Research On ERP Framework Based On J2EE

The software architecture is becoming an important research field of software engineering gradually, and has gotten the general approval of the industry as a discipline finally. With the software development approach based on component and architecture, the way of software development has changed radically. Software development was not "algorithm + data structure" again, but "component development+ components compositing based on architecture". The software architecture begins to appear in the courses of software development as development files and intermediate products.Framework is a partly integrated system (subsystem) which need to be instantiated. It defines the architecture of system (subsystem) and provides the basic composition part which make a group of concurrent reusable classes. Framework is always specified to a field. Design pattern is one of the software-reuse technologies, which derives from the conclusions of others" design experiences. Every design pattern is testified to be useful. J2EE design pattern is a product combining J2EE platform with design pattern, which not only has advantages of the design pattern but also is more specific than the general patterns. Through applying the method of Pattern-Oriented Analysis and Design (POAD) , we may rapidly develop a reliable large-scale software application. This paper introduces the concepts of architecture, framework and design pattern and shows their relationships. By utilizing the method of POAD and combining J2EE design pattern, we construct a ERP(Enterprise Resource Planning) System, which has more robustness, expansibility and maintainability. Because each pattern solves different questions and has different interest in these problems and each pattern can not exist independently and has complex relations with other patterns, for J2EE developers, how to select appropriate patterns and combine these patterns efficiently is the emphases of this paper. The paper describes design patterns...