Kotlin、Java、multidex、Dagger 2、Butterknife 和 Realm：transformClassesWithJarMergingForDebug：重复条目：org/je
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【中文标题】Kotlin、Java、multidex、Dagger 2、Butterknife 和 Realm：transformClassesWithJarMergingForDebug：重复条目：org/jetbrains/annotations/NotNull.class【英文标题】：Kotlin,Java,multidex,Dagger 2,Butterknife and Realm: transformClassesWithJarMergingForDebug: duplicate entry: org/jetbrains/annotations/NotNull.class 【发布时间】：2017-02-01 07:02:30 【问题描述】：我们有现有的 Java android 代码。我们想轻松地慢慢开始迁移到 Kotlin。我们使用 Dagger 2、Butterknife 和 Realm。我们使用 Java 8 编译器（但我们的 targetCompatibility 和 sourceCompatibility 是 1.7）。
我已经在网上漫游了几个小时，看到了 SO、GitHub 对话等，并设法解决了除一个以外的所有问题：
构建成功，但是在尝试调试时，我们得到：
Error:Execution failed for task ':app:transformClassesWithJarMergingForDebug'.
> com.android.build.api.transform.TransformException: java.util.zip.ZipException: duplicate entry: org/jetbrains/annotations/NotNull.class
有没有办法解决 Gradle 中的重复条目（可能使用 packagingOptions 或 resolutionStrategy？因为它是来自插件的重复项...？）？
再次 - build project 没有任何错误，只有 transformClassesWithJarMergingForDebug 失败！
这是应用程序的 gradle：
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
//apply plugin: 'com.neenbedankt.android-apt'
apply plugin: 'realm-android'
kapt generateStubs = true
android
signingConfigs
config
keyAlias 'MyAndroidKey'
keyPassword 'password'
storeFile file('android.jks')
storePassword 'password'
compileSdkVersion 23
buildToolsVersion '23.0.3'
defaultConfig
vectorDrawables.useSupportLibrary = true
applicationId "com.acme.app"
minSdkVersion 15
targetSdkVersion 23
versionCode 1
versionName "1.0"
//testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
testInstrumentationRunner "com.acme.app.utils.CustomAndroidJUnitRunner"
// http://***.com/a/26515860/587467:
multiDexEnabled true
//dexOptions incremental false
buildTypes
release
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
signingConfig signingConfigs.config
packagingOptions
exclude 'META-INF/services/javax.annotation.processing.Processor'
exclude 'META-INF/DEPENDENCIES.txt'
exclude 'META-INF/DEPENDENCIES'
exclude 'META-INF/dependencies.txt'
exclude 'META-INF/LICENSE.txt'
exclude 'META-INF/LICENSE'
exclude 'META-INF/license.txt'
exclude 'META-INF/LGPL2.1'
exclude 'META-INF/NOTICE.txt'
exclude 'META-INF/NOTICE'
exclude 'META-INF/notice.txt'
configurations.all
resolutionStrategy.force 'com.android.support:support-annotations:23.3.0', 'junit:junit:4.12'
targetCompatibility = 1.7
sourceCompatibility = 1.7
compileOptions
sourceCompatibility JavaVersion.VERSION_1_7
targetCompatibility JavaVersion.VERSION_1_7
sourceSets main.java.srcDirs += 'src/main/kotlin'
dependencies
// http://***.com/a/26515860/587467:
compile 'com.android.support:multidex:1.0.1'
compile fileTree(include: ['*.jar'], dir: 'libs')
/// <Firebase> Cloud Messaging (FCM) - the Google Cloud Messaging (GCM) new version:
compile 'com.google.firebase:firebase-messaging:9.0.2'
/// </Firebase>
/// <Dagger>
//provided 'javax.annotation:jsr250-api:1.0'
//apt 'com.google.dagger:dagger-compiler:2.5'
//compile 'com.google.dagger:dagger:2.5'
//compile 'com.google.dagger:dagger-compiler:2.4'
/// </Dagger>
/// <KotlinDagger>
compile 'com.google.dagger:dagger:2.5'
kapt 'com.google.dagger:dagger-compiler:2.5'
kaptTest 'com.google.dagger:dagger-compiler:2.5'
kaptAndroidTest 'com.google.dagger:dagger-compiler:2.5'
//provided 'org.glassfish:javax.annotation:10.0-b28'
/// </KotlinDagger>
/// <JSON>
//testCompile 'javax.json:javax.json-api:1.0'
testCompile 'org.glassfish:javax.json:1.0.4'
// https://github.com/FasterXML/jackson-docs/wiki/Using-Jackson2-with-Maven
