Research Of Web Services Based On Message Middleware

As a kind of technology capable of quickly integrating applications, Web Services has represented itself as the latest tide with wide potential prospect in distributed compute field. Presently those applications are all confined in the simple business coming from the synchronous message acquirement. However it is not good for those sophisticated business which need the asynchronous message transmission and high reliability. So it embarrasses WS competition on the large-scale and key applications domain. With Web Services application scope expanding and further researching, the flexible message transmission and reliable quality of service have collected many attentions from lots of investigators. However there are not existing uniform standards and specifications defining what message transmission and reliability are under the specific Web Services context. This thesis bases on that enterprise applications necessarily need asynchronous and reliable messaging mechanism when adopting Web Service technology. The primary contributions of this thesis include the following three parts. Firstly, we analyze Web Services message mechanism and the reliable message support from the mature Message Oriented Middleware. Secondly, after analyzing the traditional Web Services'disadvantages, we study and explore the ways of using MOM to implement asynchronous reliable Web Services by combining them. Last, on the basis of our study, we design and implement a Web Service-Oriented application Class Library named SOAP2MSMQ.It supports a WSE Messaging Custom Transport over MSMQ resource for transporting the SoapEnvelope and implements asynchronous reliable Web Services in the network layer. It fulfills a very flexible asynchronous message transmission and high reliability for the business applications by combining MOM and Web Services. The exploration to the asynchronism and reliability of WS has the significant practice meaning for improving the performance ,quality of service of WS and expanding the scope of WS applications.