java.lang.NullPointerException

ZK-Tracker | rangringo | 5 years ago
tip
Do you know that we can give you better hits? Get more relevant results from Samebug’s stack trace search.
  1. 0

    Konqueror 4.8.4 can't create ZK sessions because the version extraction from the HTTP "user-agent" header fails. partial HTTP header: user-agent: Mozilla/5.0 (X11; Linux x86_64) KHTML/4.8.4 (like Gecko) Konqueror/4.8 causes: SEVERE: Servlet.service() for servlet [zkLoader] in context with path [/demo] threw exception java.lang.NullPointerException at org.zkoss.web.servlet.Servlets.getVersion(Servlets.java:460) at org.zkoss.web.servlet.Servlets.getVersion(Servlets.java:457) at org.zkoss.web.servlet.Servlets.browserInfo(Servlets.java:419) at org.zkoss.web.servlet.Servlets.browserInfo(Servlets.java:363) at org.zkoss.web.servlet.Servlets.getBrowser(Servlets.java:325) at org.zkoss.zk.ui.http.ExecutionImpl.<init>(ExecutionImpl.java:102) at org.zkoss.zk.ui.http.TemporaryExecution.<init>(TemporaryExecution.java:41) at org.zkoss.zk.ui.http.WebManager.newDesktop(WebManager.java:475) at org.zkoss.zk.ui.http.WebManager.getDesktop(WebManager.java:461) at org.zkoss.zk.ui.http.DHtmlLayoutServlet.process(DHtmlLayoutServlet.java:186) at org.zkoss.zk.ui.http.DHtmlLayoutServlet.doGet(DHtmlLayoutServlet.java:135) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:581) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:679)

    ZK-Tracker | 5 years ago | rangringo
    java.lang.NullPointerException
  2. 0

    Konqueror 4.8.4 can't create ZK sessions because the version extraction from the HTTP "user-agent" header fails. partial HTTP header: user-agent: Mozilla/5.0 (X11; Linux x86_64) KHTML/4.8.4 (like Gecko) Konqueror/4.8 causes: SEVERE: Servlet.service() for servlet [zkLoader] in context with path [/demo] threw exception java.lang.NullPointerException at org.zkoss.web.servlet.Servlets.getVersion(Servlets.java:460) at org.zkoss.web.servlet.Servlets.getVersion(Servlets.java:457) at org.zkoss.web.servlet.Servlets.browserInfo(Servlets.java:419) at org.zkoss.web.servlet.Servlets.browserInfo(Servlets.java:363) at org.zkoss.web.servlet.Servlets.getBrowser(Servlets.java:325) at org.zkoss.zk.ui.http.ExecutionImpl.<init>(ExecutionImpl.java:102) at org.zkoss.zk.ui.http.TemporaryExecution.<init>(TemporaryExecution.java:41) at org.zkoss.zk.ui.http.WebManager.newDesktop(WebManager.java:475) at org.zkoss.zk.ui.http.WebManager.getDesktop(WebManager.java:461) at org.zkoss.zk.ui.http.DHtmlLayoutServlet.process(DHtmlLayoutServlet.java:186) at org.zkoss.zk.ui.http.DHtmlLayoutServlet.doGet(DHtmlLayoutServlet.java:135) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:581) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:679)

    ZK-Tracker | 5 years ago | rangringo
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at org.zkoss.web.servlet.Servlets.getVersion()
    2. The ZKoss Web Library
      Servlets.getBrowser
      1. org.zkoss.web.servlet.Servlets.getVersion(Servlets.java:460)
      2. org.zkoss.web.servlet.Servlets.getVersion(Servlets.java:457)
      3. org.zkoss.web.servlet.Servlets.browserInfo(Servlets.java:419)
      4. org.zkoss.web.servlet.Servlets.browserInfo(Servlets.java:363)
      5. org.zkoss.web.servlet.Servlets.getBrowser(Servlets.java:325)
      5 frames
    3. ZK Kernel
      DHtmlLayoutServlet.doGet
      1. org.zkoss.zk.ui.http.ExecutionImpl.<init>(ExecutionImpl.java:102)
      2. org.zkoss.zk.ui.http.TemporaryExecution.<init>(TemporaryExecution.java:41)
      3. org.zkoss.zk.ui.http.WebManager.newDesktop(WebManager.java:475)
      4. org.zkoss.zk.ui.http.WebManager.getDesktop(WebManager.java:461)
      5. org.zkoss.zk.ui.http.DHtmlLayoutServlet.process(DHtmlLayoutServlet.java:186)
      6. org.zkoss.zk.ui.http.DHtmlLayoutServlet.doGet(DHtmlLayoutServlet.java:135)
      6 frames
    4. JavaServlet
      HttpServlet.service
      1. javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
      2. javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
      2 frames
    5. Glassfish Core
      CoyoteAdapter.service
      1. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
      2. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
      3. org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
      4. org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
      5. org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:581)
      6. org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
      7. org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
      8. org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
      9. org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
      10. org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
      10 frames
    6. Grizzly HTTP
      JIoEndpoint$SocketProcessor.run
      1. org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001)
      2. org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
      3. org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
      3 frames
    7. Java RT
      Thread.run
      1. java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
      2. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
      3. java.lang.Thread.run(Thread.java:679)
      3 frames