JSONDecoder

decode.swift

import Foundation

struct Response: Decodable {
	var time: Date
}

let formatter = DateFormatter()
formatter.locale = Locale(identifier: "en_US_POSIX")
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss'Z'"

let json = """
{"time":"2021-03-14T02:28:53Z"}
""".data(using: .utf8)!

let decoder = JSONDecoder()
decoder.dateDecodingStrategy = .formatted(formatter)

// Fatal error: 'try!' expression unexpectedly raised an error: 
// Swift.DecodingError.dataCorrupted(Swift.DecodingError.Context(codingPath: [CodingKeys(stringValue: "time", intValue: nil)]
// , debugDescription: "Date string does not match format expected by formatter.", underlyingError: nil)): 
// file __lldb_expr_1/Test.playground, line 17
let response = try! decoder.decode(Response.self, from: json)