json - 在 Swift 3 中解析 Json 文件

Question

我想解析一个本地 JSON 文件，但我不知道如何在 Swift 3 中这样做

我当前的代码似乎不起作用

我一直收到这个错误:

'jsonObject' produces 'Any', not the expected contextual result type 'NSArray'

import UIKit
import Alamofire
import SwiftyJSON

class ViewController: UIViewController
{

    var allEntries: String!


    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    func LoadAllQuestionsAndAnswers
    {
            let path = Bundle.main.path(forResource: "content", ofType: "json")
            let jsonData : NSData = NSData(contentsOfFile: path!)!
            allEntries = JSONSerialization.jsonObject(with: jsonData, options: JSONSerialization.ReadingOptions.mutableContainers, error: nil) as String
            NSLog(allEntries)
    }

}

我正在从这个 json 文件“content.json”加载数据

[
    {
        "id" : "1",
        "question": "What is the fastest fish in the ocean?",
             "answers": [
             "Sailfish",
             "Lion Fish",
             "Flounder",
             "Tiger Shark",
             "Swordfish"
            ],
         "difficulty": "1"
     },
     {
         "id" : "2",
         "question": "Which animal has the most legs?",
              "answers": [
              "Millipede",
              "Shrimp",
              "Octopus",
              "Dog",
              "Lion"
            ],
          "difficulty": "1"
     }
]

Answer 1

let path =  Bundle.main.path(forResource: "sample", ofType: "son")
 let jsonData = try? NSData(contentsOfFile: path!, options: NSData.ReadingOptions.mappedIfSafe) 
print(jsonData!) 
let jsonResult: NSDictionary = try! JSONSerialization.jsonObject(with: jsonData as! Data, options: JSONSerialization.ReadingOptions.mutableContainers) as! NSDictionary

//将下面的示例 json 保存在一个文件中，并命名为 sample.json

{ "blogs": [ { "id": 111, "url": "http://roadfiresoftware.com/blog/", "name": "Roadfire Software Blog" }, { "id": 345, "url": "https://developer.apple.com/swift/blog/", "name": "Swift Developer Blog" } ] }