Research And Practice, Based On J2ee Architecture, Web Application Performance Optimization

With the rapid development of Internet,technology of WEB application has become more mature.In particular,J2EE technology proposed by SUN have been applied in the conformation of more and more enterprise application system.The discussion about JAVA performance has never been stopped since JAVA was Born.But JAVA has also been made with a lot of progress, and become more maturely.Besides, with the development of enterprise information, more and more requests about application system are raised.J2EE(Java 2 Enterprise Edition) is anenvironment for development and deploying enterprise applications.The J2EE platform consists of J2EE components,services,Application Programming Interfaces and protocols that provide the functionality far developing multi-tiered and distributed Web based applications.J2EE has become the best choice of the enterprise application development.In exploiture field of WEB JAVA application is 65 percent,and in C/S field JAVA application is 11.7 percent.So that, we can see JAVA in WEB application field is more than half of all.But due to the complexity and diversity of the J2EE technology, the technicians often did not know how to apply and assemble technology.If the technicians applied technology wrong,even it achieve the business logic,it will probably lead many vices including low performance,low scalability,close coupling,and low software duplication. So how to assemble the J2EE technology reasonable and achieve a system with high performance and high expansibility is my researchful emphasis in the thesis.This discourse firstly introduces some correlative technical theory of performance optimize of WEB system,including the design mode of exploring software,the index of how to scale the performance of WEB system.And then it introduces some core technology of J2EE which is correlative closely with the performance optimize,such as Servlet,JSP,JavaBean and some correlative way of performance optimize.In addition, this article has especially studied data base function optimization.Based on above-mentioned current actuality,The main thesis contains four important aspects.The first one is to establishes WEB application system development solution based on J2EE and the pattern of MVC.The Second aspect is to analyzes the J2EE application system the performance question,and proposes influence system performance several primary factors.The third aspect is to Bringing forword the solution strategy according to the primary factor of influencing the system performance,for example demonstration layer,controller layer,operation logic layer,and so on database.Finally, it also proves them through the factual project.