AGPBI:{“种类”:“错误”,“文本”:“程序类型已存在:com.google.common.annotations.GwtCompatible”,“来源”:[{}],“工具”:“ D8”}

Mig*_*Slv 6 android android-build build.gradle android-gradle-plugin

对于这种类型的错误,也有类似的帖子,但我无法弄清我的情况是什么。

错误是:

AGPBI:{“种类”:“错误”,“文本”:“程序类型已存在:com.google.common.annotations.GwtCompatible”,“来源”:[{}],“工具”:“ D8”}

:app:transformDexArchiveWithExternalLibsDexMergerForFlavorDevDebug  FAILED
Run Code Online (Sandbox Code Playgroud)

这是运行./gradlew app:dependencies时输出的一部分:

flavorDevDebugAndroidTestCompileClasspath - Resolved configuration for compilation for variant: flavorDevDebugAndroidTest
+--- :cloudtestingscreenshotter_lib:
+--- org.mockito:mockito-android:2.10.0
|    +--- org.mockito:mockito-core:2.10.0
|    |    +--- net.bytebuddy:byte-buddy:1.7.4
|    |    +--- net.bytebuddy:byte-buddy-agent:1.7.4
|    |    \--- org.objenesis:objenesis:2.6
|    \--- net.bytebuddy:byte-buddy-android:1.7.4
|         +--- net.bytebuddy:byte-buddy:1.7.4
|         \--- com.jakewharton.android.repackaged:dalvik-dx:1
|              \--- com.jakewharton.android.repackaged:libcore-dex:2
+--- com.android.support:support-annotations:27.1.1
+--- com.android.support.test.espresso:espresso-core:3.0.2
|    +--- com.android.support.test:runner:1.0.2
|    |    +--- com.android.support:support-annotations:27.1.1
|    |    +--- com.android.support.test:monitor:1.0.2
|    |    |    \--- com.android.support:support-annotations:27.1.1
|    |    +--- junit:junit:4.12
|    |    |    \--- org.hamcrest:hamcrest-core:1.3
|    |    \--- net.sf.kxml:kxml2:2.3.0
|    +--- com.android.support.test.espresso:espresso-idling-resource:3.0.2
|    +--- com.squareup:javawriter:2.1.1
|    +--- javax.inject:javax.inject:1
|    +--- org.hamcrest:hamcrest-library:1.3
|    |    \--- org.hamcrest:hamcrest-core:1.3
|    +--- org.hamcrest:hamcrest-integration:1.3
|    |    \--- org.hamcrest:hamcrest-library:1.3 (*)
|    \--- com.google.code.findbugs:jsr305:2.0.1
+--- com.android.support.test.espresso:espresso-intents:3.0.2
|    +--- com.android.support.test.espresso:espresso-core:3.0.2 (*)
|    \--- com.android.support.test:rules:1.0.2
|         \--- com.android.support.test:runner:1.0.2 (*)
+--- com.android.support.test.espresso:espresso-contrib:3.0.2
|    +--- com.android.support.test.espresso:espresso-core:3.0.2 (*)
|    +--- com.android.support.test.espresso:espresso-idling-resource:3.0.2
|    +--- com.android.support:design:27.1.1
|    |    +--- com.android.support:support-v4:27.1.1
|    |    |    +--- com.android.support:support-compat:27.1.1
|    |    |    |    +--- com.android.support:support-annotations:27.1.1
|    |    |    |    \--- android.arch.lifecycle:runtime:1.1.0
|    |    |    |         +--- android.arch.lifecycle:common:1.1.0
|    |    |    |         |    \--- com.android.support:support-annotations:26.1.0 -> 27.1.1
|    |    |    |         +--- android.arch.core:common:1.1.0
|    |    |    |         |    \--- com.android.support:support-annotations:26.1.0 -> 27.1.1
|    |    |    |         \--- com.android.support:support-annotations:26.1.0 -> 27.1.1
|    |    |    +--- com.android.support:support-media-compat:27.1.1
|    |    |    |    +--- com.android.support:support-annotations:27.1.1
|    |    |    |    \--- com.android.support:support-compat:27.1.1 (*)
|    |    |    +--- com.android.support:support-core-utils:27.1.1
|    |    |    |    +--- com.android.support:support-annotations:27.1.1
|    |    |    |    \--- com.android.support:support-compat:27.1.1 (*)
|    |    |    +--- com.android.support:support-core-ui:27.1.1
|    |    |    |    +--- com.android.support:support-annotations:27.1.1
|    |    |    |    +--- com.android.support:support-compat:27.1.1 (*)
|    |    |    |    \--- com.android.support:support-core-utils:27.1.1 (*)
|    |    |    \--- com.android.support:support-fragment:27.1.1
|    |    |         +--- com.android.support:support-compat:27.1.1 (*)
