这个下载文件失败，在哪能设置代理呢，复制粘贴到浏览器下载是没问题的。
下面是日志：
编译模式：release
使用 Android Studio 工程：C:\Users\Administrator\Desktop\jsb-default\frameworks\runtime-src\proj.android-studio
正在生成 apk 文件...
正在执行：'"C:\Users\Administrator\Desktop\jsb-default\frameworks\runtime-src\proj.android-studio\gradlew.bat" --parallel --info assembleRelease'
Downloading https://services.gradle.org/distributions/gradle-4.1-all.zip
Exception in thread "main" java.lang.RuntimeException: java.io.IOException: Unable to tunnel through proxy. Proxy returns "HTTP/1.1 400 Bad Request"
at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAccessManager.java:78)
at org.gradle.wrapper.Install.createDist(Install.java:47)
at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:129)
at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:48)
Caused by: java.io.IOException: Unable to tunnel through proxy. Proxy returns "HTTP/1.1 400 Bad Request"
at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:1873)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:183)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1300)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:254)
at org.gradle.wrapper.Download.downloadInternal(Download.java:59)
at org.gradle.wrapper.Download.download(Download.java:45)
at org.gradle.wrapper.Install$1.call(Install.java:60)
at org.gradle.wrapper.Install$1.call(Install.java:47)
at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAccessManager.java:65)
... 3 more
执行命令出错，返回值：1。
