Re: how to catch exception using tiles thrown by e.g. org.apache.struts.tiles.TilesUtilStrutsModulesImpl.doInclude

[Cedric Dumoulin]

Jörg Maurer wrote:

Cedric 
     

exactly as you said, <insert> is used. despite the big try-catch block
approach, its unclear to me why error-page in web.xml doesn#t get a try.
Additionally i searched for similar behaviour and all i found was
following 
"page 52 of the JSP 1.2 spec : 
Note: if autoFlush=true then if the contents of the initial Jsp-
Writer has been flushed to the ServletResponse output stream
then any subsequent attempt to dispatch an uncaught
exception from the offending page to an errorPage may fail.
When an error page is also indicated in the web.xml
descriptor, the JSP error page applies first, then the web.xml
page.".

You as a more experienced one than myself, does it make some sense to
the issue?
 This make sense: Your page is made of several tiles. The first ones 
have already been compute, and so some outputs have been flushed. Then, 
one of the <insert ..> throw an exception. This exception is not catched 
by the jsp mechanism because the output stream has already been flushed ...

  Cedric

-----Original Message-----
From: Cedric Dumoulin [mailto:[EMAIL PROTECTED]
Sent: Dienstag, 04. März 2003 18:35
To: Struts Users Mailing List
Subject: Re: how to catch exception using tiles thrown by e.g.
org.apache.struts.tiles.TilesUtilStrutsModulesImpl.doInclude


 I suppose that your exception is thrown by a <tiles:insert ...> tag in

a jsp.
 This exception is thrown by the tiles framework, which know nothing 
about the struts exception mechanism, so it can't be used. The exception

is then propagated by the tag handler and reach the jsp page (the tile 
jsp). If there is an exception handler associated to the jsp, it is 
called, if there is no handler, the exception is propagated to parent 
page inserting this one. If the parent page have inserted the child page

with an <insert ...>, then the <insert> catch the exception and show it.

Normally, the jsp exception handling should work, but it appear that it 
is not always the case.

 A workaround is to put a big try/catch in the jsp throwing the 
exception ;-(. This will be improved in future versions.

    Cedric

Jörg Maurer wrote:

 

Hi struts people!

I have really defined everywhere i think i can put an exception handler
for servlet exception : 
1.) in my base layout.jsp an <%@
errorPage='/pages/common/error/errorsGeneralHandler.jsp'%>
2.) in struts config a global exception handler
       <global-exceptions>
        <exception 
          path="pages/common/error/errorsGeneralHandler.jsp"
          type="javax.servlet.ServletException"/>  
       </global-exceptions> 
3.) in web.xml
<error-page>
  <exception-type>javax.servlet.ServletException</exception-type>
  <location>/pages/common/error/errorsGeneralHandler.jsp</location>
</error-page>

Still ServletException slip through my guards. Last know point as stack
trace shows below is
org.apache.struts.tiles.TilesUtilStrutsModulesImpl.doInclude(TilesUtilS
   

t
 

rutsModulesImpl.java:122) , which throws ServletException but is never
catchable to me. The point is not the FileNotFound, which is pretty
clear to me, but why such exception doesn´t hit any of my error
   

handler.
 

Any hints appreciated!

2003-03-04 12:36:06 ApplicationDispatcher[] Servlet.service() for
servlet jsp threw exception
javax.servlet.ServletException: /pages/wf_category/pager_region.jsp
      at
org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet$JspServletWr
   

a
 

pper.service(IDEJspServlet.java:183)
      at
org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet.serviceJspFi
   

l
 

e(IDEJspServlet.java:246)
      at
org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet.service(IDEJ
   

s
 

pServlet.java:339)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
      at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispat
   

c
 

her.java:683)
      at
org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDis
   

p
 

atcher.java:574)
      at
org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispa
   

t
 

cher.java:497)
      at
org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.j
   

