Android 和 AWS Cognito - 无法使用 proguard 解组错误响应

Posted 2023-03-27

【中文标题】Android 和 AWS Cognito - 无法使用 proguard 解组错误响应

【英文标题】：Android and AWS Cognito - Unable to unmarshall error response with proguard

【发布时间】：2017-10-27 16:30:57

【问题描述】：

我正在使用适用于 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，我得到了这个

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$1.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$1.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，那么在发布和调试用户注册都会成功。我在发布时使用 proguard，我正在应用来自 this file 的规则

任何有关此问题的帮助将不胜感激。

【参考方案1】：

尝试不同的 Proguard 设置后，以下是 AWS SDK 存储库中建议的最低配置，以使其正常工作

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

必须添加到app/proguard-rules.pro

【参考方案2】：

AWS 核心库中的类也可能发生解组错误，而不仅仅是com.amazonaws.services.cognitoidentityprovider。此规则将防止所有 AWS lib 异常发生这种崩溃：

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