The Design And Refactor Of A Portal Message System

The biggest difference between software and other products are the continuous change in its whole life cycle. Changes come from many aspects: new requirement, new technology and bug fix etc. With the introduction of changes, the structure of the software will be inevitable departure from the original intention of the design, makes it hard to do the follow-up changes and maintain.Refactor can avoid this problem largely, improving software quality and performance by adjusting the code, and make the software design and architecture more reasonable, improve the scalability and software maintenance.In the actual process of software development, due to various conditions, the importance of refactor is often ignored. In this paper, it takes a message release system of a large enterprise portal as example, expresses how to maintain the vitality of the software in development and maintain process.The background of Alert Center is that there is lots of information in the portal site which needs to be sent on time in a low price way, let users know the status of different services on time.With the development of J2EE platform, new technologies such as rich client, lightweight containers and framework emerge, promoting the progress of the entire J2EE community continuously. In this paper, these new trends and new technologies applied to the refactor and redesign process of Alert Center.