构建大型货代系统的解决方案

在构建大型货运代理系统时,针对所遇到的分公司间存在需求上的差异、权限和并发访问等关键问题,提出一种有效的,可行的解决方案.引入基于Java的规则引擎,解决各分公司需求差异的技术实现问题,把大量的if-else语句从应用程序中分离出来,简化了代码,并增强可读性和可维护性.通过在服务器和客户端两方面的构建,系统可以很好地分配功能访问权限,既保证分公司间角色的多样性,又保证数据的安全性.选用Read Committed隔离级别,并采用对象持久化技术,可解决不可重复读和第二类丢失更新的并发问题.

Solution for Constructing Large-Sized Freight Agent Systems

This paper analyses the key questions on constructing large-sized freight agent systems,which are the different demands among branch companies,concurrency-control problems and authorization-control problems,and then an efficient,feasible resolution is brought forward.Using rule engine based on java,the technology is realized for demand difference from branch companies,and many if-else statements are separated from application program,so codes are simplified,and readability and maintainability is enhanced.Th...