|    |    |         +--- com.android.support:support-core-ui:27.1.1 (*)
|    |    |         +--- com.android.support:support-core-utils:27.1.1 (*)
|    |    |         +--- com.android.support:support-annotations:27.1.1
|    |    |         +--- android.arch.lifecycle:livedata-core:1.1.0
|    |    |         |    +--- android.arch.lifecycle:common:1.1.0 (*)
|    |    |         |    +--- android.arch.core:common:1.1.0 (*)
|    |    |         |    \--- android.arch.core:runtime:1.1.0
|    |    |         |         \--- android.arch.core:common:1.1.0 (*)
|    |    |         \--- android.arch.lifecycle:viewmodel:1.1.0
|    |    +--- com.android.support:appcompat-v7:27.1.1
|    |    |    +--- com.android.support:support-annotations:27.1.1
|    |    |    +--- com.android.support:support-core-utils:27.1.1 (*)
|    |    |    +--- com.android.support:support-fragment:27.1.1 (*)
|    |    |    +--- com.android.support:support-vector-drawable:27.1.1
|    |    |    |    +--- com.android.support:support-annotations:27.1.1
|    |    |    |    \--- com.android.support:support-compat:27.1.1 (*)
|    |    |    \--- com.android.support:animated-vector-drawable:27.1.1
|    |    |         +--- com.android.support:support-vector-drawable:27.1.1 (*)
|    |    |         \--- com.android.support:support-core-ui:27.1.1 (*)
|    |    +--- com.android.support:recyclerview-v7:27.1.1
|    |    |    +--- com.android.support:support-annotations:27.1.1
|    |    |    +--- com.android.support:support-compat:27.1.1 (*)
|    |    |    \--- com.android.support:support-core-ui:27.1.1 (*)
|    |    \--- com.android.support:transition:27.1.1
|    |         +--- com.android.support:support-annotations:27.1.1
|    |         \--- com.android.support:support-compat:27.1.1 (*)
|    +--- com.android.support:recyclerview-v7:27.1.1 (*)
|    +--- com.android.support:support-compat:27.1.1 (*)
|    +--- com.android.support:support-core-utils:27.1.1 (*)
|    \--- com.google.android.apps.common.testing.accessibility.framework:accessibility-test-framework:2.0
|         \--- org.hamcrest:hamcrest-core:1.3
+--- com.sun.mail:android-mail:1.6.0
|    \--- com.sun.mail:android-activation:1.6.0
+--- com.sun.mail:android-activation:1.6.0
+--- com.android.support:multidex-instrumentation:1.0.2
|    \--- com.android.support:multidex:1.0.2 -> 1.0.3
+--- com.google.apis:google-api-services-youtube:v3-rev180-1.22.0
|    \--- com.google.api-client:google-api-client:1.22.0
|         +--- com.google.oauth-client:google-oauth-client:1.22.0
|         |    +--- com.google.http-client:google-http-client:1.22.0
|         |    |    \--- com.google.code.findbugs:jsr305:1.3.9 -> 2.0.1
|         |    \--- com.google.code.findbugs:jsr305:1.3.9 -> 2.0.1
|         +--- com.google.http-client:google-http-client-jackson2:1.22.0
|         |    +--- com.google.http-client:google-http-client:1.22.0 (*)
|         |    \--- com.fasterxml.jackson.core:jackson-core:2.1.3 -> 2.9.0
|         \--- com.google.guava:guava-jdk5:17.0
+--- com.android.support:multidex:1.0.3
+--- com.android.support:support-core-utils:27.1.1 (*)
+--- com.android.support:appcompat-v7:27.1.1 (*)
+--- com.android.support:mediarouter-v7:27.1.1
|    +--- com.android.support:support-media-compat:27.1.1 (*)
|    +--- com.android.support:appcompat-v7:27.1.1 (*)
|    \--- com.android.support:palette-v7:27.1.1
|         +--- com.android.support:support-compat:27.1.1 (*)
|         \--- com.android.support:support-core-utils:27.1.1 (*)
+--- com.android.support:design:27.1.1 (*)
+--- com.android.support:recyclerview-v7:27.1.1 (*)
+--- com.google.android.gms:play-services-auth:15.0.1
|    +--- com.google.android.gms:play-services-auth-api-phone:[15.0.1,16.0.0) -> 15.0.1
|    |    +--- com.google.android.gms:play-services-base:[15.0.1,16.0.0) -> 15.0.1
|    |    |    +--- com.google.android.gms:play-services-basement:[15.0.1] -> 15.0.1
