StreamResponse does not work on WebLogic - response not flushed, and secondary
exception raised
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Key: TAPESTRY-2415
URL: https://issues.apache.org/jira/browse/TAPESTRY-2415
Project: Tapestry
Issue Type: Bug
Components: tapestry-core
Affects Versions: 5.0.11, 5.0.12
Environment: WebLogic 9.2
Reporter: Philip Lopez
It seems that Jetty 6.x and WebLogic 9.2 differ in how they handle
ServletOutputStream.close().
Jetty will flush/commit the response at this point, whereas WebLogic does not
appear to. The result is that the (Tapestry) response is NOT committed when
ImmediateActionRenderResponseFilter checks it. As a result, the "Sanity check -
neither a stream response nor a redirect response was geenrated for this action
request." IllegalStateException is raised.
UNFORTUNATELY, the DefaultRequestExceptionHandler now kicks in and tries to
render a TapestryException page. This means that the Response.getWriter()
method is invoked, AFTER Response.getOutputStream() is invoked -- a state
deemed illegal by WebLogic (and the Servlet specification), so WebLogic raises
a secondary exception that obscures the actual cause (see below).
A FIX: add a call to os.flush() in
StreamResponseResultProcessor.processResultValue(..) just before os.close().
Not sure that there is a good solution to the secondary exception problem if
there's an exception during a StreamResponse, of trying to write an error page
-- using getWriter() -- when the output stream is already been written to,
presumably with a different contentType...
The secondary exception raised is...
java.lang.IllegalStateException: strict servlet API: cannot call getWriter()
after getOutputStream()
at
weblogic.servlet.internal.ServletResponseImpl.getWriter(ServletResponseImpl.java:286)
at
org.apache.tapestry.internal.services.ResponseImpl.getPrintWriter(ResponseImpl.java:47)
at
$Response_119dbc3d281.getPrintWriter($Response_119dbc3d281.java)
at
$Response_119dbc3d1c2.getPrintWriter($Response_119dbc3d1c2.java)
at
org.apache.tapestry.internal.services.PageResponseRendererImpl.renderPageResponse(PageResponseRendererImpl.java:59)
at
$PageResponseRenderer_119dbc3d1eb.renderPageResponse($PageResponseRenderer_119dbc3d1eb.java)
at
org.apache.tapestry.internal.services.DefaultRequestExceptionHandler.handleRequestException(DefaultRequestExceptionHandler.java:55)
at
$RequestExceptionHandler_119dbc3d1d7.handleRequestException($RequestExceptionHandler_119dbc3d1d7.java)
at
org.apache.tapestry.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:41)
at
$RequestHandler_119dbc3d1da.service($RequestHandler_119dbc3d1da.java)
at
org.apache.tapestry.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:79)
at
$RequestHandler_119dbc3d1da.service($RequestHandler_119dbc3d1da.java)
at
org.apache.tapestry.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:93)
at
org.apache.tapestry.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:84)
at
org.apache.tapestry.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:75)
at
org.apache.tapestry.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:106)
at
$RequestHandler_119dbc3d1da.service($RequestHandler_119dbc3d1da.java)
at
$RequestHandler_119dbc3d1d1.service($RequestHandler_119dbc3d1d1.java)
at
org.apache.tapestry.services.TapestryModule$11.service(TapestryModule.java:919)
at
org.apache.tapestry.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62)
at
$HttpServletRequestFilter_119dbc3d1d0.service($HttpServletRequestFilter_119dbc3d1d0.java)
at
$HttpServletRequestHandler_119dbc3d1d2.service($HttpServletRequestHandler_119dbc3d1d2.java)
at
$HttpServletRequestHandler_119dbc3d1cf.service($HttpServletRequestHandler_119dbc3d1cf.java)
at
org.apache.tapestry.TapestryFilter.doFilter(TapestryFilter.java:168)
at
weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at
weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3243)
at
weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at
weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at
weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2003)
at
weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:1909)
at
weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1359)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)
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