具體錯誤提示爲：
Error:Could not resolve all files for configuration ':app:debugAnnotationProcessorClasspath'.
> Could not download dagger-compiler.jar (com.google.dagger:dagger-compiler:2.15)
> Could not get resource 'https://jcenter.bintray.com/com/google/dagger/dagger-compiler/2.15/dagger-compiler-2.15.jar'.
> Could not GET 'https://jcenter.bintray.com/com/google/dagger/dagger-compiler/2.15/dagger-compiler-2.15.jar'.
> Remote host closed connection during handshake
> Could not download google-java-format.jar (com.google.googlejavaformat:google-java-format:1.4)
> Could not get resource 'https://jcenter.bintray.com/com/google/googlejavaformat/google-java-format/1.4/google-java-format-1.4.jar'.
> Could not GET 'https://jcenter.bintray.com/com/google/googlejavaformat/google-java-format/1.4/google-java-format-1.4.jar'.
> Remote host closed connection during handshake
> Could not download guava.jar (com.google.guava:guava:23.3-jre)
> Could not get resource 'https://jcenter.bintray.com/com/google/guava/guava/23.3-jre/guava-23.3-jre.jar'.
> Could not GET 'https://jcenter.bintray.com/com/google/guava/guava/23.3-jre/guava-23.3-jre.jar'.
> Remote host closed connection during handshake
Dagger2配置爲：
daggerVersion : "2.15",
