重复类 MultiDex$V14.class

Posted 2023-04-15

【中文标题】重复类 MultiDex$V14.class

【英文标题】：Duplicate class MultiDex$V14.class

【发布时间】：2016-08-25 20:36:34

【问题描述】：

我的 android gradle 构建在 ProGuard 阶段失败，MultiDex$V14.class 出现重复类错误（见下文）。我了解什么是重复类，我知道 MultiDex 是什么，但我仍然不明白它是如何重复的。

问题：

当然，我看到 multidex.jar 中有一个定义。我如何知道另一个是在哪里定义的？ ProGuard 不应该删除重复条目而不是抱怨它们吗？ 底部的“出了什么问题”描述似乎与重复的类无关。是吗？

-

    (http://proguard.sourceforge.net/manual/troubleshooting.html#duplicateclass)
Warning: can't write resource [.gitkeep] (Duplicate zip entry [DMMPlaybackBitrateSwitching-1.0.jar:.gitkeep])
...
Warning: can't write resource [.gitkeep] (Duplicate zip entry [DMMDigitalMusicLocatorServiceClient-1.0.jar:.gitkeep])
Exception while processing task 
java.io.IOException: Can't write [/Users/fruitman/dev/MusicAndroid-one/build/DigitalMusicAndroidAppOne/DigitalMusicAndroidAppOne-11.0/RHEL5_64/DEV.STD.PTHREAD/build/private/android-gradle/intermediates/classes-proguard/fourfireOS/debug/classes.jar] (Can't read [/Users/fruitman/dev/MusicAndroid-one/build/DigitalMusicAndroidAppOne/DigitalMusicAndroidAppOne-11.0/RHEL5_64/DEV.STD.PTHREAD/build/private/tmp/artifacts/multidex.jar(;;;;;;!META-INF/MANIFEST.MF)] (Duplicate zip entry [multidex.jar:android/support/multidex/MultiDex$V14.class]))
    at proguard.OutputWriter.writeOutput(OutputWriter.java:187)
    at proguard.OutputWriter.execute(OutputWriter.java:79)
    at proguard.ProGuard.writeOutput(ProGuard.java:427)
    at proguard.ProGuard.execute(ProGuard.java:175)
    at proguard.gradle.ProGuardTask.proguard(ProGuardTask.java:1074)
    at com.android.build.gradle.tasks.AndroidProGuardTask.doMinification(AndroidProGuardTask.java:139)
    at com.android.build.gradle.tasks.AndroidProGuardTask$1.run(AndroidProGuardTask.java:115)
    at com.android.builder.tasks.Job.runTask(Job.java:48)
    at com.android.build.gradle.tasks.SimpleWorkQueue$EmptyThreadContext.runTask(SimpleWorkQueue.java:41)
    at com.android.builder.tasks.WorkQueue.run(WorkQueue.java:227)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.IOException: Cannot read [/Users/fruitman/dev/MusicAndroid-one/build/DigitalMusicAndroidAppOne/DigitalMusicAndroidAppOne-11.0/RHEL5_64/DEV.STD.PTHREAD/build/private/tmp/artifacts/multidex.jar(;;;;;;!META-INF/MANIFEST.MF)] (Duplicate zip entry [multidex.jar:android/support/multidex/MultiDex$V14.class])
    at proguard.InputReader.readInput(InputReader.java:188)
    at proguard.InputReader.readInput(InputReader.java:158)
    at proguard.OutputWriter.writeOutput(OutputWriter.java:176)
    ... 10 more
Caused by: java.io.IOException: Duplicate zip entry [multidex.jar:android/support/multidex/MultiDex$V14.class]
    at proguard.io.JarWriter.getOutputStream(JarWriter.java:138)
    at proguard.io.FilteredDataEntryWriter.getOutputStream(FilteredDataEntryWriter.java:105)
    at proguard.io.FilteredDataEntryWriter.getOutputStream(FilteredDataEntryWriter.java:105)
    at proguard.io.FilteredDataEntryWriter.getOutputStream(FilteredDataEntryWriter.java:92)
    at proguard.io.ClassRewriter.read(ClassRewriter.java:68)
    at proguard.io.FilteredDataEntryReader.read(FilteredDataEntryReader.java:87)
    at proguard.io.FilteredDataEntryReader.read(FilteredDataEntryReader.java:87)
    at proguard.io.FilteredDataEntryReader.read(FilteredDataEntryReader.java:87)
    at proguard.io.JarReader.read(JarReader.java:65)
    at proguard.io.DirectoryPump.readFiles(DirectoryPump.java:65)
    at proguard.io.DirectoryPump.pumpDataEntries(DirectoryPump.java:53)
    at proguard.InputReader.readInput(InputReader.java:184)
    ... 12 more
:DigitalMusicAndroidAppOne:shrinkFourFireOSDebugMultiDexComponents FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':DigitalMusicAndroidAppOne:shrinkFourFireOSDebugMultiDexComponents'.
> java.io.IOException: Can't read [/Users/fruitman/dev/MusicAndroid-one/build/DigitalMusicAndroidAppOne/DigitalMusicAndroidAppOne-11.0/RHEL5_64/DEV.STD.PTHREAD/build/private/android-gradle/intermediates/classes-proguard/fourfireOS/debug/classes.jar] (Can't process class [com/company/communication/ir/ParcelableIRServiceEndpoint.class] (Unexpected end of ZLIB input stream))

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 47.07 secs

                        BUILD FAILED    

【问题讨论】：

“出了什么问题”引用了ParcelableIRServiceEndpoint，所以这取决于你在那里做什么

@cricket_007 是的，但这与重复的 MultiDex 类有什么关系？我查看了 ParcelableIRServiceEndpoint。这是一个非常简单的类，位于导入的 jar 中，不包含或定义与 MultiDex 相关的任何内容。

不确定。我只是认为“ZLIB 输入流的意外结束”可能意味着该类中的某些内容

我也不确定，但我认为重复类是根本原因，第二个错误是由第一个错误引起的。

【参考方案1】：

两天后，我在 lib..multidex 1.0.1 中找到了问题，但是依赖项是 1.0.0，所以只需杀死 lib，它现在可以工作了