The Application Of J2EE Multilayer Architecture To Petroleum Drilling ERP

The thesis introduces the architecture of the Web application system based on J2EE four-tier structure and component technology, and discusses the system analysis, design and key-technology for petroleum drilling ERP in detail.Utilizing the modeling technique, the system analysis and design are better in optimizing and rationalizing. According to its function the system is divided into fourteen sub-systems which are Production Management, Fare Budget Management, Technology Management, Official Resource Management, Material Management, Cost Management, Equipment Management, Customer Relationship Management, Human Resource Management, Architecture Security Management, Item Management, Bid Decision-making Management, System Management, and High information Search. The system combines management with resources plan, each module function is relatively independent, and the whole system has a close relationship.The system employs four-tier structure based on J2EE. Browser provides visual graphic interface; Web Server responds to the requests of the clients; Application Server processes application, computation and data operation; DB Server stores and administrates information.In the system, the design of general abstract mode, the web graphics design, works flow design the etc., the key techniques are all in concrete engineering realm to have higher applied value. In general mode abstract design adoption the OO technique, for example seal to pack, construct, inherit, and interface technique. The web graphics applied procedure, to carry on the reformation and seal to pack in the design, build up the business enterprise application procedure at the client effectively and quickly. The design that work flow solves the difficult problem to crack that the business process can make to order to turn. These techniques resolved the problem of the drilling ERP system, raising the development efficiency of the system.The implementation of multi-tier structure enables the system to have distinguished quality of flexibility, universality and compatibility. Each layer can be absorbed in the particular role and functions.