scaffolding not working as expected

**solid** · Nov 2nd, 2009, 05:07 PM

I am having trouble with the roo scaffolding. I created my entities and configured the datasource in the persistence.xml and the database.properties. Then I used the controller all provided by roo.
Then I updated the entities.
Roo looks like it updated the scaffolding but When I tried to run it in eclipse for the first time, I got the the stack trace below. I checked the src/main/webapp/WEB-INF/tags directory and the files definitely are there so I am a little confused about what could be causing this.

Stacktrace:
SEVERE: Servlet.service() for servlet jsp threw exception
org.apache.jasper.JasperException: File "/WEB-INF/tags/language.tagx" not found
at org.apache.jasper.compiler.DefaultErrorHandler.jsp Error(DefaultErrorHandler.java:51)
at org.apache.jasper.compiler.ErrorDispatcher.dispatc h(ErrorDispatcher.java:409)
at org.apache.jasper.compiler.ErrorDispatcher.jspErro r(ErrorDispatcher.java:116)
at org.apache.jasper.compiler.JspUtil.getInputStream( JspUtil.java:849)
at
<Abriviated for length>
... 33 more
Caused by: java.lang.ClassNotFoundException: org.apache.jsp.WEB_002dINF.layouts.default_jspx
at java.net.URLClassLoader$1.run(URLClassLoader.java: 200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.j ava:188)
at org.apache.jasper.servlet.JasperLoader.loadClass(J asperLoader.java:134)
at org.apache.jasper.servlet.JasperLoader.loadClass(J asperLoader.java:66)
at org.apache.jasper.JspCompilationContext.load(JspCo mpilationContext.java:618)
... 45 more

**solid** · Nov 2nd, 2009, 05:29 PM

OK after digging some more and hacking on the scaffolding I found the source of the problem but I don't yet know the solution. The roo tag files are not being found.

My html markup begins as such:
<html
xmlns:jsp="http://java.sun.com/JSP/Page"
xmlns:c="http://java.sun.com/jsp/jstl/core"
xmlns:tiles="http://tiles.apache.org/tags-tiles"
xmlns:form="http://www.springframework.org/tags/form"
xmlns:spring="http://www.springframework.org/tags"
xmlns:roo="urn:jsptagdir:/WEB-INF/tags" >
...
<roo:language />
<roo:theme />
...

No page in the scaffolding works if it depends on the roo tags. If I comment out all tags with the roo namespace, everything works fine. Are there any ideas how to fix this?

**Stefan Schmidt** · Nov 2nd, 2009, 06:05 PM

Hi,

Roo will copy its tags (currently three: pagination.tagx, language.tagx and theme.tagx into src/main/webapp/WEB-INF/tags when the first controller is created. Somehow this did not happen for you.

To get some more information on this can you share what exactly you did? For example you could share the script (commands) that you issued when creating the project. Also, did you start your application with a previous version of roo and just recently 'upgraded' to a newer version? Any details to get this resolved are appreciated.

Cheers,
-Stefan

**solid** · Nov 2nd, 2009, 08:48 PM

Actually the tagx files are there. For some reason they just aren't being found. I tried it with a brand new project on a different os and here are the steps to reproduce. Using roo 1.0.0.RC2 [rev 321] :

roo> project --topLevelPackage p1
roo> persistence setup --provider HIBERNATE --database HYPERSONIC_IN_MEMORY
roo> entity --name ~.domain.Ent1
roo> field string fld1
roo> field string fld2
roo> field string fld3
roo> controller all --package
roo> quit
#> mvn eclipse:eclipse

import the existing project then add the project to a tomcat server (6.0.20) and start it
navigate to http://localhost:8080/test/
and you should see:
type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.tiles.impl.CannotRenderException: ServletException including path '/WEB-INF/layouts/default.jspx'.
org.apache.tiles.impl.BasicTilesContainer.render(B asicTilesContainer.java:691)
org.apache.tiles.impl.BasicTilesContainer.render(B asicTilesContainer.java:643)
org.apache.tiles.impl.BasicTilesContainer.render(B asicTilesContainer.java:626)
org.apache.tiles.impl.BasicTilesContainer.render(B asicTilesContainer.java:322)
org.springframework.web.servlet.view.tiles2.TilesV iew.renderMergedOutputModel(TilesView.java:100)
org.springframework.web.servlet.view.AbstractView. render(AbstractView.java:250)
org.springframework.web.servlet.DispatcherServlet. render(DispatcherServlet.java:1072)
org.springframework.web.servlet.DispatcherServlet. doDispatch(DispatcherServlet.java:808)
org.springframework.web.servlet.DispatcherServlet. doService(DispatcherServlet.java:726)
org.springframework.web.servlet.FrameworkServlet.p rocessRequest(FrameworkServlet.java:636)
org.springframework.web.servlet.FrameworkServlet.d oGet(FrameworkServlet.java:545)
javax.servlet.http.HttpServlet.service(HttpServlet .java:617)
javax.servlet.http.HttpServlet.service(HttpServlet .java:717)
org.tuckey.web.filters.urlrewrite.NormalRewrittenU rl.doRewrite(NormalRewrittenUrl.java:195)
org.tuckey.web.filters.urlrewrite.RuleChain.handle Rewrite(RuleChain.java:159)
org.tuckey.web.filters.urlrewrite.RuleChain.doRule s(RuleChain.java:141)
org.tuckey.web.filters.urlrewrite.UrlRewriter.proc essRequest(UrlRewriter.java:90)
org.tuckey.web.filters.urlrewrite.UrlRewriteFilter .doFilter(UrlRewriteFilter.java:417)
org.springframework.web.filter.HiddenHttpMethodFil ter.doFilterInternal(HiddenHttpMethodFilter.java:7 1)
org.springframework.web.filter.OncePerRequestFilte r.doFilter(OncePerRequestFilter.java:76)
org.springframework.web.filter.CharacterEncodingFi lter.doFilterInternal(CharacterEncodingFilter.java :88)
org.springframework.web.filter.OncePerRequestFilte r.doFilter(OncePerRequestFilter.java:76)
org.springframework.web.filter.ShallowEtagHeaderFi lter.doFilterInternal(ShallowEtagHeaderFilter.java :57)
org.springframework.web.filter.OncePerRequestFilte r.doFilter(OncePerRequestFilter.java:76)
org.springframework.orm.jpa.support.OpenEntityMana gerInViewFilter.doFilterInternal(OpenEntityManager InViewFilter.java:113)
org.springframework.web.filter.OncePerRequestFilte r.doFilter(OncePerRequestFilter.java:76)

