java.util.concurrent.ExecutionException: javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target は何だか面倒っぽくなってきたな…。
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javax.net.ssl.trustStoreに$JAVA_HOME/lib/security/cacerts指定しても駄目なので分からぬ。