gradlew.bat (and gradlew) SSLHandShakeException

Question

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!

Answer 1

if you could not fix anyway. and if you are inside firewall.
then.
you may can not download https.

should fix that Edit gradle-wrapper.properties file.

vi [project]/gradle/wrapper/gradle-wrapper.properties  #distributionUrl=https\://services.gradle.org/distributions/gradle-2.8-bin.zip  distributionUrl=http\://services.gradle.org/distributions/gradle-2.8-bin.zip 

change from https to http...

http://blog.cjred.net/gradlew-bat-and-gradlew-sslhandshakeexception/

After I modified, it says: Server returned HTTP response code: 403 for URL: http://services.gradle.org/distributions/gradle-6.0.1-all.zip

Answer 2

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.