Easy example for Struts2 optiontransferselect

Optiontransferselect  is a Struts2 UI component  which allows to create UI component like shown below:

 This example allows you to select modules from the list given in the left side to right side. The source code of this example available in github in this link https://github.com/knishe/knishe-public (you can simply clone and try the example https://help.github.com/articles/fork-a-repo) with following command it can be clone into to the local machine(you need git installed to perform this command).
 

git clone https://github.com/knishe/knishe-public.git

It been generated and build using Maven and configure with jetty which allows to run the application instantly with one command "mvn install -Dmaven.test.skip=true jetty:run" (for this Maven should be configured) and you can browse to http://localhost:8080/struts-webapp/HelloWorld  to see the UI component in action.


The web application is structure as shown below and newbies do not confuse with complex folder structure because created by maven struts2 archetype. All we need to care  about is these five files.

1. HelloWold.java (Action class)
2. Module (Just Java Bean to hold "moduleId" and "moduleName")
3. struts.xml
4. HelloWorld.jsp
5. Success.jsp (Just to ensure the results)

Create HelloWorld Action class

First create the HelloWorld action class with four lists, two lists to display modules and two lists to hold the left list and right list once submit.

Create Module bean class

Create the Module bean class to hold the "moduleId" and the "moduleName"

Edit the struts.xml

Edit the struts.xml and copy the following code snippet. In this XML I have created two action to direct to load the HelloWorld page with left and right list and another action to invoke a method "registerModule" during the submit and redirect to Success page.

Create HelloWorld.jsp

Create HelloWorld jsp file  with optiontranferselect UI component. You should place the   with in the the head of the jsp or body in-order to select the list contents during the click of submit button 

Create Success.jsp

 Create Success jsp file display the selected left list and right list after the submission.



Wish you all the best.

Configure Subversion with Apache web server on Ubuntu

Its easy to have a private subversion repository that you can access from anywhere, all you need:

1. Subversion
2. Apache Web server
3. Ubuntu (Soon i'll publish for Windows) 

Install Apache server on ubuntu

make sure your Apache server is up and running 

Install subversion on ubuntu

The above command installs subversion but in order to access your subversion via internet you need to configure your subversion with Apache. Subversion provides module to interact with Apache such as libapache2-svn, install the package using the following command:

Subversion configuration

Create a subversion folder to hold all the repositories. 
Once you create the subversion directory open and edit the subversion configuration file located in the "mods-enabled" in the "apache2" located in "etc" with following command.
 
uncomment the following line in the dav_svn.conf file


Once the configuration finished. Create the user craditial to login to the subversion with the following command:



 Restart the Apache server

Create a simple subversion repository project

Once the project is created, change the permission of the project directory to enable the web user to read/write.
Done! Open the subversion repository by click this link  http://localhost/svn/myproject

So far you can access your subversion repository in the local network but you also can make it available to the wide area network with the domestic router and internet connection. I will be posting about it soon as possible.