使用cocosCreator制作一个demo，然后按照官方教程下载安装androidstudio并配置andoridSDK和NDK开始生成apk。构建完成后，开始编译，但是编译失败。报错信息为一些.jar无法下载。
FAILURE: Build failed with an exception.
- What went wrong:
A problem occurred configuring root project ‘proj.android-studio’.
Could not resolve all files for configuration ‘:classpath’.
Could not download bcpkix-jdk15on.jar (org.bouncycastle:bcpkix-jdk15on:1.56)
Could not get resource ‘https://jcenter.bintray.com/org/bouncycastle/bcpkix-jdk15on/1.56/bcpkix-jdk15on-1.56.jar’.
Could not GET ‘https://jcenter.bintray.com/org/bouncycastle/bcpkix-jdk15on/1.56/bcpkix-jdk15on-1.56.jar’. Received status code 400 from server: Bad Request
Could not download guava.jar (com.google.guava:guava:22.0)
Could not get resource ‘https://jcenter.bintray.com/com/google/guava/guava/22.0/guava-22.0.jar’.
Could not GET ‘https://jcenter.bintray.com/com/google/guava/guava/22.0/guava-22.0.jar’. Received status code 400 from server: Bad Request
Could not download gson.jar (com.google.code.gson:gson:2.3)
Could not get resource ‘https://jcenter.bintray.com/com/google/code/gson/gson/2.3/gson-2.3.jar’.
Could not GET ‘https://jcenter.bintray.com/com/google/code/gson/gson/2.3/gson-2.3.jar’. Received status code 400 from server: Bad Request
Could not download httpclient.jar (org.apache.httpcomponents:httpclient:4.2.6)
Could not get resource ‘https://jcenter.bintray.com/org/apache/httpcomponents/httpclient/4.2.6/httpclient-4.2.6.jar’.
Could not GET ‘https://jcenter.bintray.com/org/apache/httpcomponents/httpclient/4.2.6/httpclient-4.2.6.jar’. Received status code 400 from server: Bad Request
Could not download httpcore.jar (org.apache.httpcomponents:httpcore:4.2.5)
Could not get resource ‘https://jcenter.bintray.com/org/apache/httpcomponents/httpcore/4.2.5/httpcore-4.2.5.jar’.
Could not GET ‘https://jcenter.bintray.com/org/apache/httpcomponents/httpcore/4.2.5/httpcore-4.2.5.jar’. Received status code 400 from server: Bad Request
Could not download commons-codec.jar (commons-codec:commons-codec:1.6)
Could not get resource ‘https://jcenter.bintray.com/commons-codec/commons-codec/1.6/commons-codec-1.6.jar’.
Could not GET ‘https://jcenter.bintray.com/commons-codec/commons-codec/1.6/commons-codec-1.6.jar’. Received status code 400 from server: Bad Request