[jboss-user] [JBoss Seam] - Re: Tutorial: Handling images in your Seam application

[syzork]

when i call something like em.query(...) returns an exception:


  | 16:00:30,890 ERROR [STDERR] java.lang.NullPointerException
  | 16:00:30,890 ERROR [STDERR] 	at com.flavio.b.ArtworkServlet.doGet(ArtworkServlet.java:59)
  | 16:00:30,890 ERROR [STDERR] 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
  | 16:00:30,890 ERROR [STDERR] 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
  | 16:00:30,890 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
  | 16:00:30,890 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  | 16:00:31,046 ERROR [STDERR] 	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
  | 16:00:31,046 ERROR [STDERR] 	at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68)
  | 16:00:31,046 ERROR [STDERR] 	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
  | 16:00:31,046 ERROR [STDERR] 	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:73)
  | 16:00:31,046 ERROR [STDERR] 	at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85)
  | 16:00:31,125 ERROR [STDERR] 	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
  | 16:00:31,125 ERROR [STDERR] 	at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
  | 16:00:31,125 ERROR [STDERR] 	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
  | 16:00:31,125 ERROR [STDERR] 	at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:44)
  | 16:00:31,125 ERROR [STDERR] 	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
  | 16:00:31,125 ERROR [STDERR] 	at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141)
  | 16:00:31,125 ERROR [STDERR] 	at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
  | 16:00:31,125 ERROR [STDERR] 	at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
  | 16:00:31,125 ERROR [STDERR] 	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
  | 16:00:31,125 ERROR [STDERR] 	at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
  | 16:00:31,125 ERROR [STDERR] 	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
  | 16:00:31,625 ERROR [STDERR] 	at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
  | 16:00:31,625 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
  | 16:00:31,625 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  | 16:00:31,625 ERROR [STDERR] 	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
  | 16:00:31,625 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
  | 16:00:32,125 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  | 16:00:32,125 ERROR [STDERR] 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
  | 16:00:32,125 ERROR [STDERR] 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
  | 16:00:32,125 ERROR [STDERR] 	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
  | 16:00:32,125 ERROR [STDERR] 	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
  | 16:00:32,125 ERROR [STDERR] 	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
  | 16:00:32,125 ERROR [STDERR] 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
  | 16:00:32,125 ERROR [STDERR] 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
  | 16:00:32,125 ERROR [STDERR] 	at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
  | 16:00:32,125 ERROR [STDERR] 	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
  | 16:00:32,125 ERROR [STDERR] 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
  | 16:00:32,125 ERROR [STDERR] 	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
  | 16:00:32,125 ERROR [STDERR] 	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
  | 16:00:32,125 ERROR [STDERR] 	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
  | 16:00:32,125 ERROR [STDERR] 	at java.lang.Thread.run(Thread.java:595)
  | 

i tried comment the line:
EntityManager em = (EntityManager) Component.getInstance("entityManager");

and inject entityManager by hand with @In:
@In(create = true, value = "entityManager") 
private EntityManager em;


View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4100998#4100998

Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4100998