尽管路径正确,但无法使用grails

我正试图在运行windows 10的计算机上设置grails,但我无法这样做。我已经从网站(3.3.8)下载了最新版本,在我的帐户中添加了一个grails\u home变量,指向解压缩的grails目录,并将其bin子目录的路径添加到系统路径,同时 grails -v 正确地运行和输出GRAILS、Gradle和Java版本,基本上没有其他命令。

当我尝试用 grails create-app someApp 我得到 | Error Error initializing classpath: services.gradle.org 像这样的痕迹:

| Resolving Dependencies. Please wait...
Downloading https://services.gradle.org/distributions/gradle-3.5-bin.zip

| Error Error initializing classpath: services.gradle.org
java.net.UnknownHostException: services.gradle.org
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184)
        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:589)
        at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:673)
        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:463)
        at sun.net.www.http.HttpClient.openServer(HttpClient.java:558)
        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:1156)
        at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1050)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1564)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1492)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:263)
        at org.gradle.wrapper.Download.downloadInternal(Download.java:58)
        at org.gradle.wrapper.Download.download(Download.java:44)
        at org.gradle.tooling.internal.consumer.DistributionFactory$ProgressReportingDownload.download(DistributionFactory.java:201)
        at org.gradle.wrapper.Install$1.call(Install.java:61)
        at org.gradle.wrapper.Install$1.call(Install.java:48)
        at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAccessManager.java:65)
        at org.gradle.wrapper.Install.createDist(Install.java:48)
        at org.gradle.tooling.internal.consumer.DistributionFactory$ZippedDistribution$1.call(DistributionFactory.java:138)
        at org.gradle.tooling.internal.consumer.DistributionFactory$ZippedDistribution$1.call(DistributionFactory.java:132)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
| Error Error initializing classpath: services.gradle.org

类似地,当我试图下载一个项目(比如从start.grails.org生成的项目)并在本地运行它时 grailsw run-app 我得到:

You must be connected to the internet the first time you use the Grails wrapper
java.net.UnknownHostException: repo.grails.org
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184)
        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:589)
        at java.net.Socket.connect(Socket.java:538)
        at sun.net.NetworkClient.doConnect(NetworkClient.java:180)
        at sun.net.www.http.HttpClient.openServer(HttpClient.java:463)
        at sun.net.www.http.HttpClient.openServer(HttpClient.java:558)
        at sun.net.www.http.HttpClient.<init>(HttpClient.java:242)
        at sun.net.www.http.HttpClient.New(HttpClient.java:339)
        at sun.net.www.http.HttpClient.New(HttpClient.java:357)
        at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1220)
        at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1156)
        at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1050)
        at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:984)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1564)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1492)
        at java.net.URL.openStream(URL.java:1045)
        at grails.init.Start.getVersion(Start.java:36)
        at grails.init.Start.main(Start.java:83)

即使一个简单的帮助命令也不起作用,因为 grails -help 输出 | Error Error occurred running Grails CLI: repo.grails.org

这可能是什么原因?公司防火墙是不是在屏蔽什么东西?我该怎么做?