Re: [Tiles] Forwarding To JSP Error Page From Within Tiles (Help!)
Not the tiles:insert commands, but the actual code it was inserting. For example, for the following base tile layout In the resultant HTML page, I would get whatever is the result of the tiles:insert tag, before the the rest of the html. This is on the Sun One Application server. I would be very interested in finding out if this behaviour doesn't occur on other servlet containers .. The buffer size is set on the Jsp page page directive, viz: <%@ page contentType="text/html;charset=iso-8859-1" language="java" errorPage="/framework/SystemError.jsp" buffer="32kb" autoFlush="false"%> Roy. Hohlen, John C wrote: Roy, Your suggestions worked for me. Thanks a lot. Where do you set the buffer size larger than 8K? I wasn't having any problems with "tiles:insert" commands appearing in the HTML. I'm using WebLogic if it makes any difference. JOHN -Original Message- From: Roy Porter [mailto:[EMAIL PROTECTED]] Sent: Friday, June 06, 2003 10:13 AM To: Struts Users Mailing List Subject: Re: [Tiles] Forwarding To JSP Error Page From Within Tiles (Help!) See my other post title 'Tiles Problem'. I've been pulling my hair out over this issue today. I've got as far as getting it to work - sort of . If you set the flush attribute to false on all your tiles:insert commands, and also set the autoFlush to false on your JSP Page directives (you may also need to set the buffer attribute to something larger than the standard 8kb), then the forwarding to the error page works . however . the tiles:insert commands puts the inserted code at the top of the resulting html, it seems that JspWriter needs to be flushed so that the inserted tile will appear at the right place . I have tried a number of things to use as a workaround, but without any success as yet. Roy. David Graham wrote: I'm also interested in any good ideas on this topic. I didn't spend enough time on this to know I had exhausted all possibilities. I just made my error page a very simple "An error occurred" statement so that it wouldn't look ugly when included as part of many tiles. I figured that exceptions wouldn't happen too often at the JSP layer because it has no logic in it and since I log all these exceptions I can make sure they're fixed and the user will never see my error page anyways. However, it would be nice to get a better solution. David This is a continuation of a post I submitted yesterday as an "off topic" subject entiled: "[OT] web.xml configuration problem" (Special thanks to David Graham for his many replies): Currently, this isn't showing up in the archives so I couldn't provide a link. However, I feel this is no longer an "off topic", but rather a Tiles/JSP topic. The issue I'm facing is how to forward to an error page (JSP) when a runtime exception (e.g. NullPointerException) occurs within my JSP Tile. Currently, I've added the following directive to each of my JSPs: <%@ page errorPage="/jsp/error.jsp" %> I'd prefer to only specify this information in one place, but I can't figure out how to do that either. The "" setting in the web.xml doesn't appear to work for JSPs, just regular Java code inside the web container. Now, when an exception occurs in a Tile JSP, my error screen is displayed, but it's inserted into the page with all the other Tiles displayed as well. This can look really ugly depending on which Tile the exception occurs in. What I would I would prefer to do is automatically forward to a brand new screen. David Graham gave me the idea of redirecting to a Struts action: <%@ page errorPage="/displaySystemError.do" %> But this causes the following exception: java.lang.IllegalStateException: Cannot forward a response that is already committed I think that makes since b/c of the other Tiles (JSP Servlets) that have already been processed and committed HTML to the output writer. So I'm stumped at this point. Please reply if anyone has any bright ideas. Thanks, JOHN - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] _ STOP MORE SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] smime.p7s Description: S/MIME Cryptographic Signature
RE: [Tiles] Forwarding To JSP Error Page From Within Tiles (Help!)
