【求助】谁来拯救我！Android studio 打包APK时报错了！求救！

Error:Error converting bytecode to dex:
Cause: com.android.dex.DexException: Multiple dex files define Lcom/squareup/okhttp/internal/DiskLruCache$1;
Error:Execution failed for task ':app:transformClassesWithDexForRelease'.
> 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 'C:\Program Files\Java\jdk1.8.0_45\bin\java.exe'' finished with non-zero exit value 2
Information:BUILD FAILED
Information:Total time: 1 mins 26.667 secs
Information:1,570 errors
Information:0 warnings
Information:See complete output in console
以上的报错的信息。。。。。各种查找！！可惜很多英文看不懂啊！！！哭晕了！！！求大神救我！