Android Studio--Error:duplicate files during packaging of APK F:\android_studio_project\nizaoma\app\

错误详情：

 

Error:duplicate files during packaging of APK F:\android_studio_project\nizaoma\app\build\outputs\apk\app-debug-unaligned.apk
    Path in archive: META-INF/NOTICE.txt
    Origin 1: F:\android_studio_project\nizaoma\app\libs\httpmime-4.2.4.jar
    Origin 2: F:\android_studio_project\nizaoma\app\libs\fastjson.jar
You can ignore those files in your build.gradle:
    android {
      packagingOptions {
        exclude 'META-INF/NOTICE.txt'
      }
    }
Error:Execution failed for task ':app:packageDebug'.
> Duplicate files copied in APK META-INF/NOTICE.txt
    File 1: F:\android_studio_project\nizaoma\app\libs\httpmime-4.2.4.jar
    File 2: F:\android_studio_project\nizaoma\app\libs\httpmime-4.2.4.jar

 

解决办法：

看起来是因为多个 jar 包里包含了同样的文件（NOTICE.txt），导致打包时因为担心相互覆盖问题而提示出错。
尝试下在 app 下的 build.gradle 中的 android 部分增加一段配置：

 

packagingOptions {
    exclude 'META-INF/LICENSE.txt'
    exclude 'META-INF/NOTICE.txt'
}