android重复的文件复制APK META-INF许可证错误记录

* What went wrong:
Execution failed for task ':app:transformResourcesWithMergeJavaResForDebug'.
> com.android.build.api.transform.TransformException: com.android.builder.packaging.DuplicateFileException: Duplicate files copied in APK META-INF/LICENSE
File1: C:\AndroidStudio\Umer_Doctor\app\libs\httpmime-4.3.5.jar
File2: C:\AndroidStudio\Umer_Doctor\app\libs\httpcore-4.3.2.jar

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

这个是当时抛出的异常信息，很奇怪，应该是第三方包文件冲突，下面是解决方案（如果有更了解的人欢迎详细解说下，互相学习）

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'
    }

这个是完整的解决方案，虽然我不知道这是什么原因，估计是编译器的问题，说不定以后as升级了不会发生，我用的是1.5版本的