Hi everyone,
For various reasons (that are good enough for our team ;) ) we have to
make use of a sendRedirect to forward to an offsite url. This works fine
when I do so from an event, such as
@OnEvent(value=EventConstants.SUCCESS) but throws a NPE when attempting
to do so from any phase of the render-request :(
Even the onActivate() counts as one of the phases for which it fails
unfortunately. I can redirect inside T5 just fine, using the obvious
method of returning a Class or Link, but I need to be able to redirect
off-site as well! As a results my post has two goals:
1) I want to establish if this problem is a bug and if so should I
report it, or is it already reported (I could not find it in Jira).
2) Can anybody come up with a work-around for this bug. The behaviour I
need is that a user-request to 'a page' causes the page to redirect to
an external url, without user interaction. (Currently I have a form with
hidden input containing pertinent information, and the user needs to
click the form-button).
Some additional technical information:
- I am using Tapestry 5.1.0.5
- This is the start if the stacktrace root-cause:
12-Oct-2009 11:25:43 org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet default threw exception
java.lang.NullPointerException
at
org.apache.tapestry5.internal.services.ResponseCompressionAnalyzerImpl.isCompressable(ResponseCompressionAnalyzerImpl.java:65)
at
$ResponseCompressionAnalyzer_12448028aeb.isCompressable($ResponseCompressionAnalyzer_12448028aeb.java)
at
org.apache.tapestry5.internal.gzip.BufferedGZipOutputStream.openResponseOutputStream(BufferedGZipOutputStream.java:77)
at
org.apache.tapestry5.internal.gzip.BufferedGZipOutputStream.checkForCutover(BufferedGZipOutputStream.java:70)
at
org.apache.tapestry5.internal.gzip.BufferedGZipOutputStream.write(BufferedGZipOutputStream.java:116)
at sun.nio.cs.StreamEncoder$CharsetSE.writeBytes(StreamEncoder.java:336)
at sun.nio.cs.StreamEncoder$CharsetSE.implWrite(StreamEncoder.java:395)
at sun.nio.cs.StreamEncoder.write(StreamEncoder.java:136)
at java.io.OutputStreamWriter.write(OutputStreamWriter.java:191)
at java.io.BufferedWriter.flushBuffer(BufferedWriter.java:111)
at java.io.BufferedWriter.write(BufferedWriter.java:212)
at java.io.PrintWriter.write(PrintWriter.java:384)
at java.io.PrintWriter.write(PrintWriter.java:401)
at java.io.PrintWriter.print(PrintWriter.java:532)
at org.apache.tapestry5.dom.Element.toMarkup(Element.java:367)
at org.apache.tapestry5.dom.Element.writeChildMarkup(Element.java:840)
at org.apache.tapestry5.dom.Element.toMarkup(Element.java:356)
at org.apache.tapestry5.dom.Element.writeChildMarkup(Element.java:840)
at org.apache.tapestry5.dom.Element.toMarkup(Element.java:356)
at org.apache.tapestry5.dom.Element.writeChildMarkup(Element.java:840)
at org.apache.tapestry5.dom.Element.toMarkup(Element.java:356)
at org.apache.tapestry5.dom.Document.toMarkup(Document.java:163)
at org.apache.tapestry5.dom.Node.toMarkup(Node.java:80)
at
org.apache.tapestry5.internal.services.MarkupWriterImpl.toMarkup(MarkupWriterImpl.java:57)
at
org.apache.tapestry5.internal.services.PageResponseRendererImpl.renderPageResponse(PageResponseRendererImpl.java:67)
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