| At present, more and more users choose to use J2EE to build up enterprise-class application. This is because J2EE is a kind of standard system structure definiens based on Java. It is a kind of industrial standards of enterprise-class application development of Java technology, overcomes the drawbacks of traditional client/server mode, and has suited for Browser/Server framework. It has provided a platform-independent, portable, multi-user, secure and standard enterprise-class platform for development of the server using Java. Thus, it simplifies the development, management and deployment for enterprise-class application.Today, the information-based construction of national public security traffic management develops rapidly. The existing traffic police information system has not satisfied the request for the increase in business development and data quantity day by day. It is particularly necessary to build a Public Security Traffic-Police Information Application System based on J2EE/EJB Technology, which is used for deep development and full utility of the public security information resources.In this article, the system design and the code compilation (including systematic framework design, data structural design,application model design, business function design) of the public security traffic-police information application system (violation management subsystem) have been completed. They base on the detailed analysis and research of system structure of J2EE and EJB technical specification. The deep research and analysis of the application in this system of EJB technology have been made. The development details for implementing the EJB application (including use of the session beans, entity beans and message-driven beans) have emphatically been described. The article also discusses how to use transactions, and choose the best persistence technology (including how to make the best choice between session beans and entity beans or between BMP and CMP).
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