Patrick Cox
Dec 31 2010
Highlevel Spring Portlet MVC Overview
I have received some general Spring MVC questions regarding my Integrating Spring into your Weblogic Portal post. So in this post I will briefly describe a simple Spring Portlet MVC example along with some of the important annotations that can be used when developing Spring Controllers with version 2.5 or greater.
May 19 2010
Integrating Spring into your Weblogic Portal
Switching out your Weblogic Page Flow Controllers in favor of Spring Controllers is easier than you might think. Here are just a few steps to help the integration.
Dependencies
The latest production release version of Spring is version 3.0.2. In this version they have broken the release into about 20 different jar files. The libraries listed below are those that you will need to include in the WEB-INF/lib your project:
Jul 14 2009
easy spreadsheet processing with JExcel
On a recent project we had the need to process Microsoft Excel spreadsheets. We chose to use an API, called JExcel, to read, write, and process Excel files. This post will focus on reading and processing an Excel spreadsheet.
To start you'll need to create a Workbook, which can be done by reading from a File or InputStream. Next, get each Sheet to process by calling .getSheets(). Need to be sure to close the workbook to free up resources by calling .close() once processing is complete.
Once you have a Sheet you can get each Row, which will be an Array of Cells and then get the contents of each Cell as a String. The API also gives you the ability to get a cell's value of a particular type (i.e. Number, Date, etc.). See the API documentation for examples.
*** Note - One downfall of the current version (2.6.10) is that it cannot read Microsoft 2007 Excel file version (.xlsx). Hopefully the next release will address this issue.
To start you'll need to create a Workbook, which can be done by reading from a File or InputStream. Next, get each Sheet to process by calling .getSheets(). Need to be sure to close the workbook to free up resources by calling .close() once processing is complete.
Once you have a Sheet you can get each Row, which will be an Array of Cells and then get the contents of each Cell as a String. The API also gives you the ability to get a cell's value of a particular type (i.e. Number, Date, etc.). See the API documentation for examples.
*** Note - One downfall of the current version (2.6.10) is that it cannot read Microsoft 2007 Excel file version (.xlsx). Hopefully the next release will address this issue.
Feb 10 2009
jboss portal redirect
The purpose of this post is to describe how you can redirect a user to a specific landing page within a JBoss Portal application. The jboss-service.xml file in your JBOSS_HOME/server/default/deploy/jboss-portal.sar/META-INF directory contains the managed bean definitions and registration of the beans that are used. There is one entry that is of importance to accomplish the redirect, which is the DeafultPortalCommandFactory. This factory is called when every request for your portal is made. Its main objective is to check what the next command is, and if it does not have one, it will render/return the default portal page in your -object.xml.
To change this behavior you can extend the org.jboss.portal.core.model.portal.DeafultPortalCommandFactory class and override the doMapping() method to invoke the desired redirect (which can be a redirect to another portlet other than the default or an entirely different portal). You may want to stick a flag in the session to notate that the session has been redirected to avoid a redirect loop. Below is the doMapping() method of com.demo.NewDefaultPortalCommandFactory.java:
Then just package your new class as a JBoss component (.sar file) and register it within the jboss-service.xml. Your new JBoss component will have a packaging structure similar to the one below.
new-portal.sar/
com.demo.NewDefaultPortalCommandFactory
META-INF/
jboss-service.xml
You will need to define your new DefaultPortalCommandFactory within the jboss-service.xml inside your portal.sar.
Finally, you simply need to comment out (or modify) the registration of the DefaultPortal and add an entry your new Command Factory in the jboss-service.xml file in the jboss-portal.sar/META-INF.
new-portal.sar/
com.demo.NewDefaultPortalCommandFactory
META-INF/
jboss-service.xml
You will need to define your new DefaultPortalCommandFactory within the jboss-service.xml inside your portal.sar.
Finally, you simply need to comment out (or modify) the registration of the DefaultPortal and add an entry your new Command Factory in the jboss-service.xml file in the jboss-portal.sar/META-INF.
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