您好我是swift ios的初学者，我的要求是必须显示Json对表列表的响应我得到了来自Web服务的响应，响应如下所示
我的要求是如何将模型类映射到Array以及如何在tableList中显示它们可以帮助我一些
[{
"_id" : "5470def9e0c0be27780121d7",
"imageUrl" : "https:\/\/s3-eu-west-1.amazonaws.com\/api-static\/clubs\/5470def9e0c0be27780121d7_180.png",
"name" : "Mondo",
"hasVip" : false,
"location" : {
"city" : "Madrid"
}
}, {
"_id" : "540b2ff281b30f3504a1c72f",
"imageUrl" : "https:\/\/s3-eu-west-1.amazonaws.com\/api-static\/clubs\/540b2ff281b30f3504a1c72f_180.png",
"name" : "Teatro Kapital",
"hasVippler" : false,
"location" : {
"address" : "Atocha, 125",
"city" : "Madrid"
}
}, {
"_id" : "540cd44581b30f3504a1c73b",
"imageUrl" : "https:\/\/s3-eu-west-1.amazonaws.com\/api-static\/clubs\/540cd44581b30f3504a1c73b_180.png",
"name" : "Charada",
"hasVippler" : false,
"location" : {
"address" : "La Bola, 13",
"city" : "Madrid"
}
}]
class Club {
var id: String = ""
var name: String = ""
var imageUrl: String = ""
var hasVip: Bool = false
var desc: String = ""
var location: [Location] = []
}
class Location {
var country: String = ""
var city: String = ""
var address: String = ""
var zip: String = ""
var underground: [String] = []
}
class BackGroundPostCall: NSObject {
var delegate:PostProtocol?
func callPostService(url:String,params:NSDictionary){
print("url is===>\(url)")
let request = NSMutableURLRequest(URL: NSURL(string:url)!)
let session = NSURLSession.sharedSession()
request.HTTPMethod = "POST"
//Note : Add the corresponding "Content-Type" and "Accept" header. In this example I had used the application/json.
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
request.HTTPBody = try! NSJSONSerialization.dataWithJSONObject(params, options: [])
let task = session.dataTaskWithRequest(request) { data, response, error in
guard data != nil else {
print("no data found: \(error)")
return
}
do {
if let json = try NSJSONSerialization.JSONObjectWithData(data!, options: []) as? NSArray {
print("Response: \(json)")
} else {
let jsonStr = NSString(data: data!, encoding: NSUTF8StringEncoding)// No error thrown, but not NSDictionary
print("Error could not parse JSON: \(jsonStr)")
}
} catch let parseError {
print(parseError)// Log the error thrown by `JSONObjectWithData`
let jsonStr = NSString(data: data!, encoding: NSUTF8StringEncoding)
print("Error could not parse JSON: '\(jsonStr)'")
}
}
task.resume()
}
}
答案 0 :(得分：5)
对于映射，您可以使用Alamofire的扩展ObjectMapper。
例如：
[{
"_id" : "5470def9e0c0be27780121d7",
"imageUrl" : "https:\/\/s3-eu-west-1.amazonaws.com\/api-static\/clubs\/5470def9e0c0be27780121d7_180.png",
"name" : "Mondo",
"hasVip" : false,
"location" : {
"city" : "Madrid"
}
}, {
"_id" : "540b2ff281b30f3504a1c72f",
"imageUrl" : "https:\/\/s3-eu-west-1.amazonaws.com\/api-static\/clubs\/540b2ff281b30f3504a1c72f_180.png",
"name" : "Teatro Kapital",
"hasVippler" : false,
"location" : {
"address" : "Atocha, 125",
"city" : "Madrid"
}
}, {
"_id" : "540cd44581b30f3504a1c73b",
"imageUrl" : "https:\/\/s3-eu-west-1.amazonaws.com\/api-static\/clubs\/540cd44581b30f3504a1c73b_180.png",
"name" : "Charada",
"hasVippler" : false,
"location" : {
"address" : "La Bola, 13",
"city" : "Madrid"
}
}]
和mapper类：
import ObjectMapper
class Location: Mappable {
var address: String?
var city: String?
required init?(map: Map){
}
func mapping(map: Map) {
address <- map["address"]
city <- map["city"]
}
}
class Club: Mappable {
var id: String?
var imageUrl: Int?
var name: String?
var hasVip: Bool = false
var location: Location?
