Android 和 AWS Cognito - 无法使用混淆器解组错误响应

Question

我正在使用 Android 的 AWS cognito SDK，版本 2.4.3。它在调试版本上工作得很好，但在发布版本上，如果出现错误，我无法得到关于异常的正确描述。相反，我得到这个

com.amazonaws.AmazonClientException: Unable to unmarshall error response (<init> [class java.lang.String]). Response Code: 400, Response Text: Bad Request
    at com.amazonaws.http.AmazonHttpClient.a(Unknown Source)
    at com.amazonaws.http.AmazonHttpClient.b(Unknown Source)
    at com.amazonaws.http.AmazonHttpClient.a(Unknown Source)
    at com.amazonaws.services.cognitoidentityprovider.AmazonCognitoIdentityProviderClient.a(Unknown Source)
    at com.amazonaws.services.cognitoidentityprovider.AmazonCognitoIdentityProviderClient.a(Unknown Source)
    at com.amazonaws.mobileconnectors.cognitoidentityprovider.CognitoUserPool.a(Unknown Source)
    at com.amazonaws.mobileconnectors.cognitoidentityprovider.CognitoUserPool.a(Unknown Source)
    at com.amazonaws.mobileconnectors.cognitoidentityprovider.CognitoUserPool.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:818)
Caused by: java.lang.NoSuchMethodException: <init> [class java.lang.String]
    at java.lang.Class.getConstructor(Class.java:531)
    at java.lang.Class.getConstructor(Class.java:495)
    at com.amazonaws.transform.AbstractErrorUnmarshaller.a(Unknown Source)
    at com.amazonaws.transform.JsonErrorUnmarshaller.b(Unknown Source)
    at com.amazonaws.services.cognitoidentityprovider.model.transform.InvalidParameterExceptionUnmarshaller.b(Unknown Source)
    at com.amazonaws.http.JsonErrorResponseHandler.a(Unknown Source)
    at com.amazonaws.http.JsonErrorResponseHandler.b(Unknown Source)
    at com.amazonaws.http.JsonErrorResponseHandler.a(Unknown Source)
    at com.amazonaws.http.AmazonHttpClient.a(Unknown Source) 
    at com.amazonaws.http.AmazonHttpClient.b(Unknown Source) 
    at com.amazonaws.http.AmazonHttpClient.a(Unknown Source) 
    at com.amazonaws.services.cognitoidentityprovider.AmazonCognitoIdentityProviderClient.a(Unknown Source) 
    at com.amazonaws.services.cognitoidentityprovider.AmazonCognitoIdentityProviderClient.a(Unknown Source) 
    at com.amazonaws.mobileconnectors.cognitoidentityprovider.CognitoUserPool.a(Unknown Source) 
    at com.amazonaws.mobileconnectors.cognitoidentityprovider.CognitoUserPool.a(Unknown Source) 
    at com.amazonaws.mobileconnectors.cognitoidentityprovider.CognitoUserPool.run(Unknown Source) 
    at java.lang.Thread.run(Thread.java:818)

在调试版本中，我收到一个异常，详细说明了错误。但是，如果所有字段都写得很好，则在发布和调试中用户注册都会成功。我在发布时使用了混淆器，我正在应用 this file

中的规则

任何对此问题的帮助将不胜感激。

Answer 1

在尝试不同的 Proguard 设置后，除了 AWS SDK 存储库中建议的配置之外，以下是最小配置，以使其正常工作

-keep class com.amazonaws.services.cognitoidentityprovider.** { *; }

必须添加到 app/proguard-rules.pro

Answer 2

AWS 核心库中的类也可能出现解组错误，而不仅仅是 com.amazonaws.services.cognitoidentityprovider。此规则将防止所有 AWS 库异常崩溃：

-keep class * extends com.amazonaws.AmazonClientException { *; }

Android 和 AWS Cognito - 无法使用混淆器解组错误响应

Android and AWS Cognito - Unable to unmarshall error response with proguard

android

amazon-cognito

aws-sdk

android-proguard