这是我必须在我的项目中实现的示例json代码，
请告诉我如何编写代码。我多次写代码。它根本不起作用。所以我希望有充分的例子。
在这里我可以看到，首先有一个对象，接下来有一个多个对象，最后一个对象里面有一个数组。请参阅详细信息......
ActivityIndicator.customActivityIndicatory(self.view, startAnimate: true)
let url = URL(string: Configuration.BASE_URL+"/products/"+String(category_id)+"?page=1") // sir
// let url = URL(string: Configuration.BASE_URL+"/products/"+String(category_id)) // sir
URLSession.shared.dataTask(with:url!) { (urlContent, response, error) in
if error != nil {
print(error)
}
else {
do {
let json = try JSONSerialization.jsonObject(with: urlContent!) as! [String:Any]
let items = json["products"] as? [[String: Any]] ?? []
self.product_count = (json["product_count"] as? Int)!
self.arrProduct = [Product2]()
//print(json["products"])
items.forEach { item in
let oProduc2 = Product2()
// oProduc2.current_page = items["current_page"] as! Int
// oProduc2.product_count = items["thumbnail_image_name"] as? String
let dataItems = item["data"] as? [String: Any]
print(dataItems?["data"])
let oProduct2Datas = Product2Data()
oProduct2Datas.name = dataItems?["name"] as? String
// oProduct2Datas.profileImageName = dataItems["profile_image_name"] as? String
oProduct2Datas.id = item["id"] as? Int
oProduct2Datas.name = item["name"] as? String
oProduct2Datas.image = item["image"] as? String
oProduct2Datas.ar_name = item["ar_name"] as? String
//oProduct2Datas.description = item["description"] as? String
//oProduct2Datas.ar_description = item["ar_description"] as? String
oProduct2Datas.price = item["price"] as! NSNumber
oProduct2Datas.quantity = item["quantity"] as? String
oProduct2Datas.is_featured = item["is_featured"] as? String
oProduct2Datas.seller_id = item["seller_id"] as? String
oProduct2Datas.payment_required = item["payment_required"] as? String
oProduct2Datas.is_editors_choice = item["is_editors_choice"] as? String
oProduct2Datas.created_at = item["created_at"] as? String
oProduct2Datas.updated_at = item["updated_at"] as? String
oProduc2.product2Datas = oProduct2Datas
self.arrProduct.append(oProduc2)
// self.arrProduct.append(oProduct)
}
} catch let error as NSError {
print(error)
}
}
// print(self.arrProduct)
DispatchQueue.main.async(execute: {
ActivityIndicator.customActivityIndicatory(self.view, startAnimate: false)
self.totalItemLabel.text = String(self.product_count) + " products"
self.collectionView?.reloadData()
})
}.resume()
{
"error": false,
"product_count": 58,
"products": {
"total": 58,
"per_page": 10,
"current_page": 1,
"last_page": 6,
"next_page_url": "http:\/\/70doors.com\/mobile-app\/products\/21?page=2",
"prev_page_url": null,
"from": 1,
"to": 10,
"data": [
{
"id": 213,
"category_id": 110,
"name": "Test Product",
"ar_name": "Test Product",
"description": "this is a test product",
"ar_description": "this is a test product",
"price": 100,
"quantity": 5,
"is_featured": 0,
"seller_id": 114,
"payment_required": 100,
"is_editors_choice": 0,
"created_at": "2017-07-29 22:47:05",
"updated_at": "2017-07-31 15:24:00",
"image": "http:\/\/70doors.com\/uploads\/media\/1501357670images.jpg",
"get_media": [
{
"id": 882,
"product_id": 213,
"title": "images.jpg",
"file_name": "images.jpg",
"file_in_disk": "1501357670images.jpg",
"created_at": "2017-07-29 22:47:50",
"updated_at": "2017-07-29 22:47:50"
}
]
},
{
"id": 210,
"category_id": 98,
"name": "mShop Combo of Yunteng YT-1288 Selfie Stick and 228 Mini Tripod - Black",
