swift - 修改密码异常如何处理？

Question

在我的应用程序中更改密码的功能:

@IBAction func changePassword(_ sender: Any) {

    let isMatched = NSPredicate(format:"SELF MATCHES %@", regexAllValidation).evaluate(with: newPasswordField.text)
    if (isMatched == true){
        let auth = Auth()
        auth.changePassword(oldPassword: oldPasswordField.text!,newPassword: newPasswordField.text!)
        displayAlert(title: "Correct password", message: "Password changed!")
    }
}

类授权:

func changePassword(oldPassword: String, newPassword: String){

    let user = 
        AppDelegate.defaultUserPool().currentUser()?.changePassword(oldPassword, proposedPassword: newPassword)
            AppDelegate.defaultUserPool().currentUser()?.clearSession()
}

当我使用错误的旧密码调用此函数时，我在控制台中收到:

Response body:
{"__type":"NotAuthorizedException","message":"Incorrect username or password."}

"x-amzn-errormessage" = "Incorrect username or password.";
    "x-amzn-errortype" = "NotAuthorizedException:";

我想显示一条警告，通知用户密码错误。怎么办？

Answer 1

不确定您使用的是哪个框架，但如果您使用 swift 和 cognito，那么我推荐 amplify 框架，更具体地说是 AWSMobileClient。

它充满了常见的功能，并且大量记录了像您提到的常见场景。

链接:https://aws-amplify.github.io/docs/sdk/ios/authentication

简而言之，您应该具有完成闭包，可以在其中处理不同的场景并在需要时显示警报。例如，使用 AWSMobileClient 您可以

AWSMobileClient.default().confirmForgotPassword(username: "my_username", newPassword: "MyNewPassword123!!", confirmationCode: "ConfirmationCode") { (forgotPasswordResult, error) in
    if let forgotPasswordResult = forgotPasswordResult {
        switch(forgotPasswordResult.forgotPasswordState) {
        case .done:
            print("Password changed successfully")
        default:
            print("Error: Could not change password.")
        }
    } else if let error = error {
        print("Error occurred: \(error.localizedDescription)")
    }
}