Design and implementation of web service engine in web application server

Web service is the basis of program-to-program interoperation and provides a consistent programming model independent of programming languages. Applications are integrated in a uniform way. The key requirements of web service implemented in web application server is analyzed and the design and implementation of SOAP-based web service engine in application server is described. Several important technologies and solutions in implementing web service engine are introduced. The web service engine has been implemented in the OnceAS application server.