Research On J2EE Enterprise Portal Website Development Technology

With more and more aggressive market competition, enterprises should use any method to increase their reputation and save the cost of management. Building an enterprise portal website is a butter-and-bread method for the company to increase clients, provide various information services for clients, and build up the reputation of the company.With some wonderful features, such as open standards, portability, high productivity, multi-tier, distribution, etc, J2EE becomes the most popular technology for developing portal applications.Although J2EE is mature and used widely, there are still some challenges to face when developing J2EE applications:ln developing J2EE, there are few articles to discuss and guideline the exception handling, and for recent manage exception strategies, there still are some aspect to improve. For example, there are a few strategies of exception hierarchy used by development teams. E.g. Single Exception Model, Tree Exception Model, and a trade-off model of these two models. They all have pros and cons and are not so perfect.End-user experience is everything today. Poor application performance degrades end-user experience. But recently, many J2EE applications are complained for their performance problem, especially when their business logics are very complicated. On the one hand, Java language is related slower than C and C++. On the other hand, the J2EE technology are misused in some place can result in performance issue, like not using connection pool when get database connection, and not close connection when finish the database operation. So the J2EE performance tuning technologies and tips are required.In this thesis, we are going to introduce the basic principles that should be cared in J2EE Portal developing, design a new mechanism of J2EE exception handling, including logging, message, and exception chains etc, and we will also introduce some performance tuning technologies on J2EE developing. Finally, we are going to implement the new exception handling mechanism and performance tuning technologies on the MYPORTAL project of Sky Lane Company.