12:51 p.m.
NPE in Facelets if no redirect after file upload
------------------------------------------------
Key: JBSEAM-948
URL: http://jira.jboss.com/jira/browse/JBSEAM-948
Project: JBoss Seam
Issue Type: Bug
Components: JSF
Reporter: Christian Bauer
Assigned To: Shane Bryzak
This happens after a file upload action, if we don't redirect but render a page (the
seamspace demo is redirecting). It does not matter which page is rendered after the file
upload.
fileEdit.xhtml:
<h:form enctype="multipart/form-data">
<s:validateAll>
<s:decorate>
<div class="entry">
<div class="label">Name:</div>
<div class="input">
<h:inputText tabindex="1" size="80"
maxlength="255" id="name" required="true"
value="#{fileHome.instance.name}"/>
</div>
</div>
</s:decorate>
<s:decorate>
<div class="entry">
<div class="label">Upload:</div>
<div class="input">
<s:fileUpload
data="#{fileHome.instance.data}"
contentType="#{fileHome.instance.contentType}"
fileName="#{fileHome.instance.filename}"
fileSize="#{fileHome.instance.filesize}"/>
</div>
</div>
</s:decorate>
...
FileHome is just a Home<File> subclass, nothing interesting. When I submit this
form, the upload is done and the home.persist() method completes OK (I have everything in
the database). The render response, which is fileEdit.xhtml again, fails with this:
java.lang.NullPointerException
at com.sun.facelets.util.DevTools.writeVariables(DevTools.java:168)
at com.sun.facelets.util.DevTools.writeVariables(DevTools.java:144)
at com.sun.facelets.util.DevTools.debugHtml(DevTools.java:109)
at
com.sun.facelets.FaceletViewHandler.handleRenderException(FaceletViewHandler.java:671)
at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:639)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:384)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:138)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:130)
at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:107)
at
org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:78)
at
org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:383)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:63)
at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:57)
at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:74)
at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
at org.jboss.seam.web.SeamFilter.doFilter(SeamFilter.java:84)
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.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
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.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
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:613)
Looks like there is a problem rendering the view and then an NPE in Facelets which hides
the error.
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