Alamofire 不断被取消

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【中文标题】Alamofire 不断被取消【英文标题】:Alamofire keeps getting cancelled 【发布时间】:2017-02-05 13:45:57 【问题描述】:
  @UIApplicationMain
  class AppDelegate: UIResponder,     UIApplicationDelegate,UNUserNotificationCenterDelegate 
var window: UIWindow?
var manager1: SessionManager?
var manager2: SessionManager?
let commons:Commons = Commons()
var selected = 0
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions:    [UIApplicationLaunchOptionsKey: Any]?) -> Bool 
    return true

func getDocumentsDirectory() -> URL 
    let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
    let documentsDirectory = paths[0]
    return documentsDirectory
    
func uploade()

    if(selected == 0)
    
        let realm = try! Realm()            
        let uploadAuditInfo = realm.objects(UploadAudit.self)
        var uploadAudit =  [UploadAudit]()            
        let uploadDistInfo = realm.objects(UploadData.self)
        var uploadDist =  [UploadData]()            
        for i in 0 ..< uploadAuditInfo.count 
            if let result = uploadAuditInfo[i] as? UploadAudit 
                uploadAudit.append(result)
            
                    
        for i in 0 ..< uploadDistInfo.count 
            if let result = uploadDistInfo[i] as? UploadData 
                uploadDist.append(result)
            
           
        if(uploadAudit.count > 0)
                       
            selected = 1
            let upload = uploadAudit[0]
            let fileNameToDelete = upload.fileName
            var filePath = ""
            let dirs : [String] = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory, FileManager.SearchPathDomainMask.allDomainsMask, true)                
            if dirs.count > 0 
                let dir = dirs[0] //documents directory
                filePath = dir.appendingFormat("/" + fileNameToDelete)           
             else                
                return
                
            let lang = self.commons.getLanguage()
            let fileManager = FileManager.default
            if fileManager.fileExists(atPath: filePath)
            
                let image = UIImage(contentsOfFile: filePath)
                let ids = upload.id
                let params  = upload.params
                let name1 = upload.fileName
                let url = self.commons.getUrl()
                let vas1 = lang+params
                let vas2 = url+"rest/secure/"+String(ids)+"/submit?language="
                let vas = vas2+vas1            
                print("upload audit111")
                uploadFile(fileName: name1, mimeType:"application/octed-stream", image: image!, url:vas, id: ids)
            
            else
            
                try! realm.write 
                    realm.delete(upload)
                
                selected = 0
                self.uploade()
            
        
        else if(uploadDist.count > 0)
        
            selected = 1
            let upload = uploadDist[0]
            let fileNameToDelete = upload.fileName
            var filePath = ""
            let dirs : [String] = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory, FileManager.SearchPathDomainMask.allDomainsMask, true)                
            if dirs.count > 0 
                let dir = dirs[0] //documents directory
                filePath = dir.appendingFormat("/" + fileNameToDelete)   
             else                    
                return
            
            let fileManager = FileManager.default
            if fileManager.fileExists(atPath: filePath)
            
                let lang = self.commons.getLanguage()
                let image = UIImage(contentsOfFile: filePath)
                let ids = upload.id
                let params  = upload.params
                let name1 = upload.fileName  
                let url = self.commons.getUrl()
                let vas1 = lang+params
                let vas2 = url+"rest/secure/another/"+String(ids)+"/submit?language="
                let vas = vas2+vas1
                print("upload dist111")
                uploadFileDist(fileName: name1, mimeType:"application/octed-stream", image: image!, url:vas, id: ids)
            
            else
            
                try! realm.write 
                    realm.delete(upload)
                
                selected = 0
                self.uploade()
            
        
        else
              
        
    else
                
    

func uploadFileDist(fileName: String, mimeType: String, image: UIImage, url: String, id: Int )

