ios - Swift Json 响应解码

Question

尝试解码来自 https 调用的 json 响应。进行解码的代码:

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)")

            }
        }
    }

它只是一直输出一个空数组。我显然错过了任何人都可以帮忙的东西吗？我可以使用我从 Swift 传递的相同信息从 PostMan 调用 api 的方法，它返回我的值。出于某种原因，返回 json 的解析失败且没有错误。

编辑:响应数据:

[
    {
        "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"
    }
]

归结为从上面解析 clDate 的问题。只有在我将 json 转换为字符串并尝试解析它后才发现该错误。现在想弄清楚如何处理日期 json 解析。

Answer 1

将下面的内容放在 Playground 上。下次你不得不做这种事情时，请记住 Playgrounds 是你的 friend :

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)")