"description": "Material : ABS resin material\r\nDurable and lightweight\r\nDesign : Wrist rope design\r\nEasy to carry\r\nSupported Models : Digital Camera and all iPhone and all Android phones\r\nMade of lightweight material for easy mobility",
"price": 750,
"quantity": 9,
"is_featured": 0,
"seller_id": 123,
"payment_required": 10,
"is_editors_choice": 0,
"created_at": "2017-07-23 08:06:38",
"updated_at": "2017-07-25 23:15:50",
"image": "http:\/\/70doors.com\/uploads\/media\/15007864540.jpg",
"get_media": [
{
"id": 875,
"product_id": 210,
"title": "0.jpg",
"file_name": "0.jpg",
"file_in_disk": "15007864540.jpg",
"created_at": "2017-07-23 08:07:34",
"updated_at": "2017-07-23 08:07:34"
},
{
"id": 876,
"product_id": 210,
"title": "1.jpg",
"file_name": "1.jpg",
"file_in_disk": "15007864541.jpg",
"created_at": "2017-07-23 08:07:34",
"updated_at": "2017-07-23 08:07:34"
},
{
"id": 877,
"product_id": 210,
"title": "2.jpg",
"file_name": "2.jpg",
"file_in_disk": "15007864542.jpg",
"created_at": "2017-07-23 08:07:34",
"updated_at": "2017-07-23 08:07:34"
}
]
},
{
"id": 209,
"category_id": 98,
"name": "mShop Locust Monopod Portable Pocket Selfie Stick - Black",
"price": 125,
"quantity": 10,
"is_featured": 0,
"seller_id": 123,
"payment_required": 10,
"is_editors_choice": 0,
"created_at": "2017-07-23 08:04:41",
"updated_at": "2017-07-23 08:04:41",
"image": "http:\/\/70doors.com\/uploads\/media\/15007863250.jpg",
"get_media": [
{
"id": 872,
"product_id": 209,
"title": "0.jpg",
"file_name": "0.jpg",
"file_in_disk": "15007863250.jpg",
"created_at": "2017-07-23 08:05:25",
"updated_at": "2017-07-23 08:05:25"
},
{
"id": 873,
"product_id": 209,
"title": "1.jpg",
"file_name": "1.jpg",
"file_in_disk": "15007863251.jpg",
"created_at": "2017-07-23 08:05:25",
"updated_at": "2017-07-23 08:05:25"
},
{
"id": 874,
"product_id": 209,
"title": "2.jpg",
"file_name": "2.jpg",
"file_in_disk": "15007863252.jpg",
"created_at": "2017-07-23 08:05:25",
"updated_at": "2017-07-23 08:05:25"
}
]
},
{
"id": 208,
"category_id": 97,
"name": "Huawei Full Cover Tempered Glass Screen Film Protector for P10 Plus - Black",
"description": "Precise Screen Protector\r\nResidue Free\r\nDry Application\r\nProtects from Scratches\r\nSilicone Adhesive\r\nBubble Free",
"price": 399,
"quantity": 5,
"is_featured": 0,
"seller_id": 123,
"payment_required": 10,
"is_editors_choice": 0,
"created_at": "2017-07-23 08:02:59",
"updated_at": "2017-07-23 08:02:59",
"image": "http:\/\/70doors.com\/uploads\/media\/15007862040.jpg",
"get_media": [
{
"id": 871,
"product_id": 208,
"title": "0.jpg",
"file_name": "0.jpg",
"file_in_disk": "15007862040.jpg",
"created_at": "2017-07-23 08:03:24",
"updated_at": "2017-07-23 08:03:24"
}
]
},
{
"id": 207,
"category_id": 96,
"name": "Ldnio SC3604 3Power Socket 6USB Auto Max 3.4A - Grey",
"price": 1500,
"quantity": 6,
"is_featured": 0,
"seller_id": 123,
"payment_required": 10,
"is_editors_choice": 0,
"created_at": "2017-07-23 07:58:59",
"updated_at": "2017-07-26 22:55:09",
"image": "http:\/\/70doors.com\/uploads\/media\/15007859860.jpg",
"get_media": [
{
"id": 869,
"product_id": 207,
"title": "0.jpg",
"file_name": "0.jpg",
"file_in_disk": "15007859860.jpg",
"created_at": "2017-07-23 07:59:46",
"updated_at": "2017-07-23 07:59:46"
},
{
"id": 870,
"product_id": 207,
"title": "1.jpg",
"file_name": "1.jpg",
"file_in_disk": "15007859861.jpg",
"created_at": "2017-07-23 07:59:46",
"updated_at": "2017-07-23 07:59:46"
}
