嘗試使用SwiftyJSON解析JSON數據3使用SwiftyJSON

Question

我想解析一些通過API調用獲得的JSON數據。我首先嚐試了艱難的方式：沒有圖書館。如果這不起作用，我嘗試了SwiftyJSON，但這也沒有什麼幫助。我試圖從啤酒中獲得所有的子信息。

在這裏你可以看到我打印出整個JSON'對象'的位置。

斯威夫特

let json = JSON(data: JSONData) 
print(json); 

輸出

{ 
    "meta" : { 
    "init_time" : { 
     "measure" : "seconds", 
     "time" : 0.011 
    }, 
    "response_time" : { 
     "measure" : "seconds", 
     "time" : 0.056 
    }, 
    "code" : 200 
    }, 
    "notifications" : [ 

    ], 
    "response" : { 
    "macro" : { 
     "count" : 10, 
     "items" : [ 
     { 
      "beer" : { 
      "wish_list" : false, 
      "beer_abv" : 5.4, 
      "auth_rating" : 0, 
      "style_name" : "Witbier", 
      "beer_label" : "https:\/\/untappd.akamaized.net\/site\/beer_logos\/beer-3839_207a3_sm.jpeg", 
      "bid" : 3839, 
      "beer_name" : "Belgian White", 
      "beer_style" : "Witbier" 
      }, 
      "total_count" : 668, 
      "your_count" : 0, 
      "brewery" : { 
      "location" : { 
       "lng" : -104.992, 
       "lat" : 39.7561, 
       "brewery_city" : "Denver", 
       "brewery_state" : "CO" 
      }, 
      "brewery_name" : "Blue Moon Brewing Company", 
      "brewery_slug" : "blue-moon-brewing-company", 
      "brewery_id" : 127804, 
      "country_name" : "United States", 
      "brewery_label" : "https:\/\/untappd.akamaized.net\/site\/brewery_logos\/brewery-127804_1a670.jpeg", 
      "contact" : { 
       "twitter" : "BlueMoonBrewCo", 
       "facebook" : "https:\/\/www.facebook.com\/bluemoon", 
       "url" : "http:\/\/www.bluemoonbrewingcompany.com\/", 
       "instagram" : "" 
      }, 
      "brewery_active" : 1 
      } 
     }, 

在這裏，我去了具體的分層次的。

夫特

let json = JSON(data: JSONData) 
let list = json["response","micro","items"] 
print(list) 

輸出

[ 
    { 
    "beer" : { 
     "wish_list" : false, 
     "beer_abv" : 4.7, 
     "auth_rating" : 0, 
     "style_name" : "IPA - Session \/ India Session Ale", 
     "beer_label" : "https:\/\/untappd.akamaized.net\/site\/beer_logos\/beer-36834_82ca8_sm.jpeg", 
     "bid" : 36834, 
     "beer_name" : "All Day IPA", 
     "beer_style" : "IPA - Session \/ India Session Ale" 
    }, 
    "total_count" : 548, 
    "your_count" : 0, 
    "brewery" : { 
     "location" : { 
     "lng" : -85.6735, 
     "lat" : 42.9585, 
     "brewery_city" : "Grand Rapids", 
     "brewery_state" : "MI" 
     }, 
     "brewery_name" : "Founders Brewing Co.", 
     "brewery_slug" : "founders-brewing-co", 
     "brewery_id" : 549, 
     "country_name" : "United States", 
     "brewery_label" : "https:\/\/untappd.akamaized.net\/site\/brewery_logos\/brewery-foundersbrewingcompany_549.jpeg", 
     "contact" : { 
     "twitter" : "foundersbrewing", 
     "facebook" : "http:\/\/www.facebook.com\/foundersbrewing", 
     "url" : "http:\/\/www.foundersbrewing.com\/", 
     "instagram" : "foundersbrewing" 
     }, 
     "brewery_active" : 1 
    } 
    }, 

當我加入 「啤酒」。我得到了一個「空」 - 返回。我認爲不是因爲方括號的不同。 「[]」=列表和「{}」=詞典。但我仍然無法解決它。

（我是不是一個iOS開發者，只是他與swift3的首次互動的學生）

斯威夫特

let json = JSON(data: JSONData) 
let list = json["response","micro","items","beer"] 
print(list) 

輸出

null 

Answer 1

可以使用解析響應對象像這樣的SwiftyJSON。而你的items對象是啤酒陣列。希望你能明白你的想法。

let json = JSON(data: JSONData) 
let list = json["response"]["micro"]["items"].arrayValue 

for beerObjects in list { 

     // You can get sub info of beer like this. 
     let beer_name = beerObjects["beer"]["beer_name"].stringValue 
     let total_count = beerObjects["total_count"].intValue 
     let brewery_city = beerObjects["brewery"]["location"]["brewery_city"] 

     // or parse information which you need 
}