// http://www.mkyong.com/java/jackson-2-convert-java-object-to-from-json/
//testCompile 'com.fasterxml.jackson.core:jackson-core:2.6.3'
testCompile 'com.fasterxml.jackson.core:jackson-databind:2.7.4'
/// </JSON>
//apt 'com.jakewharton:butterknife-compiler:8.0.1'
kapt 'com.jakewharton:butterknife-compiler:8.0.1'
testCompile 'junit:junit:4.12'
testCompile 'org.mockito:mockito-core:1.10.19'
testCompile 'net.java.dev.jna:jna-platform:4.2.2'
// <InstrumentedTests>
// <MutualExclusive>
// <Or>
//androidTestCompile 'com.android.support.test:testing-support-lib:0.1'
// </Or>
// <Or>
// androidTestCompile 'com.android.support:support-annotations:23.0.0'
androidTestCompile 'com.android.support.test:runner:0.4'
//androidTestCompile 'com.android.support.test:rules:0.4'
// <Espresso>
androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.2'
// </Espresso>
//androidTestCompile "org.robolectric:robolectric:3.0"
// </Or>
// </MutualExclusive>
// </InstrumentedTests>
compile 'com.android.support:appcompat-v7:23.4.0'
compile 'com.android.support:support-v13:23.4.0'
compile 'com.android.support:design:23.4.0'
compile 'com.jakewharton:butterknife:8.0.1'
compile 'com.google.code.ksoap2-android:ksoap2-android:3.6.1'
compile 'org.springframework.android:spring-android-rest-template:2.0.0.M3'
compile 'com.squareup.retrofit2:retrofit:2.1.0'
compile 'com.squareup.retrofit2:converter-gson:2.1.0'
compile 'com.squareup.retrofit2:adapter-rxjava:2.1.0'
compile 'com.android.support:support-v4:23.3.0'
compile 'com.android.support:recyclerview-v7:23.3.0'
compile 'com.android.support:cardview-v7:23.3.0'
compile 'io.reactivex:rxandroid:1.2.1'
compile 'joda-time:joda-time:2.9.4'
//compile 'io.reactivex:rxjava:1.1.6'
compile 'io.reactivex:rxjava-async-util:0.21.0'
//<Floating Buttons>
compile 'com.github.clans:fab:1.6.4'
//</Floating Buttons>
compile 'com.facebook.fresco:fresco:0.11.0'
compile 'org.jetbrains:annotations-java5:15.0'
compile 'com.fasterxml.jackson.core:jackson-databind:2.7.4'
compile 'com.google.code.gson:gson:2.4'
compile 'javax.annotation:javax.annotation-api:1.2'
compile "org.jetbrains.kotlin:kotlin-stdlib:1.0.3"
// https://firebase.google.com/docs/android/setup#add_the_sdk
// Firebase Cloud Messaging (FCM) - the Google Cloud Messaging (GCM) new version:
apply plugin: 'com.google.gms.google-services'
repositories
mavenCentral()
【问题讨论】：
【参考方案1】：尝试删除：compile 'org.jetbrains:annotations-java5:15.0'。如果它不起作用，请按照以下步骤操作：
转到您的 app/build.gradle 文件并添加：
configurations
cleanedAnnotations
compile.exclude group: 'org.jetbrains' , module:'annotations'
改变
compile 'org.jetbrains:annotations-java5:15.0'
与
compile files("$buildDir/libs/annotations-cleaned.jar") builtBy 'cleanAnnotationsJar'
cleanedAnnotations 'org.jetbrains:nnotations-java5:15.0'
最后补充：
task cleanAnnotationsJar(type:Jar)
configurations.cleanedAnnotations.each f ->
from zipTree(f)
archiveName = "annotations-cleaned.jar"
exclude 'org/jetbrains/annotations/NotNull.class'
exclude 'org/jetbrains/annotations/Nullable.class'
检查：https://discuss.kotlinlang.org/t/duplicate-classes-in-kotlin-runtime-and-com-intellij-annotations/154/3
【讨论】：
谢谢，成功了！但我似乎很难理解 Gradle 调整：如果你能用简单的语言解释第二个解决方案的作用，我们将不胜感激！ 第二种解决方案取自下面的链接。它执行Gradle 任务以查看Nullable.class 或NotNull.class 或是否加倍。如果是，则仅从 cleanAnnotations 依赖项中获取。
如果有效，请将其标记为其他有类似问题的答案。很高兴我能帮上忙【参考方案2】：
我将compile ("org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version") 更改为compile ("org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version")
exclude group: 'org.jetbrains', module: 'annotations'
，有效。试试看！
【讨论】：
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