【发布时间】：2015-06-17 12:34:41
【问题描述】：
我是 Gradle 新手，正在阅读此处的 Spring 教程：
http://spring.io/guides/gs/gradle/
我到达了它告诉我添加此任务的部分：
task wrapper(type: Wrapper) {
gradleVersion = '2.3'
}
我运行 gradle wrapper 来创建 gradlew 和 gradlew.bat 文件。
尝试运行这两个我得到这个异常：
Downloading https://services.gradle.org/distributions/gradle-2.3-bin.zip
Exception in thread "main" javax.net.ssl.SSLHandshakeException: sun.security.val
idator.ValidatorException: PKIX path building failed: sun.security.provider.cert
path.SunCertPathBuilderException: unable to find valid certification path to req
uested target
at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1884)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:276)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:270)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.
java:1341)
at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.jav
a:153)
at sun.security.ssl.Handshaker.processLoop(Handshaker.java:868)
at sun.security.ssl.Handshaker.process_record(Handshaker.java:804)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1016)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.
java:1312)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1339
)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1323
)
at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:
563)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect
(AbstractDelegateHttpsURLConnection.java:185)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLCon
nection.java:1300)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Http
sURLConnectionImpl.java:254)
at org.gradle.wrapper.Download.downloadInternal(Download.java:56)
at org.gradle.wrapper.Download.download(Download.java:42)
at org.gradle.wrapper.Install$1.call(Install.java:57)
at org.gradle.wrapper.Install$1.call(Install.java:44)
at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAcc
essManager.java:65)
at org.gradle.wrapper.Install.createDist(Install.java:44)
at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:126)
at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:56)
Caused by: sun.security.validator.ValidatorException: PKIX path building failed:
sun.security.provider.certpath.SunCertPathBuilderException: unable to find vali
d certification path to requested target
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:385)
at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.jav
a:292)
at sun.security.validator.Validator.validate(Validator.java:260)
at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.j
ava:326)
at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerIm
pl.java:231)
at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustMan
agerImpl.java:126)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.
java:1323)
... 19 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to
find valid certification path to requested target
at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCert
PathBuilder.java:196)
at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:268)
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:380)
... 25 more
我尝试访问https://services.gradle.org/distributions/gradle-2.3-bin.zip 的网络服务器，但没有收到任何错误。我错过了某种配置？任何帮助，将不胜感激。谢谢！
【问题讨论】：