在swift中解析对象里面的json数组

本文介绍了在swift中解析对象里面的json数组的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

这是一个示例 json 代码，我必须在我的项目中实现，请告诉我如何编写代码。我多次写代码。它根本不起作用。所以我希望完整的例子。

It is a sample json code which I have to implemented in my project, please tell me how to write code. I wrote codes many times. It is not work at all. So I hope full example please.

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，最后是一个对象内的数组。请查看详细信息...

Here I can see, at first of all has a object, next has one multiple object, finally a array inside a object. Please see details...

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\/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\/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\/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\/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\/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\/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\/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\/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\/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\/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\/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" } ] } ] } }

推荐答案

key products 的值是一个字典，而不是一个数组， guard 要退出的评估错误的范围：

The value for key products is a dictionary, not an array, guard the evaluation to exit the scope on an error:

guard let products = json["products"] as? [String: Any] else { return }

产品计数正确但删除括号并放入之后的感叹号为（我不知道为什么编译器会建议括号）：

The product count is correct but remove the parentheses and put the exclamation mark after as (I have no idea why the compiler suggests the parentheses):

self.product_count = json["product_count"] as! Int

现在获取物品（再次带护卫）：

Now get the items (again with a guard):

guard let items = products["data"] as? [[String:Any]] else { return }

并循环遍历

for item in items { let oProduct2Datas = Product2Data() oProduct2Datas.id = item["id"] as? Int oProduct2Datas.name = item["name"] as? String ...