Roy, Your suggestions worked for me. Thanks a lot. Where do you set the buffer size larger than 8K? I wasn't having any problems with "tiles:insert" commands appearing in the HTML. I'm using WebLogic if it makes any difference. JOHN -Original Message- From: Roy Porter [mailto:[EMAIL PROTECTED] Sent: Friday, June 06, 2003 10:13 AM To: Struts Users Mailing List Subject: Re: [Tiles] Forwarding To JSP Error Page From Within Tiles (Help!) See my other post title 'Tiles Problem'. I've been pulling my hair out over this issue today. I've got as far as getting it to work - sort of . If you set the flush attribute to false on all your tiles:insert commands, and also set the autoFlush to false on your JSP Page directives (you may also need to set the buffer attribute to something larger than the standard 8kb), then the forwarding to the error page works . however . the tiles:insert commands puts the inserted code at the top of the resulting html, it seems that JspWriter needs to be flushed so that the inserted tile will appear at the right place . I have tried a number of things to use as a workaround, but without any success as yet. Roy. David Graham wrote: > I'm also interested in any good ideas on this topic. I didn't spend > enough time on this to know I had exhausted all possibilities. I just > made my error page a very simple "An error occurred" statement so that > it wouldn't look ugly when included as part of many tiles. > > I figured that exceptions wouldn't happen too often at the JSP layer > because it has no logic in it and since I log all these exceptions I > can make sure they're fixed and the user will never see my error page > anyways. However, it would be nice to get a better solution. > > David > >> This is a continuation of a post I submitted yesterday as an "off topic" >> subject entiled: >> >> "[OT] web.xml configuration problem" (Special thanks >> to David >> Graham for his many replies): >> >> Currently, this isn't showing up in the archives so I couldn't provide a >> link. However, I feel this is no longer an "off topic", but rather a >> Tiles/JSP topic. The issue I'm facing is how to forward to an error >> page >> (JSP) when a runtime exception (e.g. NullPointerException) occurs >> within my >> JSP Tile. Currently, I've added the following directive to each of >> my JSPs: >> >> <%@ page errorPage="/jsp/error.jsp" %> >> >> I'd prefer to only specify this information in one place, but I can't >> figure >> out how to do that either. The "" setting in the web.xml >> doesn't appear to work for JSPs, just regular Java code inside the web >> container. Now, when an exception occurs in a Tile JSP, my error >> screen is >> displayed, but it's inserted into the page with all the other Tiles >> displayed as well. This can look really ugly depending on which Tile >> the >> exception occurs in. What I would I would prefer to do is automatically >> forward to a brand new screen. David Graham gave me the idea of >> redirecting >> to a Struts action: >> >> <%@ page errorPage="/displaySystemError.do" %> >> >> But this causes the following exception: >> >> java.lang.IllegalStateException: Cannot forward a response that is >> already >> committed >> >> I think that makes since b/c of the other Tiles (JSP Servlets) that have >> already been processed and committed HTML to the output writer. So I'm >> stumped at this point. Please reply if anyone has any bright ideas. >> >> Thanks, >> >> JOHN >> >> >> - >> To unsubscribe, e-mail: [EMAIL PROTECTED] >> For additional commands, e-mail: [EMAIL PROTECTED] >> > > _ > STOP MORE SPAM with the new MSN 8 and get 2 months FREE* > http://join.msn.com/?page=features/junkmail > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: [Tiles] Forwarding To JSP Error Page From Within Tiles (Help! )
You could write a servlet Filter that will buffer the output, and after the tiles execute the filter will determine whether to send the output to the client. If the filter determines that an error occurred then is can forward to the displaySystemError.do. You will have to write a HttpResponseWrapper and pass that through the FilterChain. This is not recommended if you have large HTML pages because every request you will have at some point the entire page in memory. -james On Fri, 2003-06-06 at 09:23, Hohlen, John C wrote: > The "clearBuffer()" method didn't affect anything. The error page was still > surrounded by all the other Tiles being rendered. I then tried "clear()" > and it caused the following exception: > > java.lang.IllegalStateException: response already committed at > weblogic.servlet.jsp.JspWriterImpl.clear(JspWriterImpl.java:35) > > That's pretty much in-line with expectations according to documentation on > "JSPInsider.com": > > clear() > This method clears the ENTIRE content of the current buffer. If the buffer > has been already been flushed then the clear operation throws an IOException > error since the page's data has already been irrevocably written to the > client response stream. Also when not using buffering calling this method > will throw an IOException error. > > clearBuffer() > Clears the current contents of the buffer. This function will not return an > exception if the buffer has already been flushed. > > So I'm still stumped. The behavior I'm looking for may not be possible. > > JOHN > > -Original Message----- > From: Mike Jasnowski [mailto:[EMAIL PROTECTED] > Sent: Friday, June 06, 2003 9:56 AM > To: Struts Users Mailing List > Subject: RE: [Tiles] Forwarding To JSP Error Page From Within Tiles > (Help!) > > > You might try buffering the output of your pages, so they aren't committed. > But not sure that's the ideal solution. Another possibility