Amazon LEX 返回 iOS Swift 错误

Question

我正在尝试将 Amazon LEX 集成到我的应用程序中。最初我添加了 Amazon cognito，并从中获得了 Cognito Id。接下来，当我尝试与 LEX 通信时，返回了这样的错误

Error Domain=com.amazonaws.AWSLexErrorDomain Code=0 "null" UserInfo={NSLocalizedDescription=null, NSLocalizedFailureReason=AccessDeniedException:http://internal.amazon.com/coral/com.amazon.coral.service/}

AppDelegate 代码：

{
        // Override point for customization after application launch.


        AWSDDLog.sharedInstance.logLevel = .verbose
        let credentialProvider = AWSCognitoCredentialsProvider(regionType: .USEast1, identityPoolId: “given the Id”)
        let configuration = AWSServiceConfiguration(region: .USEast1, credentialsProvider: credentialProvider)
        AWSServiceManager.default().defaultServiceConfiguration = configuration


        credentialProvider.getIdentityId().continueWith(block: { (task) -> AnyObject? in

            if (task.error != nil)
            {
                print("Error: " + task.error!.localizedDescription)
            }
            else
            {
                let cognitoId = task.result!
                print("Cognito Id is, \(cognitoId)")
            }

            return task

        })

        let chatConfig = AWSLexInteractionKitConfig.defaultInteractionKitConfig(withBotName: "BookTrip", botAlias: "Chatting")
        AWSLexInteractionKit.register(with: configuration!, interactionKitConfiguration: chatConfig, forKey: "AWSLexVoiceButton")

        chatConfig.autoPlayback = false
        //AWSLexInteractionKit.register(with: configuration!, interactionKitConfiguration: chatConfig, forKey: "chatConfig")
    return true
    }

viewController代码：

override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

       (self.voiceButton)?.delegate = self
   // (self.voiceButton as AWSLexVoiceButton).delegate = self


    }

    func voiceButton(_ button: AWSLexVoiceButton, on response: AWSLexVoiceButtonResponse) {
        DispatchQueue.main.async(execute: {
            // `inputranscript` is the transcript of the voice input to the operation
            print("Input Transcript: \(String(describing: response.inputTranscript))")
            if let inputTranscript = response.inputTranscript {
                self.input.text = "\"\(inputTranscript)\""
            }
            print("on text output \(String(describing: response.outputText))")
            self.output.text = response.outputText
        })
    }

    public func voiceButton(_ button: AWSLexVoiceButton, onError error: Error) {
        print("error \(error)")
    }

我需要将 cognito Id 与 LEX 一起传递吗？谁能帮我看看这里出了什么问题。提前致谢。

Answer 1

我终于想出了解决办法。问题在于 IAM 许可。您必须在 IAM 控制台中附加权限策略。希望对你有帮助。

Answer 2

似乎与 Cognito 身份池角色关联的 IAM 策略没有 AmazonLexFullAccess 权限。要添加权限，请参阅以下步骤：

去编辑身份池，检查你对未授权和授权的角色。
Select IAM 服务然后搜索角色，然后 select 您分配给未授权和授权的角色。
单击特定角色并附加 AmazonLexFullAccess 策略。

希望这些步骤对您有所帮助。

Amazon LEX 返回 iOS Swift 错误

Amazon LEX is returning error with iOS Swift

amazon-web-services

xamarin.ios

amazon-cognito

swift3

amazon-lex