[jboss-user] [JBoss Seam] - Re: a4j:mediaOutput and SeamFaceletViewHandler

joff do-not-reply at jboss.com
Tue Jan 9 17:49:42 EST 2007


I get a very similar exception myself, using Seam 1.1GA, and Ajax4JSF 1.0.5 with the <a4j:mediaOutput> tag.

I'm wanting to display an image I have stored in my database, but also, in order to eliminate mis-configuration of my own application as a factor, I've modified the Hotel booking example thus:

in Hotel.java, I've added:
@Transient private byte[] image;
  | 
  | public Hotel() {
  |       try {
  |          FileInputStream fis = new FileInputStream("/testimage.png");
  |          image = new byte[8000];
  |          fis.read(image);
  |       } catch (Exception e) {
  |          e.printStackTrace();
  |       }
  |    }
  | 
  |    public void renderImage(OutputStream out, Object data) throws IOException {
  |       out.write(this.image);
  |    }

and in view/hotel.xhtml:
<div class="label">Image:</div>
  |       <div class="output">
  |          <a4j:mediaOutput createContent="#{hotel.renderImage}" value="#{hotel.name}.png" element="img" mimeType="image/png" />
  |       </div>

and I get this exception:
 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/seam-booking].[Faces Servlet]] Servlet.service() for servlet Faces Servlet threw exception
  | 
  | java.lang.IllegalStateException: No application context active
  |         at org.jboss.seam.Component.forName(Component.java:1559)
  |         at org.jboss.seam.Component.getInstance(Component.java:1609)
  |         at org.jboss.seam.Component.getInstance(Component.java:1592)
  |         at org.jboss.seam.jsf.SeamVariableResolver.resolveVariable(SeamVariableResolver.java:46)
  |         at org.apache.myfaces.config.LastVariableResolverInChain.resolveVariable(LastVariableResolverInChain.java:42)
  |         at com.sun.facelets.el.LegacyELContext$LegacyELResolver.getValue(LegacyELContext.java:134)
  |         at com.sun.el.parser.AstIdentifier.getValue(AstIdentifier.java:65)
  |        at com.sun.el.parser.AstValue.getTarget(AstValue.java:62)
  |         at com.sun.el.parser.AstValue.invoke(AstValue.java:147)
  |         at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:283)
  |         at com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
  |         at com.sun.facelets.el.LegacyMethodBinding.invoke(LegacyMethodBinding.java:69)
  |         at org.ajax4jsf.framework.resource.UserResource.send(UserResource.java:92)
  |         at org.ajax4jsf.framework.resource.ResourceLifecycle.send(ResourceLifecycle.java:79)
  |         at org.ajax4jsf.framework.resource.InternetResourceService.sendResource(InternetResourceService.java:192)
  |         at org.ajax4jsf.framework.resource.InternetResourceService.serviceResource(InternetResourceService.java:177)
  |         at org.ajax4jsf.framework.resource.InternetResourceService.serviceResource(InternetResourceService.java:97)
  |         at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:200)
  |         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  |         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
  |         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  |         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
  |         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
  |         at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
  |         at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
  |         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
  |         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
  |         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
  |         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
  |         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
  |         at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
  |         at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
  |         at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
  |         at java.lang.Thread.run(Thread.java:595)


Can someone help?

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