arrays - 将复杂的 json 发布到 api
问题描述
我想发布json。这是我的参数的样子:
let parameterDictionary = [
"customer_name": "John Doe",
"customer_phone": "1234567890",
"customer_address": "Velit incidunt odit atque quaerat ipsa.",
"note": "Sequi quisquam ab ea et",
"datetime_requested": "2020-06-19 09:04:25",
"products": [
[
"id": 53,
"amount": 15
],
[
"id": 63,
"amount": 12
]
]] as [String : Any]
我可以毫无问题地发帖。但是参数是硬编码的。我有一个Items
包含id
and的结构amount
。
struct Items {
var id: Int
var amount: Int
}
假设我有这样的项目:
let items = [Items(id: 53, amount: 12), Items(id: 64, amount: 29)]
我怎样才能在我的parameterDictionary
.?中实现这个?
如果您需要我如何处理发布:
let Url = String(format: "https://example.com/api/v1/order")
guard let serviceUrl = URL(string: Url) else { return }
var items = [Items(id: 53, amount: 12), Items(id: 64, amount: 29)]
let parameterDictionary = [
"customer_name": "Didar J",
"customer_phone": "1234567890",
"customer_address": "Velit incidunt odit atque quaerat ipsa.",
"note": "Sequi quisquam ab ea et",
"datetime_requested": "2020-06-19 09:04:25",
"products": [
[
"id": 53,
"amount": 15
],
[
"id": 63,
"amount": 12
]
]] as [String : Any]
var request = URLRequest(url: serviceUrl)
request.httpMethod = "POST"
request.setValue("Application/json", forHTTPHeaderField: "Content-Type")
guard let httpBody = try? JSONSerialization.data(withJSONObject: parameterDictionary, options: []) else {
return
}
request.httpBody = httpBody
let session = URLSession.shared
session.dataTask(with: request) { (data, response, error) in
if let response = response {
print(response)
}
if let data = data {
do {
let json = try JSONSerialization.jsonObject(with: data, options: [])
print(json)
} catch {
print(error)
}
}
}.resume()
解决方案
对于少数结构成员,我建议使用计算属性将实例映射到字典
struct Item {
var id: Int
var amount: Int
var dictionaryRepresentation : [String:Int] { return ["id":id, "amount":amount] }
}
let items = [Item(id: 53, amount: 12), Item(id: 64, amount: 29)]
let itemArray = items.map{$0.dictionaryRepresentation}
let parameterDictionary = [
"customer_name": "Didar J",
"customer_phone": "1234567890",
"customer_address": "Velit incidunt odit atque quaerat ipsa.",
"note": "Sequi quisquam ab ea et",
"datetime_requested": "2020-06-19 09:04:25",
"products": itemArray] as [String : Any]
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