is on the > error.jsp, you can programmatically clear the output writer of any content > it may have already buffered, then write out the stuff in your error.jsp you > want to display. > > out.clearBuffer(); > > There might be other solutions though. > > HTH, > Mike > > -Original Message- > From: Hohlen, John C [mailto:[EMAIL PROTECTED] > Sent: Friday, June 06, 2003 10:47 AM > To: Struts-User (E-mail) > Subject: [Tiles] Forwarding To JSP Error Page From Within Tiles (Help!) > > > This is a continuation of a post I submitted yesterday as an "off topic" > subject entiled: > > "[OT] web.xml configuration problem" (Special thanks to David > Graham for his many replies): > > Currently, this isn't showing up in the archives so I couldn't provide a > link. However, I feel this is no longer an "off topic", but rather a > Tiles/JSP topic. The issue I'm facing is how to forward to an error page > (JSP) when a runtime exception (e.g. NullPointerException) occurs within my > JSP Tile. Currently, I've added the following directive to each of my JSPs: > > <%@ page errorPage="/jsp/error.jsp" %> > > I'd prefer to only specify this information in one place, but I can't figure > out how to do that either. The "" setting in the web.xml > doesn't appear to work for JSPs, just regular Java code inside the web > container. Now, when an exception occurs in a Tile JSP, my error screen is > displayed, but it's inserted into the page with all the other Tiles > displayed as well. This can look really ugly depending on which Tile the > exception occurs in. What I would I would prefer to do is automatically > forward to a brand new screen. David Graham gave me the idea of redirecting > to a Struts action: > > <%@ page errorPage="/displaySystemError.do" %> > > But this causes the following exception: > > java.lang.IllegalStateException: Cannot forward a response that is already > committed > > I think that makes since b/c of the other Tiles (JSP Servlets) that have > already been processed and committed HTML to the output writer. So I'm > stumped at this point. Please reply if anyone has any bright ideas. > > Thanks, > > JOHN > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: [Tiles] Forwarding To JSP Error Page From Within Tiles (Help!)
The "clearBuffer()" method didn't affect anything. The error page was still surrounded by all the other Tiles being rendered. I then tried "clear()" and it caused the following exception: java.lang.IllegalStateException: response already committed at weblogic.servlet.jsp.JspWriterImpl.clear(JspWriterImpl.java:35) That's pretty much in-line with expectations according to documentation on "JSPInsider.com": clear() This method clears the ENTIRE content of the current buffer. If the buffer has been already been flushed then the clear operation throws an IOException error since the page's data has already been irrevocably written to the client response stream. Also when not using buffering calling this method will throw an IOException error. clearBuffer() Clears the current contents of the buffer. This function will not return an exception if the buffer has already been flushed. So I'm still stumped. The behavior I'm looking for may not be possible. JOHN -Original Message- From: Mike Jasnowski [mailto:[EMAIL PROTECTED] Sent: Friday, June 06, 2003 9:56 AM To: Struts Users Mailing List Subject: RE: [Tiles] Forwarding To JSP Error Page From Within Tiles (Help!) You might try buffering the output of your pages, so they aren't committed. But not sure that's the ideal solution. Another possibility is on the error.jsp, you can programmatically clear the output writer of any content it may have already buffered, then write out the stuff in your error.jsp you want to display. out.clearBuffer(); There might be other solutions though. HTH, Mike -Original Message- From: Hohlen, John C [mailto:[EMAIL PROTECTED] Sent: Friday, June 06, 2003 10:47 AM To: Struts-User (E-mail) Subject: [Tiles] Forwarding To JSP Error Page From Within Tiles (Help!) This is a continuation of a post I submitted yesterday as an "off topic" subject entiled: "[OT] web.xml configuration problem" (Special thanks to David Graham for his many replies): Currently, this isn't showing up in the archives so I couldn't provide a link. However, I feel this is no longer an "off topic", but rather a Tiles/JSP topic. The issue I'm facing is how to forward to an error page (JSP) when a runtime exception (e.g. NullPointerException) occurs within my JSP Tile. Currently, I've added the following directive to each of my JSPs: <%@ page errorPage="/jsp/error.jsp" %> I'd prefer to only specify this information in one place, but I can't figure out how to do that either. The "" setting in the web.xml doesn't appear to work for JSPs, just regular Java code inside the web container. Now, when an exception occurs in a Tile JSP, my error screen is displayed, but it's inserted into the page with all the other Tiles displayed as well. This can look really ugly depending on which Tile the exception occurs in. What I would I would prefer to do is automatically forward to a brand new screen. David Graham gave me the idea of redirecting to a Struts action: <%@ page errorPage="/displaySystemError.do" %> But this causes the following exception: java.lang.IllegalStateException: Cannot forward a response that is already committed I think that makes since b/c of the other Tiles (JSP Servlets) that have already been processed and committed HTML to the output writer. So I'm stumped at this point. Please reply if anyone has any bright ideas. Thanks, JOHN - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [Tiles] Forwarding To JSP Error Page From Within Tiles (Help!)
