Error:Execution failed for task ':app:transformResourcesWithMergeJavaResFor解决方法

错误提示如下

Error:Execution failed for task ':app:transformResourcesWithMergeJavaResForLightningLiteDebug'.
> com.android.build.api.transform.TransformException: com.android.builder.packaging.DuplicateFileException: Duplicate files copied in APK META-INF/LICENSE
  File1: /home/wuxiaojun/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.core/jackson-databind/2.2.2/3c8f6018eaa72d43b261181e801e6f8676c16ef6/jackson-databind-2.2.2.jar
  File2: /home/wuxiaojun/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.core/jackson-core/2.2.2/d20be6a5ddd6f8cfd36ebf6dea329873a1c41f1b/jackson-core-2.2.2.jar
  File3: /home/wuxiaojun/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.core/jackson-annotations/2.2.2/285cb9c666f0f0f3dd8a1be04e1f457eb7b15113/jackson-annotations-2.2.2.jar

解决办法如下：

在你的主项目的build.gradle工程里添加如下

packagingOptions {

     exclude 'META-INF/LICENSE'   exclude 'META-INF/NOTICE' 　　}

　　整体build.gradle如下

apply plugin: 'com.android.application'
apply plugin: 'com.neenbedankt.android-apt'
apply plugin: 'com.getkeepsafe.dexcount'

android {
    compileSdkVersion 24
    buildToolsVersion "23.0.3"

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

    defaultConfig {
        minSdkVersion 14
        targetSdkVersion 24
        versionName "4.3.3"
        vectorDrawables.useSupportLibrary = true
    }

    sourceSets {
        lightningPlus.setRoot('src/LightningPlus')
        lightningLite.setRoot('src/LightningLite')
    }

    buildTypes {
        debug {
            minifyEnabled false
            shrinkResources false
            proguardFiles 'proguard-project.txt'
        }

        release {
            minifyEnabled true
            shrinkResources true
            proguardFiles 'proguard-project.txt'
        }
    }

    productFlavors {
        lightningPlus {
            buildConfigField "boolean", "FULL_VERSION", "true"
            applicationId "acr.browser.lightning"
            versionCode 88
        }

        lightningLite {
            buildConfigField "boolean", "FULL_VERSION", "false"
            applicationId "acr.browser.barebones"
            versionCode 90
        }
    }

    lintOptions {
        abortOnError true
    }

    packagingOptions {
        exclude '.readme'
    }
}

dexcount {
    includeClasses = false
    includeFieldCount = false
    printAsTree = true
    orderByMethodCount = true
    verbose = false
}

dependencies {

    // support libraries

    // html parsing for reading mode

    // event bus

    // dependency injection
    apt 'com.google.dagger:dagger-compiler:2.0.2'
    provided 'javax.annotation:jsr250-api:1.0'

    // view binding

    // permissions

    // proxy support

    // Use the following code to update the libnetcipher submodule
    // git submodule foreach git reset --hard
    // git submodule update --remote
    compile project(':NetCipher:libnetcipher')

    compile project(':Bonsai:library')

    compile project(':AnimatedProgressBar:library')

    // memory leak analysis
    debugCompile 'com.squareup.leakcanary:leakcanary-android:1.4'
    //releaseCompile 'com.squareup.leakcanary:leakcanary-android-no-op:1.4'
    compile 'com.android.support:palette-v7:24.2.0'
    compile 'com.android.support:appcompat-v7:24.2.0'
    compile 'com.android.support:design:24.2.0'
    compile 'com.android.support:recyclerview-v7:24.2.0'
    compile 'com.android.support:support-v4:24.2.0'
    compile 'org.jsoup:jsoup:1.9.2'
    compile 'com.squareup:otto:1.3.8'
    compile 'com.google.dagger:dagger:2.0.2'
    compile 'com.jakewharton:butterknife:7.0.1'
    compile 'com.anthonycr.grant:permissions:1.1.2'
    compile 'net.i2p.android:client:0.8'
    compile 'com.firebase:firebase-client-android:2.3.1'
}