无法在swift 3中解析Json？

• Z时代
• 2024-01-10
• 分类：问答

这里我试图解析来自本地服务器的数据，但无法解析它，它返回的是空数据，下面是我的模型类，从中我传递给表视图的数据，任何人都可以帮助我实现它？无法在swift 3中解析Json？

在这里，我曾附我的图像下面的JSON格式：

代码：

var homePageModel = [HomeBanner]() 
func HomeBannerDownloadJsonWithURL(){ 
     let url = URL(string: homePageUrl)! 
     let task = URLSession.shared.dataTask(with: url) { (data, response, error) in 
      if error != nil { print(error!); return } 
      do { 
       if let jsonObj = try JSONSerialization.jsonObject(with: data!) as? [[String:Any]] { 
        for item in jsonObj { 
         print(item) 
         for dict in item { 
          print(dict) 
          let dict = HomeBanner(json: item) 
          self.homePageModel.append(dict!) 
          print(self.homePageModel) 
         } 
        } 
        print(self.homePageModel) 
        DispatchQueue.main.async { 
         self.homeTableView.delegate = self 
         self.homeTableView.dataSource = self 
         self.homeTableView.reloadData() 
        } 
       } 
      } catch { 
       print(error) 
      } 
     } 
     task.resume() 
    } 
    struct HomeBanner { 
    let title : String? 
    let titleInArabic : String? 
    let showTitle : String? 
    var banner = [ChildrenBanners]() 
    init?(json : [String:Any]) { 
     if let customAttribute = json["childran_banners"] as? [[String: AnyObject]] { 
       var result = [ChildrenBanners]() 
       for obj in customAttribute { 
        result.append(ChildrenBanners(json: obj as! [String : String])!) 
       } 
       self.banner = result 
       } else { 
        self.banner = [ChildrenBanners]() 
       } 
     self.title = json["title"] as? String ?? "" 
     print(self.title) 
     self.titleInArabic = json["title_in_arabic"] as? String ?? "" 
     self.showTitle = json["show_title"] as? String ?? "" 
    } 
} 
struct ChildrenBanners { 
    let bannerId : String? 
    let name : String? 
    let status : String? 
    let sliderId : String? 
    let desktopImage : String? 
    let mobileImage : String? 
    let imageAlt : String? 
    let sortOrder : String? 
    let startTime : String? 
    let endTime : String? 
    init?(json : [String:Any]) { 
     self.bannerId = json["banner_id"] as? String ?? "" 
     print(self.bannerId) 
     self.name = json["name"] as? String ?? "" 
     self.status = json["status"] as? String ?? "" 
     self.sliderId = json["slider_id"] as? String ?? "" 
     self.desktopImage = json["desktop_image"] as? String ?? "" 
     self.mobileImage = json["mobile_image"] as? String ?? "" 
     self.imageAlt = json["image_alt"] as? String ?? "" 
     self.sortOrder = json["sort_order"] as? String ?? "" 
     self.startTime = json["start_time"] as? String ?? "" 
     self.endTime = json["end_time"] as? String ?? "" 
    } 
} 

回答：

if let data = data, let jsonObj = try JSONSerialization.jsonObject(with: data) as? [[String:[String:Any]]] { 
    for item in jsonObj { 
     for (_, dict) in item { 
      if let obj = HomeBanner(json: dict) { 
       self.homePageModel.append(obj) 
      } 
     } 
    } 
} 

for dict in item {        
    let dict = HomeBanner(json: item) 
    // .... 
} 

回答：

  if let jsonObj = try JSONSerialization.jsonObject(with: data!) as? [[String:Any]] { 
       self.homePageModel = jsonObj.map{HomeBanner(json: $0)} 
       print(self.homePageModel) 
       DispatchQueue.main.async { 
        self.homeTableView.delegate = self 
        self.homeTableView.dataSource = self 
        self.homeTableView.reloadData() 
       } 
      } 
     } catch { 
      print(error) 
     } 

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