我在将代码改为Swift 3并使用Alamofire 4后遇到了问题。
在使用Alamofire 4和Swift 3之前，我的代码完美运行。但是当我改用Swift 3和Alamofire 4后，出现了许多错误。虽然我已经修复了所有错误，但还存在一个问题：我没有得到任何响应！
以下是我目前使用的Swift 3和Alamofire 4代码：
import UIKit
import Alamofire
protocol VideoModelDelegate{
func dataReady()
}
class VideoModel: NSObject {
let API_KEY = "xxxxxxxxxxxxxxxxx"
let UPLOADS_PLAYLIST_ID = "PLc4t1-K0nthvSUhYtc43BiG-Z9LK2mw5D"
var videoArray = [Video]()
var delegate: VideoModelDelegate?
let urladdress = "https://www.googleapis.com/youtube/v3/playlistItems"
func getFeedVideos() {
Alamofire.request("https://www.googleapis.com/youtube/v3/playlistItems", method: .get, parameters: ["part":"snippet", "playlistId": UPLOADS_PLAYLIST_ID,"key": API_KEY, "maxResults": "50"], encoding: JSONEncoding.default).responseJSON(completionHandler: { (response) -> Void in
print("##############################")
print(response)
print("##############################")
if let JSON = response.result.value as? [String: Any] {
print(JSON)
var arrayOfVideos = [Video]()
if let items = JSON["items"] as? [[String : Any]] {
for video in items {
print(JSON)
let videoObj = Video()
videoObj.videoId = (video as NSDictionary).value(forKeyPath:"snippet.resourceId.videoId") as! String
videoObj.videoTitle = (video as NSDictionary).value(forKeyPath:"snippet.title") as! String
videoObj.videoDescription = video["snippet.description"] as! String
if video[ "snippet.thumbnails.maxres.url"] != nil {
videoObj.videoThumbnailUrl = video["snippet.thumbnails.maxres.url"] as! String
}
else if video["snippet.thumbnails.hqdefault.url"] != nil{
videoObj.videoThumbnailUrl = video["snippet.thumbnails.hqdefault.url"] as! String
}
else if video["snippet.thumbnails.sddefault.url"] != nil{
videoObj.videoThumbnailUrl = video["snippet.thumbnails.sddefault.url"] as! String
}
else if video["snippet.thumbnails.mqdefault.url"] != nil{
videoObj.videoThumbnailUrl = video["snippet.thumbnails.mqdefault.url"] as! String
}
else if video["snippet.thumbnails.default.url"] != nil{
videoObj.videoThumbnailUrl = video["snippet.thumbnails.default.url"] as! String
}
else{
}
arrayOfVideos.append(videoObj)
if self.delegate != nil {
self.delegate!.dataReady()
}
}
}
else{
print("NOO")
}
}
})
}
}
我之前的代码一直运行良好：
import UIKit
import Alamofire
protocol VideoModelDelegate{
func dataReady()
}
class VideoModel: NSObject {
let API_KEY = "xxxx"
let UPLOADS_PLAYLIST_ID = Video().playlistID
var videoArray = [Video]()
var delegate:VideoModelDelegate?
func getFeedVideos(){
// Fetch the videos dynamically using YouTube Data API
Alamofire.request(.GET, "https://www.googleapis.com/youtube/v3/playlistItems", parameters: ["part":"snippet", "playlistId":UPLOADS_PLAYLIST_ID, "key":API_KEY, "maxResults":50], encoding: ParameterEncoding.URL, headers: nil).responseJSON { (response) in
if let JSON = response.result.value {
var arrayOfVideos = [Video]()
for video in JSON["items"] as! NSArray{
//print(video)
// Create video objects off of the JSON response
let videoObj = Video()
videoObj.videoId = video.valueForKeyPath("snippet.resourceId.videoId") as! String
videoObj.videoTitle = video.valueForKeyPath("snippet.title") as! String
videoObj.videoDescription = video.valueForKeyPath("snippet.description") as! String
if video.valueForKeyPath("snippet.thumbnails.maxres.url") != nil {
videoObj.videoThumbnailUrl = video.valueForKeyPath("snippet.thumbnails.maxres.url") as! String
}
else if video.valueForKeyPath("snippet.thumbnails.hqdefault.url") != nil{
videoObj.videoThumbnailUrl = video.valueForKeyPath("snippet.thumbnails.hqdefault.url") as! String
}
else if video.valueForKeyPath("snippet.thumbnails.sddefault.url") != nil{
videoObj.videoThumbnailUrl = video.valueForKeyPath("snippet.thumbnails.sddefault.url") as! String
}
else if video.valueForKeyPath("snippet.thumbnails.mqdefault.url") != nil{
videoObj.videoThumbnailUrl = video.valueForKeyPath("snippet.thumbnails.mqdefault.url") as! String
}
else{
videoObj.videoThumbnailUrl = video.valueForKeyPath("snippet.thumbnails.default.url") as! String
}
arrayOfVideos.append(videoObj)
}
// when all the video objects have been constructed, assign the array to the VideoModel property
self.videoArray = arrayOfVideos.reverse()
// Notify the delegate the data is ready
if self.delegate != nil{
self.delegate!.dataReady()
}
}
}
}
}
当我尝试打印响应时，日志中会显示以下内容：
FAILURE: 错误领域=kCFErrorDomainCFNetwork，代码=303，"(null)"，UserInfo={NSErrorPeerAddressKey={length = 28, capacity = 28, bytes = 0x1c1e01bb000000002607f8b040090809 ... 0000200a00000000}，_kCFStreamErrorCodeKey=-2201，_kCFStreamErrorDomainKey=4}
log信息？ - aircraftparameter encoding，现在你正在使用encoding: JSONEncoding.default，你有检查过吗？ - Rashwan L