在 APK com/google/cloud/project.properties 中复制的 Google Cloud API 重复文件答案

【问题标题】：Google Cloud API Duplicate file copied in APK com/google/cloud/project.properties在 APK com/google/cloud/project.properties 中复制的 Google Cloud API 重复文件
【发布时间】：2017-09-21 19:51:40
【问题描述】：

这是我的 build.gradle(app) 文件，当我尝试同步此文件时，会显示 8 个警告，当我尝试运行此应用程序时，几乎没有警告和错误提示有 Duplicate file Exception。

我正在尝试在我的 android 应用程序中实现 Google 云数据存储

apply plugin: 'com.android.application'

android {
    compileSdkVersion 25
    buildToolsVersion "25.0.2"
    defaultConfig {
        applicationId "com.appspot.myapp"
        minSdkVersion 15
        targetSdkVersion 25
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    configurations.all {
        resolutionStrategy.force 'com.google.code.findbugs:jsr305:1.3.9'
    }
    packagingOptions {

        exclude 'META-INF/DEPENDENCIES.txt'
        exclude 'META-INF/LICENSE.txt'
        exclude 'META-INF/NOTICE.txt'
        exclude 'META-INF/NOTICE'
        exclude 'META-INF/LICENSE'
        exclude 'META-INF/DEPENDENCIES'
        exclude 'META-INF/notice.txt'
        exclude 'META-INF/license.txt'
        exclude 'META-INF/dependencies.txt'
        exclude 'META-INF/LGPL2.1'

    }
}


dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:25.3.1'
    compile 'com.android.support:design:25.3.1'
    testCompile 'junit:junit:4.12'
    compile group: 'com.google.cloud', name: 'google-cloud-datastore', version: '+'
}

点击立即同步后，我收到以下警告：

Information:Gradle tasks [:app:generateDebugSources, :app:generateDebugAndroidTestSources, :app:mockableAndroidJar, :app:prepareDebugUnitTestDependencies]
Warning:WARNING: Dependency org.json:json:20160810 is ignored for debug as it may be conflicting with the internal version provided by Android.
Warning:WARNING: Dependency org.apache.httpcomponents:httpclient:4.0.1 is ignored for debug as it may be conflicting with the internal version provided by Android.
Warning:WARNING: Dependency org.json:json:20160810 is ignored for debug as it may be conflicting with the internal version provided by Android.
Warning:WARNING: Dependency org.apache.httpcomponents:httpclient:4.0.1 is ignored for debug as it may be conflicting with the internal version provided by Android.
Warning:WARNING: Dependency org.json:json:20160810 is ignored for release as it may be conflicting with the internal version provided by Android.
Warning:WARNING: Dependency org.apache.httpcomponents:httpclient:4.0.1 is ignored for release as it may be conflicting with the internal version provided by Android.
Warning:WARNING: Dependency org.json:json:20160810 is ignored for release as it may be conflicting with the internal version provided by Android.
Warning:WARNING: Dependency org.apache.httpcomponents:httpclient:4.0.1 is ignored for release as it may be conflicting with the internal version provided by Android.
Information:BUILD SUCCESSFUL
Information:Total time: 1.791 secs
Information:0 errors
Information:8 warnings
Information:See complete output in console

这是我在尝试运行应用程序时看到的错误：

Information:Gradle tasks [:app:assembleDebug]
Warning:WARNING: Dependency org.json:json:20160810 is ignored for debug as it may be conflicting with the internal version provided by Android.
Warning:WARNING: Dependency org.apache.httpcomponents:httpclient:4.0.1 is ignored for debug as it may be conflicting with the internal version provided by Android.
Warning:WARNING: Dependency org.json:json:20160810 is ignored for debug as it may be conflicting with the internal version provided by Android.
Warning:WARNING: Dependency org.apache.httpcomponents:httpclient:4.0.1 is ignored for debug as it may be conflicting with the internal version provided by Android.
Error:Execution failed for task ':app:transformResourcesWithMergeJavaResForDebug'.
> com.android.build.api.transform.TransformException: com.android.builder.packaging.DuplicateFileException: Duplicate files copied in APK com/google/cloud/project.properties
    File1: C:\Users\mbhar\.gradle\caches\modules-2\files-2.1\com.google.cloud\google-cloud-core\1.0.0-rc2\aadb514fb6e48585c5fb1b2bbca1a84db38bdd6f\google-cloud-core-1.0.0-rc2.jar
    File2: C:\Users\mbhar\.gradle\caches\modules-2\files-2.1\com.google.cloud\google-cloud-core-http\1.0.0-rc2\fe5de264bf8a3357d69f0643d31eca582cee119c\google-cloud-core-http-1.0.0-rc2.jar
Information:BUILD FAILED
Information:Total time: 1.487 secs
Information:1 error
Information:4 warnings
Information:See complete output in console

【问题讨论】：

云端点是你想要的依赖，对吧？不是整个数据存储区 API？
实际上我想使用以下导入：import java.util.ArrayList; 并想要这3个依赖项：google-cloud-coregoogle-cloud-core-httpgoogle-cloud-datastore
同样，端点是您应该与数据存储 API 交互的方式。我认为您的依赖项是 Java 服务器，而不是 Android 应用程序。
好的。那么，如何使用 Cloud 端点与我的 Android 应用程序进行交互。我想访问我的数据存储中已经存在的数据。我的 Datastore 中的数据来自 Web 应用程序。抱歉，我是 Android 新手。

标签： android android-gradle-plugin google-cloud-datastore google-cloud-platform google-cloud-endpoints

【解决方案1】：

排除这些重复项应该可以消除该错误

compile('com.google.cloud:google-cloud-datastore:1.0.0-rc2') {
    exclude group: 'org.json'
    exclude group: 'org.apache.httpcomponents'
}

但是自 Android 6 起，Android 已弃用 SDK 中的 Apache HTTP 组件。

所以，我真的认为你应该setup Endpoints，因为

Google Cloud Endpoints [提供] 自动化 Java 对象编组/解组为 JSON、生成可从您的 Android 应用调用的强类型客户端库、内置身份验证支持等。

我认为该链接部署了 Java 后端，但我已将其与 Python App Engine 应用程序一起使用，只是不记得它是如何工作的。

【讨论】：