错误：任务执行失败'：app：packageAllDebugClassesForMultiDex'java.util.zip.ZipException：重复项：com / amazonaws / auth / [英] Error:Execution failed for task ':app:packageAllDebugClassesForMultiDex' java.util.zip.ZipException: duplicate entry: com/amazonaws/auth/

问题描述

我正在尝试在我的项目中使用Amazon AWS服务。我已经添加了依赖关系;该项目建立良好。
当我在手机上运行应用程序时，出现以下错误：

 错误：执行任务失败：app ：packageAllDebugClassesForMultiDex。 
> java.util.zip.ZipException：重复条目：com / amazonaws / auth / NoOpSigner.class 
  

当我启用 multiDexEnabled true 时发生错误。

$ b 没有 multiDexEnabled true 错误更改为：

 错误：任务'：app：dexDebug'的执行失败。 
> com.android.ide.common.process.ProcessException：org.gradle.process.internal.ExecException：进程'命令'C：\程序文件\Java\jdk1.7.0_79\bin\java.exe' '完成非零退出值2 
  

这是我的gradle文件：

 'apply plugin：'com.android.application''
 
 
 android {
 compileSdkVersion 23 
 buildToolsVersion23.0.1
 
 dexOptions {
 preDexLibraries = true 
 
} 
 
 defaultConfig {
 applicationIdcom.example.chris.camerayoutube
 minSdkVersion 15 
 targetSdkVersion 23 
 versionCode 1 
 versionName1.0
 multiDexEnabled true 
 
 } 
 buildTypes {
 release {
 minifyEnabled false 
 proguardFiles getDefaultProguardFile（'proguard-android.txt'），'proguard-rules.pro'
} 
} 
} 
 
依赖关系{
 testCompile'juni t：junit：4.12'
 
 
 compile'c​​om.android.support:multidex:1.0.1'
 compile'c​​om.android.support:support-v4:+' 
 compile'c​​om.android.support:design:23.1.1'
 
 compile'c​​om.amazonaws：aws-android-sdk-s3：2. +'
 compile' com.amazonaws：aws-android-sdk-sqs：2. +'
 compile'c​​om.amazonaws：aws-android-sdk-core：2. +'
 compile'c​​om.amazonaws：aws- android-sdk-cognito：2. +'
 compile'c​​om.amazonaws：aws-java-sdk-core：1.10.52'
 
} 
  com.amazonaws：aws->     java-sdk-core：1.10.52 需要附加的库，因为对于android来说，从amazon github源文件中找到的是针对android独立库的文件。检查这个链接 
 
 
 
对于android来说，需要 com.amazonaws：aws-android-sdk-core：2.2.12 这已经是儿童图书馆 com.amazonaws：aws-android-sdk-cognito：2。+ ， com.amazonaws：aws-android-sdk-sqs： 2。+ 您已经连接。
 
 
 
 如何检查依赖关系/层次结构？
 
 
 
执行以下命令： gradlew app：dependencies  
 
 
 
  
 
 
  _releaseApk  -  ##内部使用，请勿手动配置## 
 + --- com.android .support：support-v4：+  - > 23.1.1 
 | \ --- com.android.support:support-annotations:23.1.1 
 + --- com.android.support:design:23.1.1 
 | + --- com.android.support:appcompat-v7:23.1.1 
 | | \ --- com.android.support:support-v4:23.1.1（*）
 | + --- com.android.support:recyclerview-v7:23.1.1 
 | | + --- com.android.support:support-annotations:23.1.1 
 | | \ --- com.android.support:support-v4:23.1.1（*）
 | \ --- com.android.support:support-v4:23.1.1（*）
 + --- com.android.support:multidex:1.0.1 
 + --- com。 amazonaws：aws-android-sdk-s3：2. +  - > 2.2.12 
 | \ --- com.amazonaws：aws-android-sdk-core：2.2.12 
 | \ --- com.google.code.gson：gson：2.2.4 
 + --- com.amazonaws：aws-android-sdk-core：2. +  - > 2.2.12（*）
 + --- com.amazonaws：aws-android-sdk-sqs：2. +  - > 2.2.12 
 | \ --- com.amazonaws：aws-android-sdk-core：2.2.12（*）
 \ --- com.amazonaws：aws-android-sdk-cognito：2. +  - > 2.2.12 
 \ --- com.amazonaws：aws-android-sdk-core：2.2.12（*）
  
标记为（*）的重复子库。你可以删除，如果你也是外部连接的（比如你的gradle  support-v4 你已经连接了它已经在设计库中，并且和 aws- android-sdk-core ）。
 
