The Model And Reslization Of Project Management System To Simulator's Development Based On Java Ee

With the development of computer network technology, information technology and the changes that manufacturing enterprises fa ce in the market environment, the traditional project management model cannot adapt to today's social development and needs. Therefore, to build a distributed project management system which supports distribution and is based on dynamic association has become a universal demand for modern enterprises.This dissertation designs and develops a project management system of simulator development " so that the project managers can make project planning, decompose and plan project tasks by making use of this system flexibly and reasonably, while the project performer can carry out the tasks quickly and easily according to the project plan and work with other project participants, moreover, they can fill in the system with the execution progress to monitor project progress and quality, as well as coordinate and distribute related resources, so as to achieve efficient and successful networking manufacture.The dissertation first introduces the research background and significance of the subject; followed by the description of relevant theory and development techniques, then makes a systematic needs'analysis and general design, and on this basis puts forward a Java EE-based model of distributed project management system at last makes a description of main modules'functions in the system.The focus of this dissertation is that it designs a multi-layer system architecture which combines the presentation layer framework with a variety of Java EE design patterns. The presentation layer adopts the JSF framework which is on the basis of MVC design pattern to realize the separation of presentation logic and business logic; the business layer adopts the business agent, session facade and server positioning mode to build a solid infrastructure for business logic and reduce the coupling of the system as well as improve the performance of the system; data persistence layer adopts the model of value object and data access object, to separate the business logic and data access logic and hide the logic relationship of the underlying data entities. This dissertation also makes a thorough research on the key technology: the algorithm for "Member Selection" of Web-based Manufacturing Alliance. With the comparison of various methods, the dissertation chooses AHP (AHP) to achieve it at last, and verifies it by practical examples.