a
 

va:819)
      at
org.apache.jsp.wf_0005fcategory_0005fchoose$jsp._jspService(wf_0005fcat
   

e
 

gory_0005fchoose$jsp.java:107)
      at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
      at
org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet$JspServletWr
   

a
 

pper.service(IDEJspServlet.java:173)
      at
org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet.serviceJspFi
   

l
 

e(IDEJspServlet.java:246)
      at
org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet.service(IDEJ
   

s
 

pServlet.java:339)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
      at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispat
   

c
 

her.java:683)
      at
org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDis
   

p
 

atcher.java:574)
      at
org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispa
   

t
 

cher.java:497)
      at
org.apache.struts.tiles.TilesUtilStrutsModulesImpl.doInclude(TilesUtilS
   

t
 

rutsModulesImpl.java:122)
      at
org.apache.struts.tiles.TilesUtil.doInclude(TilesUtil.java:161)
      at
org.apache.struts.taglib.tiles.InsertTag.doInclude(InsertTag.java:703)
      at
org.apache.struts.taglib.tiles.InsertTag$InsertHandler.doEndTag(InsertT
   

a
 

g.java:818)
      at
org.apache.struts.taglib.tiles.InsertTag.doEndTag(InsertTag.java:467)
      at
org.apache.jsp.base_0005flayout$jsp._jspService(base_0005flayout$jsp.ja
   

v
 

a:1006)
      at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
      at
org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet$JspServletWr
   

a
 

pper.service(IDEJspServlet.java:173)
      at
org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet.serviceJspFi
   

l
 

e(IDEJspServlet.java:246)
      at
org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet.service(IDEJ
   

s
 

pServlet.java:339)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
      at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispat
   

c
 

her.java:683)
      at
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDis
   

p
 

atcher.java:431)
      at
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispa
   

t
 

cher.java:355)
      at
org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.ja
   

v
 

a:1033)
      at
org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestPro
   

c
 

essor.java:269)
      at
org.apache.struts.tiles.TilesRequestProcessor.processTilesDefinition(Ti
   

l
 

esRequestProcessor.java:249)
      at
org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(Tile
   

s
 

RequestProcessor.java:303)
      at
org.apache.struts.action.RequestProcessor.processActionForward(RequestP
   

r
 

ocessor.java:401)
      at
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java
   

:
 

279)
      at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1407)
      at
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:496)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
      at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applic
   

a
 

tionFilterChain.java:247)
      at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFil
   

t
 

erChain.java:193)
      at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperVal
   

v
 

e.java:243)
      at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.j
   

a
 

va:566)
      at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:
   

4
 

72)
      at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
      at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextVal
   

v
 

e.java:190)
      at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.j
   

a
 

va:566)
      at
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.j
   

a
 

va:246)
      at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.j
   

a
 

va:564)
      at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:
   

4
 

72)
      at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
      at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:23
   

4
 

7)
      at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.jav
   

a
 

:180)
      at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.j
   

a
 

va:566)
      at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherV
   

a
 

lve.java:170)
      at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.j
   

a
 

va:564)
      at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.jav
   

a
 

:170)
      at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.j
   

a
 

va:564)
      at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:46
   

8
 

)
      at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.j
   

a
 

va:564)
      at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:
   

4
 

72)
      at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
      at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve
   

.
 

java:174)
      at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.j
   

a
 

va:566)
      at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:
   

4
 

72)
      at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
      at
org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.
   

j
 

ava:1027)
      at
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java
   

:
 

