Design And Implementation Of Java Ee Web Framework For Erp System

Java EE Web framework can be used to effectively to conceal the details of platform development,and provide a good structure for application system.The success using framework in large-scale application can reduce the complexity of system development.The popular frameworks solve some common problems in the process of application system development,but be lack of supporting ERP system characteristics.Java EE Web Framework for ERP system(JEEE) is based on the systematic research into ERP theory and the integration with the advantage of open source framework.It is a Java EE Web Framework that designed and developed to fit the ERP system features in high degree.The key works researched and implemented by the author are as follows:(1) Researching the characteristics of ERP,separating the system functions into four layers as View,Controller,Model,Persistent,by using the hierarchical designing theory,designing and implementing the overall technological structure of JEEE;(2) Referring to the thinking of SOA,separating ERP system business function into component,using Service component and component integration technology to support Agile Development of ERP system;(3) Integrating Ajax technology into JSP customer tag,designing and implementing the JSP custom tag library that fits the ERP system features in high degree,encapsulating reusable code to achieve the separation between display and code in view layer;(4) Achieving the "rich client" in B/S structure by using Ajax technology, transferring part of the control logic from server-side to the client-side,using client computing resources to reduce the load on the server side;(5) Using client-side encryption technology to ensure the security of enterprise sensitive data,while transferring on public channel;(6) Using server-side security check technology to increase the ERP system security that caused by attacks from Internet;(7) Implementing the data object buffer(DOB) technology to improve data accessing performance of ERP system by decreasing the frequency of direct access database in ERP system;(8) Proposing the DOB memory control rules and buffer optimization algorithm to make the goal of "low memory usage,high hits" come true,at the same time to further improve the data read speed of DOB.The target of the author is to design and develop a proto ERP system,which meet the demands of Procurement,production,sales and management made by Shanghai Jingyou Cable Company.This article mainly describes the designing and implementing process of CRM subsystem.