root cause

org.apache.tiles.util.TilesIOException: ServletException including path '/WEB-INF/layouts/default.jspx'.
org.apache.tiles.servlet.context.ServletUtil.wrapS ervletException(ServletUtil.java:232)

the tagx files and jspx files are where they should be but tomcat is still complaining.

**solid** · Nov 2nd, 2009, 08:58 PM

corrections:

the url should be
http://localhost:8080/p1

the controller scaffolding should be
roo> controller all --package ~.controller

**Stefan Schmidt** · Nov 2nd, 2009, 09:09 PM

Thanks for providing the script. It looks pretty basic and I have just run this on my machine with Roo RC2 and had no problems at all.

What concerns me is the TilesIOException which indicates that tiles can actually not read the template and possibly other resources. Can you please check file permissions of all artifacts in your project? Also, is there any chance that you are running out of disk space? It appears this is a problem with your file system rather than a Roo application bug... What OS are you running?

Sorry I cannot be of more help but it is hard to help with a problem that cannot be reproduced

.

Cheers,
Stefan

**solid** · Nov 2nd, 2009, 09:14 PM

disk space issues on 2 separate machines? I don't think so. I am wondering about classpath issues. How does tiles locate the tagx files? via the classpath? Can you post your dependencies/versions?

**Stefan Schmidt** · Nov 2nd, 2009, 09:42 PM

Tiles does not deal directly with tag libraries. They are included via standard jsp includes:

Code:

xmlns:roo="urn:jsptagdir:/WEB-INF/tags"

It just happens that these tags are included in the tiles default template.

I have tiles 2.1.3 and JSP taglibs 1.1.2 in my classpath, just as defined in the projects pom.xml. We should definitely both have the same classpath given that Roo RC2 should produce the exact same pom for our projects... So unless something went wrong when maven downloaded the dependencies (maybe an incomplete / corrupted dependency?). Would it be possible for you to delete (backup beforehand) your .m2 directory so you can trigger an fresh download of the dependencies? Use mvn tomcat:run which should take care of pulling in all dependencies and starting your server.

Cheers,
Stefan

**solid** · Nov 2nd, 2009, 09:56 PM

I ran it via mvn jetty:run and it worked fine. I ran it via mvn tomcat:run and it just hangs after
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building p1
[INFO] task-segment: [tomcat:run]
[INFO] ------------------------------------------------------------------------
[INFO] Preparing tomcat:run
[INFO] [aspectj:compile {execution: default}]
[INFO] [resources:resources]
[INFO] Using default encoding to copy filtered resources.
[INFO] [compiler:compile]
[INFO] Nothing to compile - all classes are up to date
[INFO] [tomcat:run]
[INFO] Creating Tomcat server configuration at /home/solid/src/java/appengine/p1/target/tomcat
[INFO] Starting tomcat server
[INFO] Starting Servlet Engine: Apache Tomcat/5.5.15
[INFO] XML validation disabled
[INFO] Initializing Spring root WebApplicationContext
log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).
log4j:WARN Please initialize the log4j system properly.
[INFO] org.tuckey.web.filters.urlrewrite.UrlRewriteFilter INFO: loaded (conf ok)
[INFO] Initializing Coyote HTTP/1.1 on http-8080
[INFO] Starting Coyote HTTP/1.1 on http-8080

It has been hanging here for about 5 minutes. it Is not responding to web requests either.

**solid** · Nov 3rd, 2009, 09:41 AM

I deleted my m2 repo and re-eclipsed the project so that it would force a download all the dependencies fresh.
Same results.

Could it be that the spring repo is messed up and you are using an older (working) copy of some jar? Could you try the same process. backup the m2 repo and reclipse the project to run inside eclipse's tomcat ?

Thread: scaffolding not working as expected

Thread Tools

Display

scaffolding not working as expected

hint

Posting Permissions