错误：com.android.builder.packaging.DuplicateFileException: Duplicate files copied

Error:Execution failed for task ':app:transformResourcesWithMergeJavaResForDebug'.
> com.android.build.api.transform.TransformException: 
com.android.builder.packaging.DuplicateFileException: Duplicate files copied in APK META-INF/README.md  <!-- 这里提示的是相同文件冲突的名称-->
	File1: D:CooKaracookaraclientapplibsyoutubevget.jar
	File2: C:Usersguoxw.gradlecachesmodules-2files-2.1org.jsoupjsoup1.10.3842f960942503cf1abbcc8c173a7f2c19d43726jsoup-1.10.3.jar

1.加入jar包，多个jar包有相同文件产生的问题。

2.解决方法： buile.gradle

apply plugin: 'com.android.application'
android {
    compileSdkVersion 25
    buildToolsVersion "25.0.3"
 
         <!--  添加的解决方法 -->
    packagingOptions {
        exclude 'META-INF/README.md'  // 该处是上面错误异常提示的文件名
        exclude 'META-INF/CHANGES'
    }


    defaultConfig {
        applicationId ""
        minSdkVersion 16
        targetSdkVersion 25
        versionCode 20
        versionName "2.21"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    sourceSets {
        main {
            jniLibs.srcDirs = ['libs']
        }
    }
}




dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile project(':Ripplelibrary')
    //
    //
    compile 'com.android.support:appcompat-v7:25.3.1'
    compile 'com.android.support.constraint:constraint-layout:1.0.2'
    compile 'com.android.support:design:25.3.1'
    compile 'com.android.support:support-v4:25.3.1'
    compile 'org.greenrobot:eventbus:3.0.0'
    compile 'com.larswerkman:HoloColorPicker:1.5'
    compile 'com.nightonke:boommenu:2.1.0'
    compile 'com.android.support:palette-v7:25.3.1'
    compile 'com.dingmouren.paletteimageview:paletteimageview:1.0.6'
    compile 'com.github.devlight.shadowlayout:library:1.0.2'
    compile 'com.sdsmdg.harjot:croller:1.0.2'
    testCompile 'junit:junit:4.12'
    compile files('libs/picasso-2.5.2.jar')
    compile files('libs/xstream-1.4.7.jar')
    compile files('libs/jackson-databind-2.1.5.jar')
    compile files('libs/youtubevget.jar')
}