我在项目上工作,我必须从PHP服务器接收数据 . 一切都很好,只有两件事:1 . )无法解析Date . 我知道这个问题已在这里得到解答,但在我的案例中并没有其中一个变体 . 这是我的代码
import Foundation
import SwiftyJSON
func getClientDataFromServer(id: String?) {
guard let id = id else {return}
let jsonUrlString = "https://sverlim.software/cms/clientReadOneClient.php?client_id=10"
let url = URL(string: jsonUrlString)!
URLSession.shared.dataTask(with: url) { (data, response, err) in
guard err == nil else {
print(err!.localizedDescription)
return
}
print(response as Any)
guard let data = data else {return}
let dateFormatterWithTime: DateFormatter = {
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
formatter.timeZone = TimeZone(abbreviation: "UTC")
formatter.locale = Locale(identifier: "en_US_POSIX")
return formatter
}()
let datastring = String(data: data, encoding: .utf8)
print("data====\(datastring!)")
let json = try! JSONSerialization.jsonObject(with: data, options: []) as! [[String:Any]]
print(json[0]["datarteg"] as Any)
do {
let decoder = JSONDecoder()
let object = try! JSON(data: data)
print(object[0]["datareg"].dateTime)
print(object[0]["company"].stringValue)
decoder.dateDecodingStrategy = .formatted(dateFormatterWithTime)
let clients = try decoder.decode([Client].self, from: data)
print(clients)
let client = clients.first
print(client!)
} catch let jsonErr {
print(jsonErr)
}
}.resume()
}
struct Client: Codable {
let id: String?
let name: String?
let phone: String?
let company: String?
let discount: String?
var datareg: Date?
}
class Formatter {
static let jsonDateFormatter: DateFormatter = {
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd"
return formatter
}()
static let jsonDateTimeFormatter: DateFormatter = {
let formatter = DateFormatter()
formatter.dateFormat = "yyyy'-'MM'-'dd' 'HH':'mm':'ss"
return formatter
}()
}
extension JSON {
public var date: Date? {
get {
switch self.type {
case .string:
return Formatter.jsonDateFormatter.date(from: self.object as! String)
default:
return nil
}
}
}
public var dateTime: Date? {
get {
switch self.type {
case .string:
return Formatter.jsonDateTimeFormatter.date(from: self.object as! String)
default:
return nil
}
}
}
我按照这个答案
Swift's JSONDecoder with multiple date formats in a JSON string?
How do I format JSON Date String with Swift?
https://useyourloaf.com/blog/swift-codable-with-custom-dates/
这是我从日志打印的内容
data====
[{"id":"10","name":"\u0423\u043a\u0440\u0430\u0438\u043d\u0435\u0446
\u0410\u043b\u0435\u043a\u0441\u0430\u043d\u0434\u0440","phone":"+38098497
4673","company":"2","discount":"0","datereg":"2017-11-28 14:16:16"}]
nil
nil
2
[SashaApp.Client(id: Optional("10"), name: Optional("Украинец Александр"),
phone: Optional("+380984974673"), company: Optional("2"), discount:
Optional("0"), datareg: nil)]
Client(id: Optional("10"), name: Optional("Украинец Александр"), phone:
Optional("+380984974673"), company: Optional("2"), discount:
Optional("0"), datareg: nil)
正如我们所看到的,数据包含“datareg”字段,但无论如何解析(JSONDecoder,JSONSerialization,SwiftyJSON),我都收到nil 2)SSL_ERROR_ZERO_RETURN(6)
任何帮助,伙计们都将不胜感激 . 谢谢))
2 回答
您的文字中有拼写错误:
应该
解析JSON有两种方法 .
Before Swift 4
在Swift 4之前,你只能使用JSONSerialization Class(就像在你的例子中一样) . 此方法返回可以在Dictionary中强制转换的Any对象(类型取决于您接收的数据) .
例如:
如果您有多种数据,则应使用此转换:
然后,您可以通过密钥访问字典中的所有数据并管理数据(如果使用Any,请记住在使用之前输入正确的数据) .
这里有一些文档:https://developer.apple.com/documentation/foundation/jsonserialization
After Swift 4
使用Swift 4,引入了一个新类:JSONEncoder和JSONDecoder . 这太棒了,因为你可以创建你的模型,解析json,你会得到一个已填充所有字段的对象 . 注意你的模型必须实现协议Codable(或Encodable和Decodable) . 如果您的模型没有实现协议,您将收到错误 .
这是一个例子:
这是我的模特:
这是解析的代码:
现在我的变量“myClass”已经包含了json中填充数据的所有字段 .
这里有一些文档:
https://developer.apple.com/documentation/swift/codable
https://developer.apple.com/documentation/foundation/archives_and_serialization/encoding_and_decoding_custom_types