]
},
{
"id": 206,
"category_id": 96,
"name": "Samsung Gear S2 Wireless Charging Dock - Black",
"description": "Wirelessly charge the device\r\nSamsung Gear S2 \/ S2 Classic Smartwatch\r\nPower input: 5 V\r\nPower output: 5 V\r\nOutput current: 700 mA\r\nPower via your computer",
"price": 2650,
"quantity": 4,
"is_featured": 0,
"seller_id": 123,
"payment_required": 10,
"is_editors_choice": 0,
"created_at": "2017-07-23 07:57:26",
"updated_at": "2017-07-26 22:55:09",
"image": "http:\/\/70doors.com\/uploads\/media\/15007858600.jpg",
"get_media": [
{
"id": 868,
"product_id": 206,
"title": "0.jpg",
"file_name": "0.jpg",
"file_in_disk": "15007858600.jpg",
"created_at": "2017-07-23 07:57:40",
"updated_at": "2017-07-23 07:57:40"
}
]
},
{
"id": 205,
"category_id": 96,
"description": "Remax RP-U31\r\n3 USB Charger Plug\r\nInput: 100-200V~50\/60Hz\r\nOutput: 5V~2100mA\r\nPortable Power Adapter",
"price": 800,
"quantity": 10,
"is_featured": 0,
"seller_id": 123,
"payment_required": 10,
"is_editors_choice": 0,
"created_at": "2017-07-23 07:55:36",
"updated_at": "2017-07-23 07:55:36",
"image": "http:\/\/70doors.com\/uploads\/media\/15007857590.jpg",
"get_media": [
{
"id": 865,
"product_id": 205,
"title": "0.jpg",
"file_name": "0.jpg",
"file_in_disk": "15007857590.jpg",
"created_at": "2017-07-23 07:55:59",
"updated_at": "2017-07-23 07:55:59"
},
{
"id": 866,
"product_id": 205,
"title": "1.jpg",
"file_name": "1.jpg",
"file_in_disk": "15007857591.jpg",
"created_at": "2017-07-23 07:55:59",
"updated_at": "2017-07-23 07:55:59"
},
{
"id": 867,
"product_id": 205,
"title": "2.jpg",
"file_name": "2.jpg",
"file_in_disk": "15007857592.jpg",
"created_at": "2017-07-23 07:55:59",
"updated_at": "2017-07-23 07:55:59"
}
]
},
{
"id": 204,
"category_id": 96,
"name": "Samsung Samsung S8\/S8 Plus Fast Qi Wireless Charger",
"description": "Perfect for at home or the office\r\nProvides wireless power whenever you set your device on the stand\r\nCompatible with Samsung S8 and S8 Plus\r\nOfficial Samsung Accessory",
"price": 6999,
"quantity": 3,
"is_featured": 0,
"seller_id": 123,
"payment_required": 10,
"is_editors_choice": 0,
"created_at": "2017-07-23 07:53:23",
"updated_at": "2017-07-25 23:15:50",
"image": "http:\/\/70doors.com\/uploads\/media\/15007856230.jpg",
"get_media": [
{
"id": 859,
"product_id": 204,
"title": "0.jpg",
"file_name": "0.jpg",
"file_in_disk": "15007856230.jpg",
"created_at": "2017-07-23 07:53:43",
"updated_at": "2017-07-23 07:53:43"
},
{
"id": 860,
"product_id": 204,
"title": "1.jpg",
"file_name": "1.jpg",
"file_in_disk": "15007856231.jpg",
"created_at": "2017-07-23 07:53:43",
"updated_at": "2017-07-23 07:53:43"
},
{
"id": 861,
"product_id": 204,
"title": "0.jpg",
"file_name": "0.jpg",
"file_in_disk": "15007856230.jpg",
"created_at": "2017-07-23 07:53:43",
"updated_at": "2017-07-23 07:53:43"
},
{
"id": 862,
"product_id": 204,
"title": "1.jpg",
"file_name": "1.jpg",
"file_in_disk": "15007856231.jpg",
"created_at": "2017-07-23 07:53:43",
"updated_at": "2017-07-23 07:53:43"
},
{
"id": 863,
"product_id": 204,
"title": "0.jpg",
"file_name": "0.jpg",
"file_in_disk": "15007856810.jpg",
"created_at": "2017-07-23 07:54:41",
"updated_at": "2017-07-23 07:54:41"
},
{
"id": 864,
"product_id": 204,
"title": "1.jpg",
"file_name": "1.jpg",
"file_in_disk": "15007856811.jpg",
"created_at": "2017-07-23 07:54:41",
"updated_at": "2017-07-23 07:54:41"
}
]
},
{
"id": 203,
"category_id": 112,