 
  AFAIK  com.amazonaws：aws-java-sdk-core：1.10。 52 将不需要用于android-sdk。 
让我知道如果删除 java-sdk-core  
 
 
 
核心& Java核心有相同的类，这就是为什么它给出错误的重复条目
 
 
删除 com.amazonaws：aws-java-sdk-core：1.10 .52 你也可以删除multidex选项，因为它不需要（方法数变得小于65k）
 
 
 
让我知道是否有任何问题。
 
I am trying to use Amazon AWS services with my project. I have added in the dependencies; the project builds fine.
When I run the application on my phone I get this error:
    Error:Execution failed for task ':app:packageAllDebugClassesForMultiDex'.
> java.util.zip.ZipException: duplicate entry: com/amazonaws/auth/NoOpSigner.class
This error occurred when I enabled multiDexEnabled true.

Without the multiDexEnabled true the error changes to:
Error:Execution failed for task ':app:dexDebug'.
> com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.7.0_79\bin\java.exe'' finished with non-zero exit value 2
Here is my gradle file:
'apply plugin: 'com.android.application''


android {
compileSdkVersion 23
buildToolsVersion "23.0.1"

dexOptions{
    preDexLibraries = true

}

defaultConfig {
    applicationId "com.example.chris.camerayoutube"
    minSdkVersion 15
    targetSdkVersion 23
    versionCode 1
    versionName "1.0"
   multiDexEnabled true

}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
}

dependencies {
    testCompile 'junit:junit:4.12'


compile 'com.android.support:multidex:1.0.1'
compile 'com.android.support:support-v4:+'
compile 'com.android.support:design:23.1.1'

compile 'com.amazonaws:aws-android-sdk-s3:2.+'
compile 'com.amazonaws:aws-android-sdk-sqs:2.+'
compile 'com.amazonaws:aws-android-sdk-core:2.+'
compile 'com.amazonaws:aws-android-sdk-cognito:2.+'
compile 'com.amazonaws:aws-java-sdk-core:1.10.52' 

}

解决方案
For android AWS sdk AFAIK it wont required com.amazonaws:aws-java-sdk-core:1.10.52 library to be attached because for android from the amazon github source what i found is for android seperate libraries are availble.check this link 

For android this one is needed com.amazonaws:aws-android-sdk-core:2.2.12 which is already child library of com.amazonaws:aws-android-sdk-cognito:2.+ , com.amazonaws:aws-android-sdk-sqs:2.+ which you have already attached.

How to check Dependency/hierarchy ?

execute this command : gradlew app:dependencies

You will have output like below
_releaseApk - ## Internal use, do not manually configure ##
+--- com.android.support:support-v4:+ -> 23.1.1
|    \--- com.android.support:support-annotations:23.1.1
+--- com.android.support:design:23.1.1
|    +--- com.android.support:appcompat-v7:23.1.1
|    |    \--- com.android.support:support-v4:23.1.1 (*)
|    +--- com.android.support:recyclerview-v7:23.1.1
|    |    +--- com.android.support:support-annotations:23.1.1
|    |    \--- com.android.support:support-v4:23.1.1 (*)
|    \--- com.android.support:support-v4:23.1.1 (*)
+--- com.android.support:multidex:1.0.1
+--- com.amazonaws:aws-android-sdk-s3:2.+ -> 2.2.12
|    \--- com.amazonaws:aws-android-sdk-core:2.2.12
|         \--- com.google.code.gson:gson:2.2.4
+--- com.amazonaws:aws-android-sdk-core:2.+ -> 2.2.12 (*)
+--- com.amazonaws:aws-android-sdk-sqs:2.+ -> 2.2.12
|    \--- com.amazonaws:aws-android-sdk-core:2.2.12 (*)
\--- com.amazonaws:aws-android-sdk-cognito:2.+ -> 2.2.12
     \--- com.amazonaws:aws-android-sdk-core:2.2.12 (*)
Duplicate child library marked as a (*) . You can remove if you are also attaching externally(like in your gradle support-v4 you have attached which is already in design library and same like aws-android-sdk-core).

AFAIK com.amazonaws:aws-java-sdk-core:1.10.52 won't needed for android-sdk.
Let me know if any class or anything missing after removing java-sdk-core

both android-core & java-core have same class thats why it gives error regarding duplicate entry

By removing com.amazonaws:aws-java-sdk-core:1.10.52 you can also remove multidex option as it wont needed (method count became less thn 65k)

Let me know if anything.

                        
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