Android Studio 错误 Duplicate files copied in APK META-INF/LICENSE.txt解决方案

<code style="margin: 0px; padding: 0px; border: 0px; font-family: Consolas, Menlo, Monaco, 'Lucida Console', 'Liberation Mono', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Courier New', monospace, sans-serif; white-space: inherit;"><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">android </span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">{</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">

    packagingOptions </span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">{</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">
    exclude </span><span class="str" style="margin: 0px; padding: 0px; border: 0px; color: rgb(128, 0, 0);">'META-INF/LICENSE.txt'</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">
    </span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">}</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">
</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">}</span></code>

My logcat: log Execution failed for task ':Prog:packageDebug'.

Duplicate files copied in APK META-INF/LICENSE.txt File 1: /home/scijoker/AndroidStudioProjects/ProgProject/Prog/libs/httpclient-4.1.1.jar File 2: /home/scijoker/AndroidStudioProjects/ProgProject/Prog/libs/httpclient-4.1.1.jar