解决新版AndroidStudio 导入HttpClient摩擦

HttpClient虽然已经被Google抛弃，但是有限项目依然依赖这些库，还得用。我把Httpclient的所有库导入项目后，会产生如下错误。

Error:duplicate files during packaging of APK F:\Downloads\MyApplication7\app\build\outputs\apk\app-debug-unaligned.apk

Path in archive: META-INF/DEPENDENCIES

Origin 1: F:\Downloads\MyApplication7\app\libs\httpclient-4.5.2.jar

Origin 2: F:\Downloads\MyApplication7\app\libs\httpcore-4.4.4.jar

经过查找可以在文件中(app\build.gradle)加入以下代码消除这个问题。

1. packagingOptions?{??
2. ????exclude?'META-INF/DEPENDENCIES'??
3. ????exclude?'META-INF/NOTICE'??
4. ????exclude?'META-INF/LICENSE'??
5. ????exclude?'META-INF/LICENSE.txt'??
6. ????exclude?'META-INF/NOTICE.txt'??
7. ????exclude?'META-INF/ASL2.0'??
8. ????exclude?'META-INF/notice.txt'??
9. }??

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整个文件如下：

apply plugin: 'com.android.application'android {    compileSdkVersion 23    buildToolsVersion "23.0.3"    defaultConfig {        applicationId "com.xba.imagetest"        minSdkVersion 16        targetSdkVersion 19        versionCode 1        versionName "1.0"    }    buildTypes {        release {            minifyEnabled false            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'        }    }    productFlavors {    }    packagingOptions {        exclude 'META-INF/DEPENDENCIES'        exclude 'META-INF/NOTICE'        exclude 'META-INF/LICENSE'        exclude 'META-INF/LICENSE.txt'        exclude 'META-INF/NOTICE.txt'        exclude 'META-INF/ASL2.0'        exclude 'META-INF/notice.txt'    }}dependencies {    compile fileTree(include: ['*.jar'], dir: 'libs')    testCompile 'junit:junit:4.12'    compile 'com.android.support:appcompat-v7:23.1.1'    compile files('libs/httpclient-4.5.2.jar')    compile files('libs/httpcore-4.4.4.jar')}

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