kotlin配合dagger2出现的问题

最近没事玩玩kotlin，随便学习了一波dagger2，打配合使用下，但是出现了些问题，记录出来

问题

• Unresolved reference: DaggerAddFavoriteComponent
• Compilation error. See log for more details
• Caused by: org.gradle.api.GradleException: Compilation error. See log for more details
• org.gradle.api.tasks.TaskExecutionException: Execution failed for task ‘:app:compileDebugKotlin’.

配置

• kotlin插件
  • File->Settings->Plugins
  • 
  • 记住版本号 1.2.71
• project的build.gradle

buildscript {
   ext.kotlin_version = '1.2.71'
   repositories {
       google()
       jcenter()
   }
   dependencies {
       classpath 'com.android.tools.build:gradle:3.2.0'
       classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
   }
}

• app目录build.gradle

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-kapt'
kapt {
   generateStubs = true
}
...
dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
   //一定需要用annotationProcessor
   annotationProcessor "com.google.dagger:dagger-compiler:2.15"
   implementation 'com.google.dagger:dagger:2.15'
}