How to process JSON in Swift 3?

Question

JSON

Hello. For a very long time I figured out how to process the JSON result of a request to the server using Alamofire.
I return Json in which there are internal json lines.
In array view, my JSON is:
var myArray = ["People0" : ["id": "1", "Name": "Alex"], "People1" : ["id": "2", "Name" : "Serg"]] etc.
I'm just learning Swift and working with JSON seemed incredibly difficult to me in it. The only working way for me looks like this:

let parameters: Parameters = ["parametr1": "1", "parametr2": "2", "parametr3": "3"]
        
        Alamofire.request("http://link.php", method: .post, parameters: parameters).responseJSON { response in
            
            switch response.result {
            case .success:
                
                if let objJson = response.result.value as! NSDictionary? {
                    
                    //for element in objJson {
                    
                    for index in 0...(objJson.count)-1 {
                        let data = objJson["People" + String(index)] as! String
                        let dataNS = data.data(using: .utf8)
                        
                        
                        do {
                            let cont = try JSONSerialization.jsonObject(with: dataNS!, options: []) as? [String: Any]
                            
                            let contData = cont as! [String:String]
                            
                            self.names.append(String((index + 1)) + ". " + contData["Name"]!)
                            self.ids.append(Int(contData["id"]!)!)
                            
                        } catch {
                        }
                        
                    }
                    
                    self.tableView.reloadData()
                }
                

                
            case .failure( _):
                
                var errorString = "NULL"
                
                if let data = response.data {
                    if let json = try? JSONSerialization.jsonObject(with: data, options: []) as! [String: String] {
                        errorString = json["error"]!
                    }
                }
                
            }
            
        }

It seems to me that my code could be implemented much easier, but I don't know how. I hope for your help. Thank you.

Answer 1

Include a lib for parsing JSON, for example, one , two , three .

case .success:
    let json = JSON(response.result.value)
    let username: String? = json["People0"]["Name"].string
    // ...

It turned out that the transmitted JSON was in a not entirely correct format, because of this, you have to do this:

case .success:
    let json = JSON(response.result.value)
    let nestedJson = JSON(parseJSON: json["People0"].string ?? "{}")
    let username: String? = nestedJson["Name"].string
    // ...