no valid keystore

[litingjun2015]

Hello,

As Jetty wiki said, I'm creating keystore using keytool -keystore /etc/cas/jetty/thekeystore -alias cas -genkey -keyalg RSA

$ ll /etc/cas/jetty/
total 20
-rw-r--r-- 1 Administrator 197121 7293 Jan 28 10:11 thekeystore

but when I run mvn clean package jetty:run-forked , it's said:

[STDERR] 2019-01-28 10:11:35.785:INFO:oejs.ServerConnector:main: Started ServerConnector@54e7df6a{HTTP/1.1,[http/1.1]}{0.0.0.0:9080}
[STDOUT] -40LXX65XTU2L no valid keystore
[STDERR] java.lang.IllegalStateException: no valid keystore
[STDERR] at org.eclipse.jetty.util.security.CertificateUtils.getKeyStore(CertificateUtils.java:48)
[STDERR] at org.eclipse.jetty.util.ssl.SslContextFactory.loadKeyStore(SslContextFactory.java:1020)
[STDERR] at org.eclipse.jetty.util.ssl.SslContextFactory.doStart(SslContextFactory.java:336)
[STDERR] at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
[STDERR] at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132)
[STDERR] at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114)
[STDERR] at org.eclipse.jetty.server.SslConnectionFactory.doStart(SslConnectionFactory.java:64)
[STDERR] at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
[STDERR] at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132)
[STDERR] at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114)
[STDERR] at org.eclipse.jetty.server.AbstractConnector.doStart(AbstractConnector.java:260)
[STDERR] at org.eclipse.jetty.server.AbstractNetworkConnector.doStart(AbstractNetworkConnector.java:81)
[STDERR] at org.eclipse.jetty.server.ServerConnector.doStart(ServerConnector.java:244)
[STDERR] at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
[STDERR] at org.eclipse.jetty.server.Server.doStart(Server.java:384)
[STDERR] at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
[STDERR] at org.eclipse.jetty.maven.plugin.Starter.run(Starter.java:370)
[STDERR] at org.eclipse.jetty.maven.plugin.Starter.main(Starter.java:468)
[INFO] Forked execution exit: 1
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------

Please help.