    let preferences = UserDefaults.standard
    //NSUserDefaults.standardUserDefaults()
    let currentLevelKey = "sessionId"
    if UserDefaults.standard.object(forKey: currentLevelKey) == nil             
     else 
        let name = preferences.string(forKey: currentLevelKey)
        DispatchQueue.global().async 
            let sessionName = "JSESSIONID="+name!
            // get headers
            let headers = self.commons.getHeader(cookie: sessionName)
            // get language                
            // get configuration
            let configuration = self.commons.getConfiguration(timeout: 600)
            self.manager2 = Alamofire.SessionManager(configuration: configuration)
            // get base url                
            let image_data = UIImageJPEGRepresentation(image, 0.4)                
            let uuid = UUID().uuidString
            let uuid2 = UUID().uuidString
            let nameOfImage = "profile-"+uuid+"--"+uuid2                
            print("dist upload")
            self.manager2!.upload(multipartFormData:  (MultipartFormData) in                    
                MultipartFormData.append(image_data!, withName: "uploadFile", fileName: nameOfImage+".jpeg", mimeType: mimeType)
            , to: url, method: .post, headers: headers, encodingCompletion:  (result) in
                //self.manager1!.session.invalidateAndCancel()
                 print("dist result")
                switch result                     
                case .success( let upload , _, _):
                    upload.responseObject(keyPath: "") (response: DataResponse<User>) in
                        let realm = try! Realm()
                        let ps = "id == "+String(id)
                        let datas = realm.objects(UploadData.self).filter(ps)
                        let datas2 = realm.objects(DistRealM.self).filter(ps)
                        try! realm.write 
                            realm.delete(datas)
                            realm.delete(datas2)
                        
                        self.selected = 0
                        self.uploade()
                                          
               case .failure( _):
                    self.selected = 0
                                   
            )
        
    

 func uploadFile(fileName: String, mimeType: String, image: UIImage, url: String, id: Int )

    let preferences = UserDefaults.standard
    //NSUserDefaults.standardUserDefaults()
    let currentLevelKey = "sessionId"
    if UserDefaults.standard.object(forKey: currentLevelKey) == nil             
     else 
        let name = preferences.string(forKey: currentLevelKey)
        DispatchQueue.global().async                 
            // set session cookie
            let sessionName = "JSESSIONID="+name!
            // get headers
            let headers = self.commons.getHeader(cookie: sessionName)
            // get language                
            // get configuration
            let configuration = self.commons.getConfiguration(timeout: 600)
            self.manager2 = Alamofire.SessionManager(configuration: configuration)
            // get base url
             print(" audit upload ")
            let image_data = UIImageJPEGRepresentation(image, 0.4)
            let uuid = UUID().uuidString
            let uuid2 = UUID().uuidString
            let nameOfImage = "profile-"+uuid+"--"+uuid2
            self.manager2!.upload(multipartFormData:  (MultipartFormData) in                    
                MultipartFormData.append(image_data!, withName: "uploadFile", fileName: nameOfImage+".jpeg", mimeType: mimeType)
            , to: url, method: .post, headers: headers, encodingCompletion:  (result) in
                // self.manager1!.session.invalidateAndCancel()
                 print("audit result")
                switch result                         
                case .success( let upload, _, _):
                    upload.responseObject(keyPath: "") (response: DataResponse<User>) in
                        debugPrint(response)
                        let realm = try! Realm()
                        let ps = "id == "+String(id)
                        let datas = realm.objects(UploadAudit.self).filter(ps)
                        let datas2 = realm.objects(AuditRealM.self).filter(ps)
                        try! realm.write 
                            realm.delete(datas)
                            realm.delete(datas2)
                        
                        self.selected = 0
                        self.uploade()
                                            
                case .failure( _):
                    self.selected = 0
                                    
            )
        
    

我在 swift 3 中使用 alamofire lirbary 执行此操作,同样的调用在其他地方完美运行。但是在这里,我不断收到 Domain=NSURLErrorDomain Code=-999 "cancelled" UserInfo=NSErrorFailingURLKey=

为什么我的 url 调用总是无缘无故地被取消?同样的调用在其他地方完美运行。

【问题讨论】:

【参考方案1】:

你没有说任何关于应用传输安全设置,所以我试一试:

可能发生的情况是 App Transport Security 阻止了您的请求。

ios 9 和 OS X v10.11 中引入的应用传输安全 (ATS) 通过要求应用使用通过 HTTPS 的安全网络连接来提高用户的安全性和隐私性。

您通过更高级别 API 进行的通信需要使用具有前向保密性的 TLS 版本 1.2 进行加密。如果您尝试建立不符合此要求的连接,则会引发错误。如果您的应用需要向不安全的域发出请求,您必须在应用的 Info.plist 文件中指定该域。

在 info.plist 文件中创建异常很容易。 添加一个NSAppTransportSecurity 键,并在下面添加一个NSExceptionDomains 的字典。然后将您的域添加为键,您无需在字符串值中写入任何内容。还要添加一个NSAllowsArbitraryLoads 密钥以允许不安全的连接

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSExceptionDomains</key>
    <dict>
        <key>unsecuredomain.com</key>
        <string></string>
        <key>sub.unsecure.co.uk</key>
        <string></string>
    </dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
</dict>

【讨论】:

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