Migration to ZK8

answered 2016-03-30 09:28:25 +0800

WilliamB
1609 ● 1 ● 6

Ok the time has come to really migrate my application to ZK8. What I did before was just a quick test.

Is there still no official page about the migration from 7 to 8 ???

answered 2015-10-27 15:43:55 +0800

WilliamB
1609 ● 1 ● 6

updated 2015-10-28 10:27:51 +0800

Ok so here is my way through migrating ZK 7 => 8 I'll split it through several message, hoping it helps other.

MESSAGE 1 :

1°) Compilation issue with SimpleForm removal. => http://blog.zkoss.org/index.php/2015/02/03/zk8-new-form-binding-approach/

2°) Launching Tomcat : Ok Loading my main page in my browser :

org.zkoss.xel.XelException: Resource not found: http://www.zkoss.org/dsp/web/core

I'm referencing the core taglib in my page

<?taglib uri="http://www.zkoss.org/dsp/web/core" prefix="c"?>

I then find another thread about that issue : http://forum.zkoss.org/question/98991/orgzkossxelxelexception-resource-not-found-httpwwwzkossorgdspwebcore/

But no clear answer, since I'm using zkspring I try to update to 3.2.0 as one comment suggest : http://tracker.zkoss.org/browse/ZKSPRING-49

Now when I launch Tomcat :

org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from class path resource [octaveWebContext.xml]; nested exception is java.lang.NoSuchMethodError: org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.getEnvironment()Lorg/springframework/core/env/Environment;

Also with the 3.2.0 I'm getting "duplicate" dependency for Spring beans etc ... With the 3.1, I only had the spring-beans-4.1.5.Release (which is the spring version I specify in my pom.xml). With 3.2.0 I get a shitload of spring.jar added like this:

org.springframework.binding-2.2.1.RELEASE.jar
com.springsource.org.apache.commons.logging-1.1.1.jar
org.springframework.beans-3.0.4.RELEASE.jar
org.springframework.core-3.0.4.RELEASE.jar
org.springframework.context-3.0.4.RELEASE.jar
etc...

Once i excluded all those that were duplicate of my own spring dependency the server started fine.

answered 2015-10-28 10:27:06 +0800

WilliamB
1609 ● 1 ● 6

updated 2015-10-28 16:29:39 +0800

MESSAGE 2 :

The application launch, alleluia!

Going to another page I get hit by this error

org.zkoss.zk.ui.UiException: Not allowed to set vflex and height at the same time except vflex="min"

No indication of the zul line or the component type incriminated.

So onward with a breakpoint at the line 450 of HtmlBasedComponent to see which component throws the error. And I start the correctiong the zul.

=> Btw I've no clue why someone put both in the same tag though, so this new exception is welcome imo.

Next issue the autocomplete combobox. Something fishy has changed and the selected element stays in the model even when you change the value in the box, thus autoselecting it again while you are editing the value typed in the field ...

answered 2015-10-30 15:44:06 +0800

WilliamB
1609 ● 1 ● 6

Next one is when I've a proxified bean with a java.util.Date field in a Date Picker it breaks :

Cannot create a proxy object:[class java.sql.Date], an empty constructor is needed.

So seems ZK tries to proxify on the wrong Type of Date.