摘要：In the recent years, more and more corporations are devoted to developing mobile applications integrated with legacy systems in pace with rapid development of mobile devices. Mobile applications can attract potential customers to increase the competitiveness of corporations and promote working efficiency for employers. However, it is difficult to develop mobile applications integrated with legacy systems because of many heterogeneous systems and diverse mobile platforms. Moreover, the cost of developing and maintaining such systems is very high. Thus, applying mobile middleware can facilitate in resolving most of the problems. The main objective is to build a communication bridge between the legacy systems and diverse mobile platforms and to setup the common communication protocols and data formats for different mobile platforms. In our research, to facilitate the extension of modules used for integrating with the legacy systems, the Plugin design pattern has been applied to mobile middleware and further implemented many common modules for various functions. The developers are able to create the Plugin components needed for the existing mobile systems rapidly. Finally, we apply the framework to develop FCU mobile middleware in order to assist the university develop mobile services that can be integrated with the legacy systems and promote current mobile application development extensibility.
