我正在关注this grpc tutorial,我甚至无法完成第一步。第一步是git克隆项目然后运行
cd examples
./gradlew installDist
我遇到了这个堆栈跟踪
Downloading https://services.gradle.org/distributions/gradle-2.13-bin.zip
Exception in thread "main" java.net.UnknownHostException: services.gradle.org
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:668)
at sun.security.ssl.BaseSSLSocketImpl.connect(BaseSSLSocketImpl.java:173)
at sun.net.NetworkClient.doConnect(NetworkClient.java:180)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:264)
at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:367)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:191)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1105)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:999)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1513)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1441)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:254)
at org.gradle.wrapper.Download.downloadInternal(Download.java:58)
at org.gradle.wrapper.Download.download(Download.java:44)
at org.gradle.wrapper.Install$1.call(Install.java:61)
at org.gradle.wrapper.Install$1.call(Install.java:48)
at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAccessManager.java:65)
at org.gradle.wrapper.Install.createDist(Install.java:48)
at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:128)
at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61)
我认为这是一个代理问题,所以我从this post获得了一些灵感并打开了文件
gradle/wrapper/gradle-wrapper.properties
并添加了行
systemProp.http.proxyHost=<my proxy>
systemProp.http.proxyPort=<my port>
我还用这个
替换了distributionUrl行distributionUrl=http\://services.gradle.org/distributions/gradle-2.13-bin.zip
也就是说,我切换了https - &gt; HTTP。
毕竟,我仍然得到相同的堆栈跟踪。
有人有建议吗?
编辑:我添加了gradle.properties
文件在主目录中,并添加了字段
systemProp.http.proxyHost
systemProd.http.proxyPort
和
systemProp.https.proxyHost
systemProp.https.proxyPort
但我仍然遇到和以前一样的错误。但是,构建脚本似乎在这一行停滞
Downloading https://services.gradle.org/distributions/gradle-2.13-bin.zip
大约10秒钟左右,失败前。那么......进步?
答案 0 :(得分:3)
我遇到了同样的问题,两个小时后终于找到了解决方案...
转到项目中的文件 gradlew.bat 并更改 DEFAULT_JVM_OPTS 变量,如下所示:
set DEFAULT_JVM_OPTS=-Dhttp.proxyHost=YOUR_HOST -Dhttp.proxyPort=PORT -Dhttp.proxyUser=USERNAME -Dhttp.proxyPassword=PASSWORD -Dhttps.proxyHost=YOUR_HOST -Dhttps.proxyPort=PORT -Dhttps.proxyUser=USERNAME -Dhttps.proxyPassword=PASSWORD
然后运行gradlew clean build
。
答案 1 :(得分:0)
我不知道这是否是最佳解决方案,但最终对我有用的是取代
distributionUrl=https\://services.gradle.org/distributions/gradle-2.13-bin.zip
与
distributionUrl=https\://services.gradle.org/distributions/gradle-3.0-bin.zip
基本上升级我正在抓取的gradle版本。
我还添加了一个全局
~/.gradle/gradle.properties
在我的主目录中,包含我之前声明的所有代理信息。我这样做后的尝试是不成功的,但我无法肯定地说这样做是否会产生影响。