The Research And Application Of Lightweight Framework In J2EE

While the J2EE is widely employed in applications, there are a lot of questions on EJB. The EJB technology brings a lot of complexities and enormous expenses to the J2EE applications.Reduce the complexity of J2EE development has become the main concern.With the emergence of lightweight framework, developers have begun to spread using lightweight framework in J2EE application.This framework can significantly reduce the complexity of J2EE application and improve the productive -ity of software development. This paper puts forward and resolves the following issues: 1. The method of reducing the complexity of the J2EE application.Be inclined to choose the non-distributed system architecture , try to avoid using EJB and use lightweight framework to substitute for EJB technology in J2EE Application.2. This paper mainly comparative analyses the advantages and disadvantages of lightwe -ight container by contrast with EJB in transcation management, persistence, thread management. remote invocation and container management and so on. It also analyses the application areas of lightweight container and EJB. Lightweight can better organize code and use enterprise-level services.3.Focusing on the research of how to use Spring framework to replace EJB in transcation management, thread management, remote invocation, persistence and so on. Lightweight containers start fast, light.The container can manage any size of the object. Lightweight framework uses inversion of control to resolve the assembly of componet object,so developers can concentrate on business logic. Based on object-oriented progra -mming, Lightweight can provide enterprise-level services and to achieve realization of non-intrusive, flexibility and scalability.4. It analyses the advantages and disadvantages of various J2EE framework.Discusses the method of how to choose J2EE framework according to the specific needs of the application and the integration of J2EE framework .This paper briefly introduces the specific case of J2EE application based on Spring framework: Golf Data Services System.This system uses AspectJ to provide enterprise-level services.Business logic layer using the Spring framework to process and data access layer using Hibernate O/R mapping program.