[jboss-user] [JBoss Seam] - Stupid ajax4jsf filter when downloading files

[franck93]

Hi,

I was trying to use a typical seam backing bean for handling a file download. So i used the many examples posted on this forum. sthg like :


  | @Stateful
  | @Scope(EVENT)
  | @Name("editWebdoc")
  | public class EditWebdocAction implements EditWebdoc {
  |    @In(required=true)
  |    private Client client;
  |    
  |    
  |    @In(required=false)
  |    private Webdoc webdoc;
  |    
  |    @In(value = "#{facesContext}")
  |    private FacesContext mFacesContext;
  | 
  | ....
  |    public void getDocFichier(Webdoc webdoc) {
  | 	   if (webdoc == null) {
  |            return;
  |        }
  |         byte[] data = webdoc.getDocFicData();
  | 		HttpServletResponse response = (HttpServletResponse) mFacesContext.getExternalContext().getResponse();
  | 		response.setContentType("application/pdf");
  | 		response.setContentLength(data.length);
  | 		response.addHeader("Content-disposition", "attachment; filename=\"" + webdoc.getDocFicNom() + "\"");
  | 		
  | 		try {
  | 		    ServletOutputStream responseOutputStream = response.getOutputStream();
  | 		    responseOutputStream.write(webdoc.getDocFicData());
  | 		    responseOutputStream.flush();
  | 		    responseOutputStream.close();
  | 		    mFacesContext.responseComplete();
  | 		    response.flushBuffer();
  | 		} catch (IOException ioe) {
  | 			log.error("IOException lors de la restitution du document webdoc", ioe);
  | 		}
  | 

AND

<s:fileUpload 	id="fichierPDF" 
  | 										data="#{webdoc.docFicData}" 
  |               						accept="application/PDF" 
  |               						contentType="#{editWebdoc.fichierContentType}"
  |               						fileName="#{webdoc.docFicNom}"
  |               						fileSize="#{editWebdoc.fichierTaille}"  />

But i kept getting the following error :






  | 
  | 17:35:40,872 ERROR [[Faces Servlet]] "Servlet.service()" pour la servlet Faces Servlet a généré une exception
  | java.lang.NullPointerException
  |         at java.util.regex.Matcher.getTextLength(Matcher.java:1127)
  |         at java.util.regex.Matcher.reset(Matcher.java:284)
  |         at java.util.regex.Matcher.<init>(Matcher.java:205)
  |         at java.util.regex.Pattern.matcher(Pattern.java:879)
  |         at org.ajax4jsf.webapp.ParserConfig.getParser(ParserConfig.java:28)
  |         at org.ajax4jsf.webapp.ConfigurableXMLFilter.getParser(ConfigurableXMLFilter.java:109)
  |         at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:259)
  |         at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
  |         at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
  |         at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
  |         at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
  |         at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
  |         at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:150)
  |         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
  |         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  |         at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
  |         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
  |         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  |         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
  |         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
  |         at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
  |         at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
  |         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
  |         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
  |         at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
  |         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
  |         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241)
  |         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
  |         at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:580)
  |         at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
  |         at java.lang.Thread.run(Thread.java:595)
  | 
  | 

So i thought it was this stupid ajax4jsf filter and i switched the force-parser attribute to false hence ending up to  this in components.xml :


  | 
  | 	<web:ajax4jsf-filter force-parser="true" 
  | 								enable-cache="true" 
  | 								log4j-init-file="custom-log4j.xml"
  | 								url-pattern="*.seam"/>
  | 
  | 

The pdf download now works, but of course the ajax validation w/ hibernate validator is not working in the other pages of my application.

Can't we have both ajax-hibernate validation AND download file functionnality within the same application?

Is there a way to bypass ajax filter for certain actions?



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