Comments on: Grails with ZK: Embedding ZUL in GSP

By: Felipe Cypriano

Felipe Cypriano — Mon, 17 May 2010 11:17:24 +0000

Try to use my code on GitHub and see differences between mine and yours.

By: budi

budi — Sun, 16 May 2010 14:39:38 +0000

Hello Felipe,

I try to follow your words when the bootstrap model I filled with some data and then all I run and look good but the data I entered does not appear. what wrong with it. i use grails 1.2.2 and zkplugin 0.7.8.

thanks.

By: Wellington

Wellington — Thu, 18 Feb 2010 01:50:31 +0000

Thanks for replying,

I think the following error is better to understand, this error is shown when I try to do a direct access to books/list.zul. When I try to access from books/list.gsp it seems that isn’t recognized. Thanks in advance.

ERROR org.zkoss – Failed to assign [model=] to
Unable to find a setter named model that supports
ERROR [/mobillonline].[zkLoader] – Servlet.service() for servlet zkLoader threw exception
java.lang.ClassCastException: Unable to find a setter named model that supports
at org.zkoss.zk.ui.metainfo.Property.assign0(Property.java:283)
at org.zkoss.zk.ui.metainfo.Property.assign(Property.java:173)
at org.zkoss.zk.ui.metainfo.ComponentInfo.applyProperties(ComponentInfo.java:804)
at org.zkoss.zk.ui.impl.AbstractUiFactory.newComponent(AbstractUiFactory.java:93)
at org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild0(UiEngineImpl.java:622)
at org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild(UiEngineImpl.java:593)
at org.zkoss.zk.ui.impl.UiEngineImpl.execCreate0(UiEngineImpl.java:537)
at org.zkoss.zk.ui.impl.UiEngineImpl.execCreate(UiEngineImpl.java:504)
at org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild0(UiEngineImpl.java:637)
at org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild(UiEngineImpl.java:593)
at org.zkoss.zk.ui.impl.UiEngineImpl.execCreate0(UiEngineImpl.java:537)
at org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild(UiEngineImpl.java:569)
at org.zkoss.zk.ui.impl.UiEngineImpl.execCreate0(UiEngineImpl.java:537)
at org.zkoss.zk.ui.impl.UiEngineImpl.execCreate(UiEngineImpl.java:504)
at org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage0(UiEngineImpl.java:365)
at org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage(UiEngineImpl.java:286)
at org.zkoss.zk.ui.http.DHtmlLayoutServlet.process(DHtmlLayoutServlet.java:237)
at org.zkoss.zk.ui.http.DHtmlLayoutServlet.doGet(DHtmlLayoutServlet.java:159)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.codehaus.groovy.grails.web.mapping.filter.UrlMappingsFilter.
processFilterChain(UrlMappingsFilter.java:282)
at org.codehaus.groovy.grails.web.mapping.filter.UrlMappingsFilter.doFilterInternal(UrlMappingsFilter.java:211)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.zkoss.zkgrails.ZKGrailsPageFilter.doFilter(ZKGrailsPageFilter.java:116)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.orm.hibernate3.support.
OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
at org.codehaus.groovy.grails.orm.hibernate.support.
GrailsOpenSessionInViewFilter.doFilterInternal(GrailsOpenSessionInViewFilter.java:64)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.codehaus.groovy.grails.web.servlet.mvc.
GrailsWebRequestFilter.doFilterInternal(GrailsWebRequestFilter.java:65)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.codehaus.groovy.grails.web.filters.
HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:66)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.web.filter.CharacterEncodingFilter.
doFilterInternal(CharacterEncodingFilter.java:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.springframework.web.filter.DelegatingFilterProxy.
invokeDelegate(DelegatingFilterProxy.java:237)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
at java.lang.Thread.run(Thread.java:595)

By: Felipe Cypriano

Felipe Cypriano — Wed, 17 Feb 2010 15:17:05 +0000

It doesn’t seem to be a ZK problem. In ‘mobillonline/grails-app/views/product/list.gsp’ file on line 7 you’re trying to access an element index that doesn’t exists in the array or list.

Read the error message you sent.

By: Wellington

Wellington — Fri, 12 Feb 2010 16:44:04 +0000

Hello Felipe,

I tried to run your example. Any idea about following error:

ERROR org.zkoss – Failed to assign [model=] to
Unable to find a setter named model that supports

ERROR view.GroovyPageView – Error processing GroovyPageView: Error executing tag : java.lang.IndexOutOfBoundsException: index is out of range 0..-1 (index = 0) at C:/workspace/sts/mobillonline/grails-app/views/product/list.gsp:7
org.codehaus.groovy.grails.web.taglib.exceptions.GrailsTagException: Error executing tag : java.lang.IndexOutOfBoundsException: index is out of range 0..-1 (index = 0) at C:/workspace/sts/mobillonline/grails-app/views/product/list.gsp:7
at C__workspace_sts_mobillonline_grails_app_views_product_list_gsp$_run_closure1.doCall(C__workspace_sts_mobillonline_grails_app_views_product_list_gsp:24)
at C__workspace_sts_mobillonline_grails_app_views_product_list_gsp$_run_closure1.doCall(C__workspace_sts_mobillonline_grails_app_views_product_list_gsp)
at C__workspace_sts_mobillonline_grails_app_views_product_list_gsp.run(C__workspace_sts_mobillonline_grails_app_views_product_list_gsp:34)
at org.zkoss.zkgrails.ZKGrailsPageFilter.obtainContent(ZKGrailsPageFilter.java:201)
at org.zkoss.zkgrails.ZKGrailsPageFilter.doFilter(ZKGrailsPageFilter.java:140)
at java.lang.Thread.run(Thread.java:595)
Caused by: org.codehaus.groovy.runtime.InvokerInvocationException: java.lang.IndexOutOfBoundsException: index is out of range 0..-1 (index = 0)
… 6 more
Caused by: java.lang.IndexOutOfBoundsException: index is out of range 0..-1 (index = 0)
at org.zkoss.zkgrails.ZulResponse.(ZulResponse.groovy:42)
at ZkTagLib.cacheZul(ZkTagLib.groovy:70)
at ZkTagLib.this$2$cacheZul(ZkTagLib.groovy)
at ZkTagLib$_closure1.doCall(ZkTagLib.groovy:9)
… 6 more