|    |    |    |    \--- com.android.support:support-v4:26.1.0 -> 27.1.1 (*)
|    |    |    \--- com.google.android.gms:play-services-tasks:[15.0.1] -> 15.0.1
|    |    |         \--- com.google.android.gms:play-services-basement:[15.0.1] -> 15.0.1 (*)
|    |    +--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    \--- com.google.android.gms:play-services-tasks:[15.0.1,16.0.0) -> 15.0.1 (*)
|    +--- com.google.android.gms:play-services-auth-base:[15.0.1] -> 15.0.1
|    |    +--- com.google.android.gms:play-services-base:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    +--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    \--- com.google.android.gms:play-services-tasks:[15.0.1,16.0.0) -> 15.0.1 (*)
|    +--- com.google.android.gms:play-services-base:[15.0.1,16.0.0) -> 15.0.1 (*)
|    +--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    \--- com.google.android.gms:play-services-tasks:[15.0.1,16.0.0) -> 15.0.1 (*)
+--- com.google.firebase:firebase-core:15.0.2
|    +--- com.google.firebase:firebase-analytics:[15.0.2,16.0.0) -> 15.0.2
|    |    +--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    +--- com.google.android.gms:play-services-measurement-base:[15.0.2] -> 15.0.2
|    |    +--- com.google.android.gms:play-services-stats:[15.0.1,16.0.0) -> 15.0.1
|    |    |    \--- com.google.android.gms:play-services-basement:[15.0.1] -> 15.0.1 (*)
|    |    +--- com.google.firebase:firebase-analytics-impl:[15.0.2] -> 15.0.2
|    |    |    +--- com.google.android.gms:play-services-ads-identifier:[15.0.1,16.0.0) -> 15.0.1
|    |    |    |    \--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    |    +--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    |    +--- com.google.android.gms:play-services-measurement-base:[15.0.2] -> 15.0.2
|    |    |    +--- com.google.android.gms:play-services-stats:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    |    +--- com.google.android.gms:play-services-tasks:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    |    +--- com.google.firebase:firebase-common:[15.0.1,16.0.0) -> 15.0.1
|    |    |    |    +--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    |    |    \--- com.google.android.gms:play-services-tasks:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    |    \--- com.google.firebase:firebase-iid:[15.1.0,16.0.0) -> 15.1.0
|    |    |         +--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    |         +--- com.google.android.gms:play-services-stats:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    |         +--- com.google.android.gms:play-services-tasks:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    |         +--- com.google.firebase:firebase-common:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    |         \--- com.google.firebase:firebase-iid-interop:[15.0.0,16.0.0) -> 15.0.0
|    |    |              +--- com.google.android.gms:play-services-base:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    |              \--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    \--- com.google.firebase:firebase-common:[15.0.1,16.0.0) -> 15.0.1 (*)
|    \--- com.google.firebase:firebase-measurement-connector-impl:[15.0.0,16.0.0) -> 15.0.0
|         +--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|         +--- com.google.android.gms:play-services-measurement-base:[15.0.2] -> 15.0.2
|         +--- com.google.firebase:firebase-analytics:[15.0.2] -> 15.0.2 (*)
|         +--- com.google.firebase:firebase-analytics-impl:[15.0.2] -> 15.0.2 (*)
|         +--- com.google.firebase:firebase-common:[15.0.1,16.0.0) -> 15.0.1 (*)
|         \--- com.google.firebase:firebase-measurement-connector:[15.0.0,16.0.0) -> 15.0.0
|              \--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
+--- com.google.firebase:firebase-messaging:15.0.2
