Research On Optimizing Web Service Via SOAP Extension

Web service is a measured intergrated application which allow different client to use its service .Web service has been widely received as a distributed process used in many platform and system.SOAP,the basis of Web service transport protocol,plays an important role in the implemenation of Web service. Inspried by SOAP design thought, we tried to utilize available technologies to design a SOAP message transfer frame and then implement key technology in it, in order to optimize Web service.This article mostly focuses on research and application of SOAP. First analyzed SOAP deeply, include SOAP message process framework, expansibility, protocol binding. Then introduced SOAP Extension, The SOAP Extension is a invoking mechanism of the Web service method which can manipulate them before transferring SOAP request and response. The developer can write a code which can be executed when the SOAP message is after serialized and before deserialized.This article extended SOAP in compression and logging at first. then Embedded XML Signature and XML encryption into SOAP ,making use of the expansibility of SOAP, extended SOAP in security aspect; and demonstrate the extends of SOAP in confidentiality, integrality, identification.in the end, designed and implied a stock system prototype which is based on Web service and client of it is a windows form application and applied SOAP security in fund transfer module of this prototype, implied the application of SOAP security.