See my other post title 'Tiles Problem'. I've been pulling my hair out over this issue today. I've got as far as getting it to work - sort of . If you set the flush attribute to false on all your tiles:insert commands, and also set the autoFlush to false on your JSP Page directives (you may also need to set the buffer attribute to something larger than the standard 8kb), then the forwarding to the error page works . however . the tiles:insert commands puts the inserted code at the top of the resulting html, it seems that JspWriter needs to be flushed so that the inserted tile will appear at the right place . I have tried a number of things to use as a workaround, but without any success as yet. Roy. David Graham wrote: I'm also interested in any good ideas on this topic. I didn't spend enough time on this to know I had exhausted all possibilities. I just made my error page a very simple "An error occurred" statement so that it wouldn't look ugly when included as part of many tiles. I figured that exceptions wouldn't happen too often at the JSP layer because it has no logic in it and since I log all these exceptions I can make sure they're fixed and the user will never see my error page anyways. However, it would be nice to get a better solution. David This is a continuation of a post I submitted yesterday as an "off topic" subject entiled: "[OT] web.xml configuration problem" (Special thanks to David Graham for his many replies): Currently, this isn't showing up in the archives so I couldn't provide a link. However, I feel this is no longer an "off topic", but rather a Tiles/JSP topic. The issue I'm facing is how to forward to an error page (JSP) when a runtime exception (e.g. NullPointerException) occurs within my JSP Tile. Currently, I've added the following directive to each of my JSPs: <%@ page errorPage="/jsp/error.jsp" %> I'd prefer to only specify this information in one place, but I can't figure out how to do that either. The "" setting in the web.xml doesn't appear to work for JSPs, just regular Java code inside the web container. Now, when an exception occurs in a Tile JSP, my error screen is displayed, but it's inserted into the page with all the other Tiles displayed as well. This can look really ugly depending on which Tile the exception occurs in. What I would I would prefer to do is automatically forward to a brand new screen. David Graham gave me the idea of redirecting to a Struts action: <%@ page errorPage="/displaySystemError.do" %> But this causes the following exception: java.lang.IllegalStateException: Cannot forward a response that is already committed I think that makes since b/c of the other Tiles (JSP Servlets) that have already been processed and committed HTML to the output writer. So I'm stumped at this point. Please reply if anyone has any bright ideas. Thanks, JOHN - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] _ STOP MORE SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] smime.p7s Description: S/MIME Cryptographic Signature
Re: [Tiles] Forwarding To JSP Error Page From Within Tiles (Help!)
It's a hack, but the action "displaySystemError.do" could send some javascript that when loaded will send the browser window to a specified error page. window.location="http://www.google.com";; On Fri, 2003-06-06 at 08:46, Hohlen, John C wrote: > This is a continuation of a post I submitted yesterday as an "off topic" > subject entiled: > > "[OT] web.xml configuration problem" (Special thanks to David > Graham for his many replies): > > Currently, this isn't showing up in the archives so I couldn't provide a > link. However, I feel this is no longer an "off topic", but rather a > Tiles/JSP topic. The issue I'm facing is how to forward to an error page > (JSP) when a runtime exception (e.g. NullPointerException) occurs within my > JSP Tile. Currently, I've added the following directive to each of my JSPs: > > <%@ page errorPage="/jsp/error.jsp" %> > > I'd prefer to only specify this information in one place, but I can't figure > out how to do that either. The "" setting in the web.xml > doesn't appear to work for JSPs, just regular Java code inside the web > container. Now, when an exception occurs in a Tile JSP, my error screen is > displayed, but it's inserted into the page with all the other Tiles > displayed as well. This can look really ugly depending on which Tile the > exception occurs in. What I would I would prefer to do is automatically > forward to a brand new screen. David Graham gave me the idea of redirecting > to a Struts action: > > <%@ page errorPage="/displaySystemError.do" %> > > But this causes the following exception: > > java.lang.IllegalStateException: Cannot forward a response that is already > committed > > I think that makes since b/c of the other Tiles (JSP Servlets) that have > already been processed and committed HTML to the output writer. So I'm > stumped at this point. Please reply if anyone has any bright ideas. > > Thanks, > > JOHN > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: [Tiles] Forwarding To JSP Error Page From Within Tiles (Help!)
