Now that Apache Wicket 1.4 is available, migrating from previous versions is pretty straight forward.
Change the version in your POM file as:
| <wicket.version>1.4.0</wicket.version> |
And that’s it!
The complete dependency may look like:
| <dependency> <groupId>org.apache.wicket</groupId> <artifactId>wicket</artifactId> <version>1.4.0</version> </dependency> |
or
| <dependency> <groupId>org.apache.wicket</groupId> <artifactId>wicket</artifactId> <version>${wicket.version}</version> </dependency> |
You may encounter the following error:
| 2009-08-05 05:58:49.387::INFO: No Transaction manager found – if your webapp requires one, please configure one. ERROR – DiskPageStore – Couldn’t load DiskPageStore index from file /Users/arungupta/workspaces/runner~subversion/wicket/runner/target/work/wicket.runner-filestore/DiskPageStoreIndex. java.lang.ClassNotFoundException: org.apache.wicket.util.concurrent.ConcurrentHashMap at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:319) |
At least I did 
Fortunately the fix is simple and intuitive. Instead of running “mvn jetty:run”, invoke the command:
| mvn clean jetty:run |
Basically, “clean” will clean out references to older version of Wicket jars in your project and voila!
If you are deploying as WAR file, then bundle Wicket jars in WEB-INF/lib instead of copying them to the shared folder of your application server.
Other Wicket tips on this blog are available here. Specifically TOTD #86 shows how to get started with Apache Wicket on GlassFish.
Please leave suggestions on other TOTD (Tip Of The Day) that you’d like to see. A complete archive of all the tips is available here.
Technorati: wicket glassfish migration
- TOTD# 86: Getting Started with Apache Wicket on GlassFish
- TOTD #91: Applying Java EE 6 “web-fragment.xml” to Apache Wicket – Deploy on GlassFish v3
- TOTD #89: How to add pagination to an Apache Wicket application
- Track your running miles using Apache Wicket, GlassFish, NetBeans, MySQL, and YUI Charts
- TOTD #84: Using Apache + mod_proxy_balancer to load balance Ruby-on-Rails running on GlassFish
