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gradlegradlew

gradlew.bat (and gradlew) SSLHandShakeException

I'm new to Gradle and was going through this Spring Tutorial found here:

http://spring.io/guides/gs/gradle/

I get to the part where it tells me to add this task:

task wrapper(type: Wrapper) {
     gradleVersion = '2.3'
}

I run gradle wrapper which creates the gradlew and gradlew.bat files.

Trying to run both of this I get this exception:

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

I try to hit the webserver at https://services.gradle.org/distributions/gradle-2.3-bin.zip and I'm not getting any sort of error. I'm I missing some sort of config? Any help would be appreciated. Thanks!

Solution

  • I experienced the same problem, however my symptoms were that my Ubuntu machine couldn't resolve any SSL hosts unless I specifically added them to Java's certificate authority (cacert) file.

    I stumbled upon this Debian bug, and found a fairly straight-forward resolution: remove ca-certificates-java and install it again:

    sudo dpkg --purge --force-depends ca-certificates-java
sudo apt-get install ca-certificates-java

    I did a ./gradlew clean for good measure, and everything sprung to life again.