Android Studio 3.0 Annotation processors Error

升级到Android Studio 3.0之后，当编译项目的时候，如果项目使饮用了Lombok和Butterknifeh这两个开源项目，你就会发现在编译过程中发生以下错误：

Error:Execution failed for task ':Base:javaPreCompileDebug'.
> Annotation processors must be explicitly declared now.  The following dependencies on the compile classpath are found to contain annotation processor.  Please add them to the annotationProcessor configuration.
    - butterknife-7.0.1.jar (com.jakewharton:butterknife:7.0.1)
  Alternatively, set android.defaultConfig.javaCompileOptions.annotationProcessorOptions.includeCompileClasspath = true to continue with previous behavior.  Note that this option is deprecated and will be removed in the future.
  See https://developer.android.com/r/tools/annotation-processor-error-message.html for more details.

错误日志已经告诉我们了，在Android Studio 3.0 之后 annotationProcessor必须由我们开发者显示声明了，添加annotationProcessor之后即可解决此问题。

compile 'com.jakewharton:butterknife:7.0.1'
annotationProcessor 'com.jakewharton:butterknife:7.0.1'

参考链接：

• https://stackoverflow.com/a/44084804