ionic cordova 打包 失败 无法下载 com.android.tools.build:gradle:2.3.0 PKIX path building failed: 请教大神帮忙，快疯了

Question

想要打包app,执行ionic cordova build android，出现
> Could not resolve com.android.tools.build:gradle:2.3.0.
> Could not get resource 'https://jcenter.bintray.com/com/android/tools/build/gradle/2.3.0/gradle-2.3.0.pom'.
> Could not GET 'https://jcenter.bintray.com/com/android/tools/build/gradle/2.3.0/gradle-2.3.0.pom'.
> sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification
path to requested target
> Could not resolve com.android.tools.build:gradle:2.3.0.
> Could not get resource 'https://jcenter.bintray.com/com/android/tools/build/gradle/2.3.0/gradle-2.3.0.pom'.
> Could not GET 'https://jcenter.bintray.com/com/android/tools/build/gradle/2.3.0/gradle-2.3.0.pom'.
> sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification
path to requested target

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 15s
[ERROR] An error occurred while running subprocess cordova.

    cordova.cmd build android exited with exit code 1.

    Re-running this command with the --verbose flag may provide more information.

Answer 1

是不是你那的网络不行，下载不了gradle-2.3.0.pom这个文件，我这可以下载，你要可以email给你。