1125)
      at java.lang.Thread.run(Thread.java:536)
----- Root Cause -----
java.io.FileNotFoundException: /pages/wf_category/pager_region.jsp
      at
org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet.loadJSP(IDEJ
   

s
 

pServlet.java:376)
      at
org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet$JspServletWr
   

a
 

pper.loadIfNecessary(IDEJspServlet.java:148)
      at
org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet$JspServletWr
   

a
 

pper.service(IDEJspServlet.java:160)
      at
org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet.serviceJspFi
   

l
 

e(IDEJspServlet.java:246)
      at
org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet.service(IDEJ
   

s
 

pServlet.java:339)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
      at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispat
   

c
 

her.java:683)
      at
org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDis
   

p
 

atcher.java:574)
      at
org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispa
   

t
 

cher.java:497)
      at
org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.j
   

a
 

va:819)
      at
org.apache.jsp.wf_0005fcategory_0005fchoose$jsp._jspService(wf_0005fcat
   

e
 

gory_0005fchoose$jsp.java:107)
      at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
      at
org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet$JspServletWr
   

a
 

pper.service(IDEJspServlet.java:173)
      at
org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet.serviceJspFi
   

l
 

e(IDEJspServlet.java:246)
      at
org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet.service(IDEJ
   

s
 

pServlet.java:339)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
      at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispat
   

c
 

her.java:683)
      at
org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDis
   

p
 

atcher.java:574)
      at
org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispa
   

t
 

cher.java:497)
      at
org.apache.struts.tiles.TilesUtilStrutsModulesImpl.doInclude(TilesUtilS
   

t
 

rutsModulesImpl.java:122)
      at
org.apache.struts.tiles.TilesUtil.doInclude(TilesUtil.java:161)
      at
org.apache.struts.taglib.tiles.InsertTag.doInclude(InsertTag.java:703)
      at
org.apache.struts.taglib.tiles.InsertTag$InsertHandler.doEndTag(InsertT
   

a
 

g.java:818)
      at
org.apache.struts.taglib.tiles.InsertTag.doEndTag(InsertTag.java:467)
      at
org.apache.jsp.base_0005flayout$jsp._jspService(base_0005flayout$jsp.ja
   

v
 

a:1006)
      at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
      at
org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet$JspServletWr
   

a
 

pper.service(IDEJspServlet.java:173)
      at
org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet.serviceJspFi
   

l
 

e(IDEJspServlet.java:246)
      at
org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet.service(IDEJ
   

s
 

pServlet.java:339)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
      at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispat
   

c
 

her.java:683)
      at
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDis
   

p
 

atcher.java:431)
      at
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispa
   

t
 

cher.java:355)
      at
org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.ja
   

v
 

a:1033)
      at
org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestPro
   

c
 

essor.java:269)
      at
org.apache.struts.tiles.TilesRequestProcessor.processTilesDefinition(Ti
   

l
 

esRequestProcessor.java:249)
      at
org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(Tile
   

s
 

RequestProcessor.java:303)
      at
org.apache.struts.action.RequestProcessor.processActionForward(RequestP
   

r
 

ocessor.java:401)
      at
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java
   

:
 

279)
      at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1407)
      at
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:496)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
      at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applic
   

a
 

tionFilterChain.java:247)
      at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFil
   

t
 

erChain.java:193)
      at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperVal
   

v
 

e.java:243)
      at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.j
   

a
 

va:566)
      at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:
   

4
 

72)
      at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
      at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextVal
   

v
 

e.java:190)
      at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.j
   

a
 

va:566)
      at
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.j
   

a
 

va:246)
      at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.j
   

a
 

va:564)
      at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:
   

4
 

72)
      at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
      at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:23
   

4
 

7)
      at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.jav
   

a
 

:180)
      at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.j
   

a
 

va:566)
      at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherV
   

a
 

lve.java:170)
      at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.j
   

a
 

va:564)
      at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.jav
   

a
 

:170)
      at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.j
   

a
 

va:564)
      at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:46
   

8
 

)
      at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.j
   

a
 

va:564)
      at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:
   

4
 

72)
      at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
      at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve
   

.
 

java:174)
      at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.j
   

a
 

va:566)
      at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:
   

4
 

72)
      at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
      at
org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.
   

j
 

ava:1027)
      at
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java
   

:
 

1125)
      at java.lang.Thread.run(Thread.java:536)
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