|    +--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    +--- com.google.android.gms:play-services-tasks:[15.0.1,16.0.0) -> 15.0.1 (*)
|    +--- com.google.firebase:firebase-common:[15.0.1,16.0.0) -> 15.0.1 (*)
|    +--- com.google.firebase:firebase-core:[15.0.2,16.0.0) -> 15.0.2 (*)
|    +--- com.google.firebase:firebase-iid:[15.1.0] -> 15.1.0 (*)
|    \--- com.google.firebase:firebase-measurement-connector:[15.0.0,16.0.0) -> 15.0.0 (*)
+--- com.google.firebase:firebase-database:15.0.1
|    +--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    +--- com.google.android.gms:play-services-tasks:[15.0.1,16.0.0) -> 15.0.1 (*)
|    +--- com.google.firebase:firebase-common:[15.0.1,16.0.0) -> 15.0.1 (*)
|    +--- com.google.firebase:firebase-database-collection:[15.0.1,16.0.0) -> 15.0.1
|    |    \--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    \--- com.google.firebase:firebase-database-connection:[15.0.1] -> 15.0.1
|         +--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|         +--- com.google.firebase:firebase-analytics:[15.0.1,16.0.0) -> 15.0.2 (*)
|         \--- com.google.firebase:firebase-common:[15.0.1,16.0.0) -> 15.0.1 (*)
+--- com.google.firebase:firebase-appindexing:15.0.1
|    +--- com.google.android.gms:play-services-base:[15.0.1,16.0.0) -> 15.0.1 (*)
|    +--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    +--- com.google.android.gms:play-services-tasks:[15.0.1,16.0.0) -> 15.0.1 (*)
|    \--- com.google.firebase:firebase-common:[15.0.1,16.0.0) -> 15.0.1 (*)
+--- com.google.firebase:firebase-crash:15.0.2
|    +--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    +--- com.google.android.gms:play-services-flags:[15.0.1,16.0.0) -> 15.0.1
|    |    +--- com.google.android.gms:play-services-base:[15.0.1] -> 15.0.1 (*)
|    |    \--- com.google.android.gms:play-services-basement:[15.0.1] -> 15.0.1 (*)
|    +--- com.google.android.gms:play-services-measurement-base:[15.0.2] -> 15.0.2
|    +--- com.google.firebase:firebase-analytics-impl:[15.0.2] -> 15.0.2 (*)
|    +--- com.google.firebase:firebase-common:[15.0.1,16.0.0) -> 15.0.1 (*)
|    \--- com.google.firebase:firebase-iid:[15.1.0,16.0.0) -> 15.1.0 (*)
+--- com.google.firebase:firebase-auth:15.1.0
|    +--- com.google.android.gms:play-services-base:[15.0.1,16.0.0) -> 15.0.1 (*)
|    +--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    +--- com.google.android.gms:play-services-flags:[15.0.1,16.0.0) -> 15.0.1 (*)
|    +--- com.google.android.gms:play-services-tasks:[15.0.1,16.0.0) -> 15.0.1 (*)
|    +--- com.google.firebase:firebase-analytics:[15.0.1,16.0.0) -> 15.0.2 (*)
|    +--- com.google.firebase:firebase-auth-interop:[15.0.2,16.0.0) -> 15.0.2
|    |    +--- com.google.android.gms:play-services-base:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    +--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    +--- com.google.android.gms:play-services-tasks:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    \--- com.google.firebase:firebase-common:[15.0.1,16.0.0) -> 15.0.1 (*)
|    \--- com.google.firebase:firebase-common:[15.0.1,16.0.0) -> 15.0.1 (*)
+--- com.google.firebase:firebase-invites:15.0.1
|    +--- com.google.android.gms:play-services-appinvite:[15.0.1,16.0.0) -> 15.0.2
|    |    +--- com.google.android.gms:play-services-base:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    +--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    +--- com.google.android.gms:play-services-measurement-base:[15.0.2] -> 15.0.2
|    |    +--- com.google.android.gms:play-services-tasks:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    \--- com.google.firebase:firebase-dynamic-links:[15.0.2] -> 15.0.2
|    |         +--- com.google.android.gms:play-services-base:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |         +--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |         +--- com.google.android.gms:play-services-measurement-base:[15.0.2] -> 15.0.2
