this is a POI test 目前存在的问题是这样的：
ProGuard, version 5.2.1
Reading program jar [F:\Towrd\app\build\intermediates\transforms\jarMerging\debug\jars\1\1f\combined.jar]
Reading library jar [E:\adt-bundle-windows-x86_64-20140702\sdk\build-tools\21.1.1\lib\shrinkedAndroid.jar]
Preparing output jar [F:\Towrd\app\build\intermediates\multi-dex\debug\componentClasses.jar]
Copying resources from program jar [F:\Towrd\app\build\intermediates\transforms\jarMerging\debug\jars\1\1f\combined.jar]
:app:transformClassesWithDexForDebug
Running dex in-process requires build tools 23.0.2.
For faster builds update this project to use the latest build tools.
Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
Error:(org.apache.xmlbeans.XmlBeans$1) that doesn't come with an
Error:associated EnclosingMethod attribute. This class was probably produced by a
Error:compiler that did not target the modern .class file format. The recommended
Error:solution is to recompile the class from source, using an up-to-date compiler
Error:and without specifying any "-target" type options. The consequence of ignoring
Error:this warning is that reflective operations on this class will incorrectly
Error:indicate that it is *not* an inner class.
Error:1 error; aborting
:app:transformClassesWithDexForDebug FAILED
Error:Execution failed for task ':app:transformClassesWithDexForDebug'.
> com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'F:\Program Files\Java\jdk1.7.0_80\bin\java.exe'' finished with non-zero exit value 1
Information:BUILD FAILED
Information:Total time: 26.646 secs
Information:178 errors
Information:0 warnings
Information:See complete output in console