By: André

André — Fri, 05 Feb 2010 19:10:50 +0000

Any chances to update the code using zkgrails 1.0-M2?

By: Felipe Cypriano

Felipe Cypriano — Wed, 13 Jan 2010 14:36:06 +0000

Found it. The BookListComposer was throwing a NPE. Check the new code on GitHub repository.

Thanks Matteo for pointing me this error.

By: Matteo

Matteo — Wed, 13 Jan 2010 14:23:15 +0000

thank you very much

By: Felipe Cypriano

Felipe Cypriano — Wed, 13 Jan 2010 14:21:41 +0000

I was able to reproduce this error, I’m checking the cause.

By: Matteo

Matteo — Wed, 13 Jan 2010 14:14:31 +0000

Just tried with groovy 1.6, same error

By: Felipe Cypriano

Felipe Cypriano — Wed, 13 Jan 2010 14:12:39 +0000

This is strange. The only difference I see between our environment is the groovy version, I do not have a standalone groovy installation. I’m using only the groovy that is bundled with Grails, which I think is 1.6.

By: Matteo

Matteo — Wed, 13 Jan 2010 13:49:05 +0000

Hi,
I just tried your code but I got the same error (printed by line 42 @ zkgrails/src/groovy/org/zkoss/zkgrails/ZulResponder.groovy).
I was using grails 1.2.0 and zkgrails-1.0M1, but I tried also with grails 1.1.2 and zkgrails 0.7.6, same error…

Maybe it’s something wrong in my environment (groovy 1.7.0, JVM: 1.6.0_17, Mac Snow Leopard), I’ll investigate more.
Thank you for your quick reply
Regards

By: Felipe Cypriano

Felipe Cypriano — Wed, 13 Jan 2010 12:32:39 +0000

Hello Matteo,

I never seen these messages before. But I’ve just pushed the code I used to made this post to a github repository and you can access it here: http://github.com/fmcypriano/embedding-zul-gsp

Compare your code with mine. If you find any bugs please don’t hesitate to tell me.

Regards

By: Matteo

Matteo — Wed, 13 Jan 2010 11:26:10 +0000

Hi,
I’ve tried your example but gsp pages renders

regexp (?m)(?s)(?i)\A.*\Q

instead of the zk head and

regexp (?m)(?s)(?i)\Q
.* not found

instead of the zk body…

I’m new to grails but I’m pretty sure my code is correct
Any suggestion?

Thanks
bye

By: Felipe Cypriano

Felipe Cypriano — Mon, 04 Jan 2010 10:11:06 +0000

@Simon, Grails and ZK are different kinds of frameworks that can complement each other. While ZK is a GUI framework Grails is a full stack one and one part of it is responsible for the GUI which is the GSP technology. I’m using both together because I can easily integrate the facilities of grails/groovy with ZK, and ZK have a lot of great built-in components. So with both frameworks my code is easier and richer.

By: Simon Massey

Simon Massey — Mon, 04 Jan 2010 04:31:20 +0000

Hi All,

I am just wondering if people are yet mixing Grails and ZK into the same production applications and if so then why?

rgds

By: Felipe Cypriano

Felipe Cypriano — Wed, 30 Dec 2009 10:05:57 +0000

I was having issues with binder yesterday, on another code, and my solution was don’t call it on afterCompose phase. So, to fix your problem you could use some groovy magic and change the code to:

binder?.loadAll()

In afterCompose phase the binder won’t be called, but in the other events, like onClick it will. And it’s necessary to updated the listbox with the new data from the model.

Regards

By: André

André — Wed, 30 Dec 2009 00:47:48 +0000

Thanks Felipe for answering… it works! But now there`s a new exception:

Exception Message: Cannot invoke method loadAll() on null object
Caused by: java.lang.NullPointerException: Cannot invoke method loadAll() on null object
Class: BookListComposer

If I comment the line “binder.loadAll()” in BookListComposer the application works, but I guess this line has it importance…

Andre

By: Felipe Cypriano

Felipe Cypriano — Mon, 28 Dec 2009 18:53:02 +0000

If want to know more about ZK’s native namespace read this article: http://www.zkoss.org/doc/devguide/ch07s17s02.html

By: Felipe Cypriano

Felipe Cypriano — Mon, 28 Dec 2009 10:28:22 +0000

Hello André,

I try to make the sample codes as simple as possible and in this case I’ve removed the namespace “n” from the xml. Try to update your zul file with this:

Best regards