i am getting this exception in my app,I am trying to solve this for three days,what changes can remove this exception
Error:Execution failed for task ':app:transformClassesWithJarMergingForDebug'.
com.android.build.api.transform.TransformException: java.util.zip.ZipException: duplicate entry: org/apache/commons/codec/binary/Hex.class
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.1', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.google.android.gms:play-services:10.2.1'
compile(name:'lmrideviewlib', ext:'aar')
testCompile 'junit:junit:4.12'
compile files('libs/aws-android-sdk-core-2.3.0.jar')
compile files('libs/aws-android-sdk-s3-2.3.0.jar')
}