You might try buffering the output of your pages, so they aren't committed. But not sure that's the ideal solution. Another possibility is on the error.jsp, you can programmatically clear the output writer of any content it may have already buffered, then write out the stuff in your error.jsp you want to display. out.clearBuffer(); There might be other solutions though. HTH, Mike -Original Message- From: Hohlen, John C [mailto:[EMAIL PROTECTED] Sent: Friday, June 06, 2003 10:47 AM To: Struts-User (E-mail) Subject: [Tiles] Forwarding To JSP Error Page From Within Tiles (Help!) This is a continuation of a post I submitted yesterday as an "off topic" subject entiled: "[OT] web.xml configuration problem" (Special thanks to David Graham for his many replies): Currently, this isn't showing up in the archives so I couldn't provide a link. However, I feel this is no longer an "off topic", but rather a Tiles/JSP topic. The issue I'm facing is how to forward to an error page (JSP) when a runtime exception (e.g. NullPointerException) occurs within my JSP Tile. Currently, I've added the following directive to each of my JSPs: <%@ page errorPage="/jsp/error.jsp" %> I'd prefer to only specify this information in one place, but I can't figure out how to do that either. The "" setting in the web.xml doesn't appear to work for JSPs, just regular Java code inside the web container. Now, when an exception occurs in a Tile JSP, my error screen is displayed, but it's inserted into the page with all the other Tiles displayed as well. This can look really ugly depending on which Tile the exception occurs in. What I would I would prefer to do is automatically forward to a brand new screen. David Graham gave me the idea of redirecting to a Struts action: <%@ page errorPage="/displaySystemError.do" %> But this causes the following exception: java.lang.IllegalStateException: Cannot forward a response that is already committed I think that makes since b/c of the other Tiles (JSP Servlets) that have already been processed and committed HTML to the output writer. So I'm stumped at this point. Please reply if anyone has any bright ideas. Thanks, JOHN - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [Tiles] Forwarding To JSP Error Page From Within Tiles (Help!)
I'm also interested in any good ideas on this topic. I didn't spend enough time on this to know I had exhausted all possibilities. I just made my error page a very simple "An error occurred" statement so that it wouldn't look ugly when included as part of many tiles. I figured that exceptions wouldn't happen too often at the JSP layer because it has no logic in it and since I log all these exceptions I can make sure they're fixed and the user will never see my error page anyways. However, it would be nice to get a better solution. David This is a continuation of a post I submitted yesterday as an "off topic" subject entiled: "[OT] web.xml configuration problem" (Special thanks to David Graham for his many replies): Currently, this isn't showing up in the archives so I couldn't provide a link. However, I feel this is no longer an "off topic", but rather a Tiles/JSP topic. The issue I'm facing is how to forward to an error page (JSP) when a runtime exception (e.g. NullPointerException) occurs within my JSP Tile. Currently, I've added the following directive to each of my JSPs: <%@ page errorPage="/jsp/error.jsp" %> I'd prefer to only specify this information in one place, but I can't figure out how to do that either. The "" setting in the web.xml doesn't appear to work for JSPs, just regular Java code inside the web container. Now, when an exception occurs in a Tile JSP, my error screen is displayed, but it's inserted into the page with all the other Tiles displayed as well. This can look really ugly depending on which Tile the exception occurs in. What I would I would prefer to do is automatically forward to a brand new screen. David Graham gave me the idea of redirecting to a Struts action: <%@ page errorPage="/displaySystemError.do" %> But this causes the following exception: java.lang.IllegalStateException: Cannot forward a response that is already committed I think that makes since b/c of the other Tiles (JSP Servlets) that have already been processed and committed HTML to the output writer. So I'm stumped at this point. Please reply if anyone has any bright ideas. Thanks, JOHN - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] _ STOP MORE SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