"name": "Nikon D3300 DSLR 24.2MP 3\" With 18-55mm Is II Lens - Black",
"description": "24.2MP DX-Format CMOS Sensor\r\nEXPEED 4 Image Processor\r\nNo Optical Low-Pass Filter\r\n3.0\" 921k-Dot LCD Monitor\r\nFull HD 1080p Video Recording at 60 fps\r\nMulti-CAM 1000 11-Point AF Sensor",
"price": 40700,
"quantity": 5,
"is_featured": 0,
"seller_id": 123,
"payment_required": 10,
"is_editors_choice": 0,
"created_at": "2017-07-23 07:51:11",
"updated_at": "2017-07-23 07:51:11",
"image": "http:\/\/70doors.com\/uploads\/media\/15007854960.jpg",
"get_media": [
{
"id": 856,
"product_id": 203,
"title": "0.jpg",
"file_name": "0.jpg",
"file_in_disk": "15007854960.jpg",
"created_at": "2017-07-23 07:51:36",
"updated_at": "2017-07-23 07:51:36"
},
{
"id": 857,
"product_id": 203,
"title": "1.jpg",
"file_name": "1.jpg",
"file_in_disk": "15007854961.jpg",
"created_at": "2017-07-23 07:51:36",
"updated_at": "2017-07-23 07:51:36"
},
{
"id": 858,
"product_id": 203,
"title": "2.jpg",
"file_name": "2.jpg",
"file_in_disk": "15007854962.jpg",
"created_at": "2017-07-23 07:51:36",
"updated_at": "2017-07-23 07:51:36"
}
]
},
{
"id": 202,
"category_id": 112,
"name": "Generic HD Action Camera 1080P With 2.0 Screen Wi-Fi Connection And Waterproof - Black",
"description": "WiFi connectivity with iOS and Anroid App\r\nThe micro SD card slot can take up to a 32GB Micro SD HC card which at 720p on 30 frames per second can give over 3 hours recording time\r\nComes with 10 different mouting brackets\/clips\r\nNo need to have to buy each individual accessories or a case like some of the other major brands\r\n12.0MP CMOS sensor with high res wide-angle lens",
"price": 8500,
"quantity": 5,
"is_featured": 0,
"seller_id": 123,
"payment_required": 10,
"is_editors_choice": 0,
"created_at": "2017-07-23 07:49:46",
"updated_at": "2017-07-23 07:49:46",
"image": "http:\/\/70doors.com\/uploads\/media\/15007854020.jpg",
"get_media": [
{
"id": 855,
"product_id": 202,
"title": "0.jpg",
"file_name": "0.jpg",
"file_in_disk": "15007854020.jpg",
"created_at": "2017-07-23 07:50:02",
"updated_at": "2017-07-23 07:50:02"
}
]
}
]
}
}
答案 0 :(得分：1)
键products的值是字典，而不是数组，guard评估在错误时退出范围：
guard let products = json["products"] as? [String: Any] else { return }
产品计数是正确的，但删除括号并在as之后加上感叹号（我不知道为什么编译器会建议使用括号）：
self.product_count = json["product_count"] as! Int
现在拿到物品（再次带护卫）：
guard let items = products["data"] as? [[String:Any]] else { return }
并通过循环迭代
for item in items {
let oProduct2Datas = Product2Data()
oProduct2Datas.id = item["id"] as? Int
oProduct2Datas.name = item["name"] as? String
...
答案 1 :(得分：0)
试试这个：
func demo()
{
let str : String = "urlString"
let url = NSURL(string:str)
let request = NSMutableURLRequest(URL: url!)
request.HTTPMethod = "POST"
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
Alamofire.request(request)
.responseString { response in
switch (response.result) {
case .Success(let JSON):
let data = JSON.dataUsingEncoding(NSUTF8StringEncoding)!
do {
let responseString = try NSJSONSerialization.JSONObjectWithData(data, options: []) as? [String:AnyObject]
print(responseString!)
self.prodName = []
let dict = responseString!["products"] as! NSDictionary
let arr = dict["data"] as NSArray
for j in 0..<arr.count{
let dic = arr[j] as! NSMutableDictionary
self.prodName.addObject(dic.valueForKey("name")!)
}
} catch _ as NSError {
//print(error)
}
break
case .Failure:
print("FAILURE")
break
}
}}