-5-1", "doc_kind": "O", "username": "02", "createdat": "2019-01-02T17:09:48.478918", "sub_total": 834.0, "tax_value": 0.0, "updatedat": "2019-01-02T17:10:08.00777-05:00", "customer_code": "43915888_37", "delivery_order": 0, "discount_value": 0.0}

但是它返回，例如：

"cost": 0.0 //json
cost: 281474976710656 //.NET

如果将iOS设备的区域设置设置为西班牙语/哥伦比亚，则会发生这种情况。在美国区域设置中可以正常工作。奇怪的是应该与不变文化一起工作：

https://www.newtonsoft.com/json/help/html/P_Newtonsoft_Json_JsonSerializerSettings_Culture.htm

这仅在设备上发生。 使用模拟器很好。

这就是我尝试的方式：

module test.main

open System

open UIKit
open Foundation

let fromJson2T<'T> x = 
    Newtonsoft.Json.JsonConvert.DeserializeObject<'T>(x)

type DocumentRow = {
    doc_id:int32
    doc_kind:string
    doc_code:string
    customer_code:string
    from_code:string option
    username:string
    createdat:DateTime
    updatedat:DateTime
    dueat:DateTime option
    signature:string option
    authorized:string option
    delivery_order:int32
    price:decimal
    cost:decimal
    tax_value:decimal
    discount_value:decimal
    sub_total:decimal
    total:decimal
    status:string
    notes:string option
    syncdata:string option
    version:int32
}

let DOC = """
{"cost": 0.0, "price": 417.0, "total": 834.0, "doc_id": 2, "status": "Sync", "doc_code": "ORD-5-1", "doc_kind": "O", "username": "02", "createdat": "2019-01-02T17:09:48.478918", "sub_total": 834.0, "tax_value": 0.0, "updatedat": "2019-01-02T17:10:08.00777-05:00", "customer_code": "43915888_37", "delivery_order": 0, "discount_value": 0.0}
"""

[<Register ("AppDelegate")>]
type AppDelegate () =
    inherit UIApplicationDelegate ()

    override val Window = null with get, set

    // This method is invoked when the application is ready to run.
    override this.FinishedLaunching (app, options) =
        let row:DocumentRow = fromJson2T(DOC)
        printfn "%A" row
        true

我也尝试

let jsonSettings = JsonSerializerSettings(NullValueHandling = NullValueHandling.Ignore, Culture= System.Globalization.CultureInfo.InvariantCulture)

let fromJson2T<'T> x = 
    Newtonsoft.Json.JsonConvert.DeserializeObject<'T>(x, jsonSettings)

在OSX上使用FSHarp.Core 4.5.4，Xamarin.IOS 12.2.1.13，Newtonsoft.Json 12.0.1。

P.D：我更新了代码示例，并且经过验证很容易复制。我创建一个空白的iOS项目，将代码放入示例中。在模拟器上运行，可以在设备上运行，不能运行。两者都设置为“（（西班牙/美国）”）

P.D 2：https://github.com/vsapronov/FSharp.Json也发生了。但是像http://www.fssnip.net/8y/title/JSON-Parser这样手动解析（从浮点数更改为小数）可以正常工作。

使用Newtonsoft.Json，在iOS上不因文化不变而反序列化吗？

0 个答案: