Study On CAD/CAE Information Integration System Based On J2EE For Bodywork

Since the J2EE(Java 2 Platform, Enterprise Edition) technology was released by Sun Microsystems Inc in 1997, it has achieved a great number of success by reason of its advantage of high efficiency, scalability, stabilization, heterogeneity and well legacy integration in the process of development. J2EE has deserved into a technological mainstream in the software development field presently. However, problems came up gradually when some J2EE-based projects run into operation: the system structure is complicated, hard to maintain, difficult to test, etc. These problems are mostly ascribed to the complexity of J2EE itself. This dissertation tries to adopt some relatively simpler methods to alternate the traditional heavy-weighted J2EE, reduce the complexity, and implement the prototype to a Web-based information integration system of the automobile bodywork design. Grounded on J2EE specification, widely used new technologies such as Struts, Spring and Hibernate, etc. is alse employed to substitute traditional J2EE in this subject. Utilize Struts framework as the overall framework of the system, its function includes page logic handling, dataflow control etc.; Utilize Spring framework as the container service component of the system, its function includes directory service, transaction service etc.; Utilize Hibernate technology as the data access layer of the system, its function includes object/relation mapping, realizing data operation, shielding database difference, etc.. This dissertation studies the information integration of automobile bodywork design based on J2EE. By using Struts, Hibernate, Spring technologies, a distributed design information management system is built up to realize CAD/CAE information integration after the systematically analyse and design based on J2EE. The groundwork are as the follows: Firstly introduce the basic conception of the cooperative products developing platform as well as its develop process and future trend; Secondly expatiate the related technologies of J2EE, induding the deficiency of the traditional J2EE and the substitute technologies; Thirdly discuss the desigh scheme of the bodywork design information integration system, then the five-tier system structure is proposed, and the solutions to some key problems of the system by using the new lightweight J2EE technologies. Finally the Web-based five-tier application system prototype was built.