required init?(map: Map){
}
func mapping(map: Map) {
id <- map["_id"]
imageUrl <- map["imageUrl"]
name <- map["name"]
hasVip <- map["hasVippler"]
location <- map["location"]
}
}
这种使用方式非常灵活和透明。
https://github.com/Alamofire/Alamofire https://github.com/tristanhimmelman/AlamofireObjectMapper
使用示例：
Alamofire.request(URL).responseArray { (response: DataResponse<[Club]>) in
let clubs = response.result.value
if let clubs = clubs {
for club in clubs {
print(club.name)
print(club.location.city)
}
}
}
答案 1 :(得分：2)
第1步：创建如下所示的模型。
class Club {
var id: String = ""
var name: String = ""
var imageUrl: String = ""
var hasVip: Bool = false
var desc: String = ""
var location = Location()
init?(dictionary:[String:Any],location: Location) {
guard let id = dictionary["_id"],
let name = dictionary["name"],
let imageUrl = dictionary["imageUrl"],
let hasVip = dictionary["hasVippler"]
else {
return nil
}
self.id = id
self.name = name
self.imageUrl = imageUrl
self.hasVip = hasVip
self.location = location
}
}
}
class Location {
var country: String = ""
var city: String = ""
var address: String = ""
var zip: String = ""
init?(dictionary:[String:Any]) {
guard let country = dictionary["country"],
let city = dictionary["city"],
let address = dictionary["address"],
let zip = dictionary["zip"]
else {
return nil
}
self.country = country
self.city = city
self.address = address
self.zip = zip
}
}
}
步骤2：按以下方式声明您的数组。
var myTargetArray = [Club]()
Step3：Json Parsing。
do {
if let json = try NSJSONSerialization.JSONObjectWithData(data!, options: []) as? NSArray {
print("Response: \(json)")
for club in json {
if let clubDictionary = club as? NSDictionary {
if let locationDict = clubDictionary["location"] as? NSDictionary{
if let location = Location(dictionary: locationDict) {
if let clubObj = Club(dictionary: clubDictionary, location:location) {
myTargetArray.append(clubObj)
}
}
}
}
}
} else {
let jsonStr = NSString(data: data!, encoding: NSUTF8StringEncoding)// No error thrown, but not NSDictionary
print("Error could not parse JSON: \(jsonStr)")
}
} catch let parseError {
print(parseError)// Log the error thrown by `JSONObjectWithData`
let jsonStr = NSString(data: data!, encoding: NSUTF8StringEncoding)
print("Error could not parse JSON: '\(jsonStr)'")
}
注意：我从位置模型中删除了地下数组，因为你的json数据不包含它。 最后，您可以将目标数组用作tableview源。快乐的编码...
答案 2 :(得分：1)
您可以使用以下网址创建模型类：http://www.jsoncafe.com/
打开此链接，然后将json放在JSON选项卡中，然后选择所需的任何代码模板。如果需要，还可以添加前缀类名和根类名，否则它是可选的。最后单击“生成”按钮，您的json类就准备好了！！
答案 3 :(得分：0)
模特课：
class test : Unboxable {
let id : String
let imageURl : String
let name : String
let hasVip : Bool
let city : String
required init(unboxer: Unboxer) throws {
self.id = unboxer.unbox(key: "id") ?? ""
self.imageURl = unboxer.unbox(key: "imageUrl") ?? ""
self.name = unboxer.unbox(key: "name") ?? ""
self.hasVip = unboxer.unbox(key: "hasVip") ?? false
self.city = (unboxer.unbox(key: "city") ?? nil)!
}
}
解析json：
if let object = json as? [Any] {
// json is an array
var data :[test] = []
for respObject in object {
var dict = respObject as? Dictionary<String,AnyObject>
dict?["city"] = dict?["location"]?["city"] as AnyObject
let result1: [test] = try unbox(dictionaries: [dict!])
data.append(contentsOf: result1)
}
print(data)
有关详细信息，请点击 https://github.com/JohnSundell/Unbox
答案 4 :(得分：0)
**使用模型类，swiftyjson和alamofire进行API调用，Pod安装alamofire和swiftyjson库，创建集合视图单元格类，创建一个类并编写以下代码 **
import UIKit
import Alamofire
import SwiftyJSON
var myResponse : JSON? = nil
var users : [reasonList] = []
class HomeViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
feedbackApi()
}
func feedbackApi(){
DispatchQueue.main.async {
let url = URL(string: "--------")
let urlRequest = URLRequest(url: url!)
Alamofire.request(urlRequest)
.responseJSON { response in
switch response.result{
case.success(let data):
print("dddd :",data)
self.myResponse = JSON(data)
print(self.myResponse as Any)
let a = self.myResponse![0]["reasonList"]
print(a)
for i in 0..<a.count{
let single = reasonList(reasonListJson: a[i])
self.users.append(single)
}
DispatchQueue.main.async {
self.tableView.reloadData()
}
case .failure(let error):
print("dddd",error)
}
}
}
}
}
创建模型类
import Foundation
import SwiftyJSON
class user{
var deviceId = String()
var deviceName = String()
var deviceLocationId = Int()
var locationName = String()
var welcomeText = String()
var reason=[reasonList]()
init(userJson:JSON) {
self.deviceId = userJson["deviceId"].stringValue
self.deviceName = userJson["deviceName"].stringValue
self.deviceLocationId = userJson["deviceLocationId"].intValue
self.locationName = userJson["locationName"].stringValue
self.welcomeText = userJson["welcomeText"].stringValue
self.reason = [reasonList(reasonListJson: userJson["reason"])]
}}
class reasonList{
var reason = String()
var id = Int()
init(reasonListJson:JSON) {
self.reason = reasonListJson["reason"].stringValue
self.id = reasonListJson["id"].intValue
]}
**在视图中创建集合视图**
import UIKit
import Alamofire
import SwiftyJSON
class ReasonViewController: UIViewController,UICollectionViewDelegate,UICollectionViewDataSource {
override func viewDidLoad() {
super.viewDidLoad()
//DelayCall()
// Do any additional setup after loading the view.
}
func DelayCall() {
DispatchQueue.main.asyncAfter(deadline: .now() + 2.0) { // Change `2.0` to the desired number of seconds.
_ = self.storyboard?.instantiateViewController(withIdentifier: "HomeViewController")as! HomeViewController
self.navigationController?.popViewController(animated: true)
}
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return users.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "ReasonCollectionViewCell", for: indexPath) as! ReasonCollectionViewCell
let useee = users[indexPath.row]
print(useee)
cell.reasonLabel.text = useee.reason
return cell
}}
答案 5 :(得分：0)
您可以使用此网址创建模型类：https://www.json4swift.com/
打开此链接并粘贴您的 JSON 并从下面选择您想要的选项。点击generate，会生成class文件，你可以下载并在你的项目中使用。