Swift Json 響應解碼

Question

嘗試解碼來自 https 調用的 json 響應。 進行解碼的代碼：

if let data = responseData, let _ = String(data: data, encoding: .utf8) {
        if let httpResponse = response as? HTTPURLResponse{
            if httpResponse.statusCode == 401 {
                print("Not Authorized")
            } else if httpResponse.statusCode == 200 {
                let decoder = JSONDecoder()
                let model: [ListResponse] = try! decoder.decode([ListResponse].self, from: data)
                print("Model: \(model)")

            }
        }
    }

它只是不斷輸出一個空數組。 我顯然錯過了任何人都可以幫忙的東西嗎？ 我可以使用從 Swift 傳遞的相同信息從 PostMan 調用 api 的方法，並返回我的值。 由於某種原因，返回 json 的解析失敗且沒有錯誤。

編輯：響應數據：

[
    {
        "id": 1,
        "numb": "12345",
        "bName": "Test Tester",
        "clDate": "2018-12-31T00:00:00",
        "currSt": "OK",
        "proPerc": 10,
        "prop": "TBD"
    },
    {
        "id": 2,
        "numb": "123456",
        "bName": "Test Tester2",
        "clDate": "2018-12-31T00:00:00",
        "currSt": "OK",
        "proPerc": 20,
        "prop": "TBD"
    }
]

歸結為從上面解析 clDate 的問題。 只有在我將 json 轉換為字符串並嘗試解析它后才發現該錯誤。 現在試圖弄清楚如何處理日期 json 解析。

Answer 1

把下面的放在操場上。 下次您必須執行此類操作時，請記住 Playgrounds 是您的朋友：

struct ListResponse: Decodable {
    let id: Int
    let numb: String
    let bName: String
    let clDate: Date
    let currSt: String
    let proPerc: Int
    let prop: String
}

let myDateFormatter: DateFormatter = {
    let formatter = DateFormatter()
    formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss"
    formatter.calendar = Calendar(identifier: .iso8601)
    formatter.timeZone = TimeZone(secondsFromGMT: 0)
    return formatter
}()

let text =
"""
[
{
"id": 1,
"numb": "12345",
"bName": "Test Tester",
"clDate": "2018-12-31T00:00:00",
"currSt": "OK",
"proPerc": 10,
"prop": "TBD"
},
{
"id": 2,
"numb": "123456",
"bName": "Test Tester2",
"clDate": "2018-12-31T00:00:00",
"currSt": "OK",
"proPerc": 20,
"prop": "TBD"
}
]
"""
let data = text.data(using: .utf8)!
let decoder = JSONDecoder()
decoder.dateDecodingStrategy = .formatted(myDateFormatter)
let model: [ListResponse] = try! decoder.decode([ListResponse].self, from: data)
print("Model: \(model)")