Platform Based On. Net Xml Web Services Research And Implementation

What the Web did for program-to-user interactions, Web Services are poised to do for program-to-program interactions. Web Services allow companies to reduce the cost of doing e-business, to deploy solutions faster and to open up new opportunities.The key to reaching this new horizon is a common program-to-program communications model, built on existing and emerging standards such as HTTP,Extensible Markup Language (XML), Simple Object Access Protoco (SOAP), Web Services Description Language (WSDL) and Universal Description,Discovery and Integration (UDDI).Web Services allow applications to be integrated more rapidly, easily and less expensively than ever before. Integration occurs at a higher level in the protocol stack, based on messages centered more on service semantics and less on network protocol semantics, thus enabling loose integration of business functions. These characteristics are ideal for connecting business functions across the Web both between enterprises and within enterprises. They provide a unifying programming model so that application integration inside and outside the enterprise can be done with a common approach, leveraging a common infrastructure. The integration and application of Web Services can be done in an incremental manner,using existing languages and platforms and by adopting existing legacy applications.The article summarize the current situation of Web Services development at first, analyse more existing problems of Web Services.Based on the trend which Microsoft.Net has being brought out,advocated and the demand that more and more company and enterprise gave out increasingly day by day, the author put forward the opinion that only by alteration of the orthodox and heave cost integration mode,the expeditiousness and unfixed coupling system integration can be realized.By using the core and important products such as Windows 2003, Visual Studio.Net and SQL Server 2000, the compositive Web system has been exploited and demonstrated using Web Services from part to whole,that is the System of online purchasing book. Researched into the technology of Web Services, finished some processes of the module of Web Services of the books' managing and selling and the customer's managing,such as design,realize,test,discover,applite. Discussed XML technology, and the realizing fundamentals as well as methods which utilized it to deliver datum in different areas and construction. Analyzed the advantage of .NET platform, and made use of the technology of ADO.NET and ASP.NET to realize the development of the whole system .