CAS报错
2013-12-31 16:12:53,907 INFO [com.netease.cas.client.web.filter.Cas20ServiceTicketValidationFilter] - Attempting to validate ticket: ST-4890-nuxg3goAbU7V2gQVIAKv
[16:12:53.935] {http--6080-3$2390055} java.lang.ExceptionInInitializerError
[16:12:53.935] {http--6080-3$2390055}  at sun.net.www.protocol.https.HttpsURLConnectionImpl.<init>(HttpsURLConnectionImpl.java:86)
[16:12:53.935] {http--6080-3$2390055}  at sun.net.www.protocol.https.Handler.openConnection(Handler.java:62)
[16:12:53.935] {http--6080-3$2390055}  at sun.net.www.protocol.https.Handler.openConnection(Handler.java:57)
[16:12:53.935] {http--6080-3$2390055}  at java.net.URL.openConnection(URL.java:971)
[16:12:53.935] {http--6080-3$2390055}  at com.netease.cas.client.util.CommonUtils.getResponseFromServer(CommonUtils.java:227)
[16:12:53.935] {http--6080-3$2390055}  at com.netease.cas.client.validation.AbstractUrlBasedTicketValidator.retrieveResponseFromServer(AbstractUrlBasedTicketValidator.java:136)
[16:12:53.935] {http--6080-3$2390055}  at com.netease.cas.client.validation.AbstractUrlBasedTicketValidator.validate(AbstractUrlBasedTicketValidator.java:155)
[16:12:53.935] {http--6080-3$2390055}  at com.netease.cas.client.web.filter.AbstractTicketValidationFilter.doFilter(AbstractTicketValidationFilter.java:82)
[16:12:53.935] {http--6080-3$2390055}  at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:87)
[16:12:53.935] {http--6080-3$2390055}  at com.netease.cas.client.web.filter.AuthenticationFilter.doFilter(AuthenticationFilter.java:156)
[16:12:53.935] {http--6080-3$2390055}  at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:87)
[16:12:53.935] {http--6080-3$2390055}  at com.netease.ticketms.web.filter.Log4jMDCFilter.doFilter(Log4jMDCFilter.java:55)
[16:12:53.935] {http--6080-3$2390055}  at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:87)
[16:12:53.935] {http--6080-3$2390055}  at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
[16:12:53.935] {http--6080-3$2390055}  at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
[16:12:53.935] {http--6080-3$2390055}  at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:87)
[16:12:53.935] {http--6080-3$2390055}  at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:187)
[16:12:53.935] {http--6080-3$2390055}  at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:265)
[16:12:53.935] {http--6080-3$2390055}  at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:273)
[16:12:53.935] {http--6080-3$2390055}  at com.caucho.server.port.TcpConnection.run(TcpConnection.java:682)
[16:12:53.935] {http--6080-3$2390055}  at com.caucho.util.ThreadPool$Item.runTasks(ThreadPool.java:743)
[16:12:53.935] {http--6080-3$2390055}  at com.caucho.util.ThreadPool$Item.run(ThreadPool.java:662)
[16:12:53.935] {http--6080-3$2390055}  at java.lang.Thread.run(Thread.java:724)
[16:12:53.935] {http--6080-3$2390055} Caused by: java.lang.NullPointerException
[16:12:53.935] {http--6080-3$2390055}  at