Study And Development Of Distributed Collaborative Work Directing System In City Management Based On SOA

Nowadays, we encounter some problems in the procedure of e-government's application, such as isolated information islands, heterogeneous, bad interoperability, poor expansibility and so on.City Management Directing System (CMDS) is one kind of special e-government system, civic department, borough department and collaborative linkage departments all have their own directing systems, these systems' communication have problems such as variance of interface criterion and abhorrent data. Therefore, the collaborative work efficiency between systems is very low, we need to develope a collaborative work platform which is oriented distributed environment and fits for multi directing centers.Based on the project about Guangzhou City Construction Management Monitoring Directing System which is been took charge of by Guangdong CMS Emphases Laboratory, this paper sums up the application actuality of Guangzhou City Management Informationization and the construction aim of CMDS, analyses the work characters of CMDS, and puts forward a new system structure of Distributed Collaborative Work Directing System in City Management Based on SOA.This paper's author study carefully and make comparative analysis of a variety of distributed computing model, explore relevant cutting-edge technology, so to determine the technical line and research methods on this paper; and then study theories deeply about SOA, such as SOA principle, basic characters, reference model, design principle and so on; study ESB arrangement mode and distributed computing mode—XML Web Services,master XML language and SOAP protocol deeply; study the characteristics of each collaborative work model and their application fields; analyse distributed collaborative work directing system's operation flow, find pivotal service, define service interface, construct service model, then optimize operation flow and build a collaborative work model oriented distributed environment by adopting methods of SOA design principle and methods;use Web Services technology to programming web services based on C# and XML language , create and encapsulate service component, build Private UDDI Register Center which can administer upon services query and publish, binding and call web services by SOAP protocol, consequently build a Web Services Layer;use SOA and component-based technologies to construct application systems,mainly developed several business handling systems,such as "Incept Case System", "Handle Case System" and "Control & Supervise System"; then use some technologies under collaborative mechanism, such as communication protocol and data synchronous,to construct a collaborative work platform based on SOA.,so to realize data transformation and reciprocation between inner application systems,outer directing systems and Web Services Layer.After two years' development by the author's laboratory, Guangzhou City Construction Management Monitoring Directing System has been running now. The architecture of Monitoring Directing System based on SOA fit for the demands of Guang Zhou City Management mechanism, implement higher efficiency distributed emergency directing and collaborative linkage work, establish steady foundation for subsequent development of City Emergency Directing System...