|    |         +--- com.google.android.gms:play-services-tasks:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |         +--- com.google.firebase:firebase-analytics-impl:[15.0.2] -> 15.0.2 (*)
|    |         \--- com.google.firebase:firebase-common:[15.0.1,16.0.0) -> 15.0.1 (*)
|    \--- com.google.firebase:firebase-analytics:[15.0.1,16.0.0) -> 15.0.2 (*)
+--- com.google.firebase:firebase-config:15.0.2
|    +--- com.google.android.gms:play-services-base:[15.0.1,16.0.0) -> 15.0.1 (*)
|    +--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    +--- com.google.android.gms:play-services-phenotype:[15.0.1,16.0.0) -> 15.0.1
|    |    +--- com.google.android.gms:play-services-base:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    +--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    \--- com.google.android.gms:play-services-tasks:[15.0.1,16.0.0) -> 15.0.1 (*)
|    +--- com.google.android.gms:play-services-tasks:[15.0.1,16.0.0) -> 15.0.1 (*)
|    +--- com.google.firebase:firebase-abt:[15.0.1,16.0.0) -> 15.0.1
|    |    +--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    +--- com.google.firebase:firebase-analytics-impl:[15.0.1,16.0.0) -> 15.0.2 (*)
|    |    \--- com.google.firebase:firebase-common:[15.0.1,16.0.0) -> 15.0.1 (*)
|    +--- com.google.firebase:firebase-analytics-impl:[15.0.1,16.0.0) -> 15.0.2 (*)
|    +--- com.google.firebase:firebase-common:[15.0.1,16.0.0) -> 15.0.1 (*)
|    \--- com.google.firebase:firebase-iid:[15.0.1,16.0.0) -> 15.1.0 (*)
+--- com.google.firebase:firebase-ads:15.0.1
|    +--- com.google.android.gms:play-services-ads:[15.0.1,16.0.0) -> 15.0.1
|    |    +--- com.android.support:customtabs:26.1.0 -> 27.1.1
|    |    |    +--- com.android.support:support-compat:27.1.1 (*)
|    |    |    +--- com.android.support:support-annotations:27.1.1
|    |    |    \--- com.android.support:support-core-ui:27.1.1 (*)
|    |    +--- com.google.android.gms:play-services-ads-base:[15.0.1] -> 15.0.1
|    |    +--- com.google.android.gms:play-services-ads-identifier:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    +--- com.google.android.gms:play-services-ads-lite:[15.0.1] -> 15.0.1
|    |    |    +--- com.google.android.gms:play-services-ads-base:[15.0.1] -> 15.0.1
|    |    |    \--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    +--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    |    \--- com.google.android.gms:play-services-gass:[15.0.1] -> 15.0.1
|    |         +--- com.google.android.gms:play-services-ads-base:[15.0.1] -> 15.0.1
|    |         \--- com.google.android.gms:play-services-basement:[15.0.1,16.0.0) -> 15.0.1 (*)
|    \--- com.google.firebase:firebase-analytics:[15.0.1,16.0.0) -> 15.0.2 (*)
+--- com.google.firebase:firebase-firestore:16.0.0
|    +--- com.squareup.okhttp:okhttp:2.7.2
|    |    \--- com.squareup.okio:okio:1.6.0
|    +--- io.grpc:grpc-okhttp:1.8.0
|    |    +--- io.grpc:grpc-core:[1.8.0] -> 1.8.0
|    |    |    +--- io.grpc:grpc-context:1.8.0
|    |    |    +--- com.google.guava:guava:19.0
|    |    |    +--- com.google.errorprone:error_prone_annotations:2.0.19
|    |    |    +--- com.google.code.findbugs:jsr305:3.0.0 -> 2.0.1
|    |    |    +--- com.google.instrumentation:instrumentation-api:0.4.3
|    |    |    |    +--- com.google.code.findbugs:jsr305:3.0.0 -> 2.0.1
|    |    |    |    \--- com.google.guava:guava:19.0
|    |    |    +--- io.opencensus:opencensus-api:0.8.0
|    |    |    |    +--- com.google.errorprone:error_prone_annotations:2.0.19
|    |    |    |    \--- com.google.guava:guava:19.0
|    |    |    \--- io.opencensus:opencensus-contrib-grpc-metrics:0.8.0
|    |    |         +--- com.google.errorpron

Mig*_*Slv 4

通过旧的痛苦方法来检测任何类型的冲突,我一次删除一个依赖项,最后发现冲突涉及 google api 客户端。

我应用的解决方案与com.google.common.annotations.Beta重复项相同,即从 api 实现中排除 guava。