Research And Application Of Web Service Asynchronous Polling Method With Revised Value β

Web Services takes 'Software is for service' as its perfect target and causes deep reformations in system architecture and software development fields, thus it is becoming the core component of new generation open distributed systems. The main goal of Web Services is to build a common technology level independent of platforms and languages. By the applications on different platforms, such technology level is relied on to implement their connection and integration. The Web Services mode has synchronous and asynchronous method according to the way by which the client uses to realize the calls. The asynchronous method is more popular as it can improve usage circumstances of the client system. Generally, the asynchronous method can be implemented by polling or call-back way. Because of the network security, not every client can provide the call-back interface, as the result, polling is the only available way for such client end.Typical asynchronous web services polling interface can be accomplished via accessing the network periodically, which makes the networks much busier and can't forecast the next response time from existing data. Thus, Web Service Asynchronous Polling Method with Revised Value β is brought forward in the thesis. And the method is proved to be effective to reduce the polling times to network by taking many test cases. Further more, Web Service Asynchronous Polling Method with Revised Value β is used in Project Cooperation Management System to make the system can be used based on web services.The content of the thesis can be described as following:Firstly, the thesis introduces Web Services, the polling and call-back interface in asynchronous method, the importance of asynchronous method and the necessity of the polling interface in asynchronous method. Then the implement of typical asynchronous web services polling interface, the design and implement of Web Service Asynchronous Polling Method with Revised Value β are showed here and the test data are simply analyzed. After then, it is introduced that the application of Web Service Asynchronous Polling Method with Revised Value β in Project Cooperation Management System in order to achieve the connection of the client and Web services that span different platforms. And lastly, the application idea of both polling and call-back interfaces used in one web services system is brought forward.