我在我的iOS应用程序中使用AFNetworking,并且对于它所做的所有GET请求,我从基本URL构建url,然后使用NSDictionary键值对添加参数。
问题是我需要相同的键来表示不同的值。
以下是我需要最终URL的示例 -
http://example.com/.....&id=21212&id=21212&id=33232
NSDictionary中不可能在相同的键中具有不同的值。所以我尝试了NSSet但是没有用。
let productIDSet: Set = [prodIDArray]
let paramDict = NSMutableDictionary()
paramDict.setObject(productIDSet, forKey: "id")
你需要的只是NSURLComponents
。基本思想是为你的id创建一堆查询项。这是您可以粘贴到游乐场的代码:
import UIKit
import XCPlayground
let queryItems = [NSURLQueryItem(name: "id", value: "2121"), NSURLQueryItem(name: "id", value: "3232")]
let urlComps = NSURLComponents(string: "www.apple.com/help")!
urlComps.queryItems = queryItems
let URL = urlComps.URL!
XCPlaygroundPage.currentPage.captureValue(URL.absoluteString, withIdentifier: "URL")
你应该看到一个输出
呜呜呜.apple.com/help?ID=2121&ID=3232
它可以将QueryItem添加到现有URL。
extension URL {
func appending(_ queryItem: String, value: String?) -> URL {
guard var urlComponents = URLComponents(string: absoluteString) else { return absoluteURL }
// Create array of existing query items
var queryItems: [URLQueryItem] = urlComponents.queryItems ?? []
// Create query item
let queryItem = URLQueryItem(name: queryItem, value: value)
// Append the new query item in the existing query items array
queryItems.append(queryItem)
// Append updated query items array in the url component object
urlComponents.queryItems = queryItems
// Returns the url from new url components
return urlComponents.url!
}
}
如何使用
var url = URL(string: "https://www.example.com")!
let finalURL = url.appending("test", value: "123")
.appending("test2", value: nil)
func queryString(_ value: String, params: [String: String]) -> String? {
var components = URLComponents(string: value)
components?.queryItems = params.map { element in URLQueryItem(name: element.key, value: element.value) }
return components?.url?.absoluteString
}
用于附加查询项的URL扩展,类似于Bhuvan Bhatt的想法,但具有不同的签名:
nil
而不是self
),从而允许自定义处理URL不符合RFC 3986的情况。extension URL {
/// Returns a new URL by adding the query items, or nil if the URL doesn't support it.
/// URL must conform to RFC 3986.
func appending(_ queryItems: [URLQueryItem]) -> URL? {
guard var urlComponents = URLComponents(url: self, resolvingAgainstBaseURL: true) else {
// URL is not conforming to RFC 3986 (maybe it is only conforming to RFC 1808, RFC 1738, and RFC 2732)
return nil
}
// append the query items to the existing ones
urlComponents.queryItems = (urlComponents.queryItems ?? []) + queryItems
// return the url from new url components
return urlComponents.url
}
}
let url = URL(string: "https://example.com/...")!
let queryItems = [URLQueryItem(name: "id", value: nil),
URLQueryItem(name: "id", value: "22"),
URLQueryItem(name: "id", value: "33")]
let newUrl = url.appending(queryItems)!
print(newUrl)
输出:
在Swift Forming URL中有多个参数
func rateConversionURL(with array: [String]) -> URL? {
var components = URLComponents()
components.scheme = "https"
components.host = "example.com"
components.path = "/hello/"
components.queryItems = array.map { URLQueryItem(name: "value", value: $0)}
return components.url
}
我想你只需做这样的事情:
let params = ["id" : [1, 2, 3, 4], ...];
将被编码为:.... id%5B%5D = 1&id%5B%5D = 2&id%5B%5D = 3&id%5B%5D = 4 ....