Error:duplicate files during packaging of APK Path in archive: META-INF/LICENSE.txt

添加了这两个jar包的时候，编译的时候出现类似错误。
Error:duplicate files during packaging of APK Path in archive: META-INF/LICENSE.txt

commons-io-2.4.jar
commons-collections4-4.0.jar

根据提示可以添加相应的文件即可。
android {
     // ......
     buildTypes {

        release {

            minifyEnabled false

            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

        }

    }
    packagingOptions {

        exclude 'META-INF/LICENSE.txt'

        exclude 'META-INF/NOTICE.txt'

        exclude 'META-INF/MANIFEST.MF'

    }

}